Relevant bibliographies by topics / STINK model

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Academic literature on the topic 'STINK model'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "STINK model"

1

Cullen, Eileen M., and Frank G. Zalom. "On-Farm Trial Assessing Efficacy of Three Insecticide Classes for Management of Stink Bug and Fruit Damage on Processing Tomatoes." Plant Health Progress 8, no. 1 (January 2007): 23. http://dx.doi.org/10.1094/php-2007-0323-01-rs.

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Five foliar insecticides representing a neonicotinoid (thiamethoxam), a pyrethroid (lambda-cyhalothrin), a neonicotinoid plus pyrethroid (thiamethoxam and lambda-cyhalothrin), and two organophosphates (dimethoate and methamidophos, respectively) were evaluated for relative efficacy in managing consperse stink bug (Euschistus conspersus Uhler) on California processing tomatoes. E. conspersus density and percentage fruit damage were measured at harvest in an on-farm experiment at two locations in 2002, and small plot experiments in 2002 and 2003. Results showed that thiamethoxam plus lambda-cyhalothrin, lambda-cyhalothrin, and methamidophos can provide equivalent control of E. conspersus on processing tomatoes. Relative efficacy of the same treatments was inconsistent when applied before completion of small nymph development as estimated by the E. conspersus phenology model. Results can be utilized by growers with canning contracts that limit total organophosphate active ingredient per season, or in cases where stink bug treatment thresholds are reached within the processor preharvest interval for organophosphates. Insecticide efficacy evaluation is discussed within the context of continued research to provide IPM-compatible insecticide options to growers facing low processor tolerance for stink bug damaged fruit, and organophosphate insecticide restrictions in tomato canning contracts. Accepted for publication 22 November 2006. Published 23 March 2007.
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Xu, Z., and Z. Liao. "Optimization of Suzhou Creek Rehabilitation Project Stage I." Water Science and Technology 52, no. 9 (November 1, 2005): 69–75. http://dx.doi.org/10.2166/wst.2005.0290.

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Suzhou Creek is a seriously polluted tidal river in Shanghai, China. With the development of Shanghai, there is more and more concern over the “blackness and stink” phenomenon of Suzhou Creek. Suzhou Creek Rehabilitation Project was launched in 1998, and the planning investment of the Project Stage I was 8.65 billion yuan (about 1.05 billion US dollars). It is important to predict the effectiveness of the project and to optimize it. In this study, the USEPA's WASP model is employed to establish a water quality model of Suzhou Creek by using data from the Third Trial Low Flow Augmentation on Suzhou Creek in 1999 and other monitoring results. Based on this, Suzhou Creek Rehabilitation Project Stage I is optimized and adjusted, so the actual investment of the Project Stage I is reduced to 6.99 billion yuan. By implementing the Project Stage I, the targets of Stage I have been met, the “blackness and stink” phenomenon of the mainstream was eliminated by the end of 2000, and the ecological system was improved step by step.
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Malek, Robert, Livia Zapponi, Anna Eriksson, Marco Ciolli, Valerio Mazzoni, Gianfranco Anfora, and Clara Tattoni. "Monitoring 2.0: Update on the Halyomorpha halys Invasion of Trentino." ISPRS International Journal of Geo-Information 8, no. 12 (December 10, 2019): 564. http://dx.doi.org/10.3390/ijgi8120564.

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“BugMap” is a citizen science mobile application that provides a platform for amateur and expert scientists to report sightings of two invasive insect pests, the tiger mosquito Aedes albopictus Skuse (Diptera: Culicidae) and the brown marmorated stink bug, Halyomorpha halys Stål (Hemiptera: Pentatomidae). The latter is a notorious pest of fruit trees, vegetables, ornamentals, and row crops, inflicting severe agricultural and ecological disturbances in invaded areas. Our approach consists of coupling traditional monitoring with citizen science to uncover H. halys invasion in Trentino. The project was initiated in 2016 and the first results were reported in 2018. Here, we revisit our initiative four years after its adoption and unravel new information related to the invader dispersal and overwintering capacity. We found that our previous model predicted the current distribution of H. halys in Trentino with an accuracy of 72.5%. A new MaxEnt model was generated by pooling all reports received so far, providing a clearer perspective on areas at risk of stink bug establishment in this north Italian region. The information herein presented is of immediate importance for enhancing monitoring strategies of this pest and for refining its integrated management tactics.
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van Oosten, Roos. "The Dutch Great Stink: The End of the Cesspit Era in the Pre-Industrial Towns of Leiden and Haarlem." European Journal of Archaeology 19, no. 4 (2016): 704–27. http://dx.doi.org/10.1080/14619571.2016.1147677.

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In the nineteenth century, the continuous discharge of sewage from millions of Londoners into the River Thames caused a notorious, unbearable stench during the summer, which reached a climax in 1858 and became known as The Great Stink. In this article it is argued that such a ‘Great Stink’ also occurred in the booming and heavily populated pre-industrial town of Leiden, because cesspits were being replaced by sewers draining directly into canals. Flawed as cesspits may have been, the new, hygienic sewer infrastructure meant the advent of unsanitary conditions normally only associated with the era of the Industrial Revolution. How and why the cesspit was killed off is explained by comparing Leiden with the seventeenth-century boom town of Haarlem, where cesspits remarkably survived the ‘Golden Age’ of the seventeenth century. Using the stakeholder model it becomes clear that the shift in hygienic infrastructure was not the outcome of a single stakeholder calling the shots but was the result of interactions between tenants, housing developers, local government, and textile entrepreneurs (in the case of Leiden), or brewers (in Haarlem).
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PANIZZI, ANTÔNIO RICARDO, JOSÉ ROBERTO POSTALI PARRA, CLÁUDIA HIRT SANTOS, and DIOGO RODRIGUES CARVALHO. "Rearing the southern green stink bug using an artificial dry diet and an artificial plant." Pesquisa Agropecuária Brasileira 35, no. 9 (September 2000): 1709–15. http://dx.doi.org/10.1590/s0100-204x2000000900002.

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Laboratory and greenhouse studies were conducted with an artificial dry diet to rear nymphs, and with an artificial plant as substrate for egg laying by the southern green stink bug, Nezara viridula (L.). The artificial diet was composed of: soybean protein (15 g); potato starch (7.5 g); dextrose (7.5 g); sucrose (2.5 g); cellulose (12.5 g); vitamin mixture (niacinamide 1 g, calcium pantothenate 1 g, thiamine 0.25 g, riboflavin 0.5 g, pyridoxine 0.25 g, folic acid 0.25 g, biotin 0.02 mL, vitamin B12 1 g - added to 1,000 mL of distilled water) (5.0 mL); soybean oil (20 mL); wheat germ (17.9 g); and water (30 mL). Nymphs showed normal feeding behavior when fed on the artificial diet. Nymphal development time was longer than or similar to that of nymphs fed on soybean pods. Total nymphal mortality was low (ca. 30%), both for nymphs reared on the artificial diet, and for nymphs fed on soybean pods. At adult emergence, fresh body weights were significantly (P<0.01) less on the artificial diet than on soybean pods. Despite the lower adult survivorship and fecundity on artificial plants than on soybean plants, it was demonstrated for the first time that a model simulating a natural plant, can be used as a substrate for egg mass laying, in conjunction with the artificial diet.
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Yonow, Tania, Darren J. Kriticos, Noboru Ota, Gonzalo A. Avila, Kim A. Hoelmer, Huayan Chen, and Valerie Caron. "Modelling the Potential Geographic Distribution of Two Trissolcus Species for the Brown Marmorated Stink Bug, Halyomorpha halys." Insects 12, no. 6 (May 25, 2021): 491. http://dx.doi.org/10.3390/insects12060491.

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The brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), is native to northeast Asia. It was accidentally introduced to Europe and North America, where it has become a key pest, feeding on many important crops. Previous eco-climatic niche modelling indicates that H. halys could expand its distribution vastly, and numerous border interceptions of this pest in many countries, including Australia and New Zealand, indicate that it would be prudent to prepare for its eventual arrival. Similar niche modelling was used to assess the potential distribution of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae), the key parasitoid of H. halys in China. Trissolcus mitsukurii (Ashmead) is one of the main parasitoids of H. halys in Japan. It is known to have existed in Australia since the early 20th century and was also specifically introduced to Australia in the 1960s, and it has now also invaded Italy. We used CLIMEX to model the climatic niche of T. mitsukurii to estimate its global potential distribution. We found that T. mitsukurii should be able to significantly expand its range globally, and that there is a significant degree of overlap in the projected ranges of T. mitsukurii, T. japonicus and H. halys. From a biological control perspective, this implies that the two Trissolcus species may be able to help mitigate the potential impacts of H. halys.
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Stoeckli, Sibylle, Raphael Felber, and Tim Haye. "Current distribution and voltinism of the brown marmorated stink bug, Halyomorpha halys, in Switzerland and its response to climate change using a high-resolution CLIMEX model." International Journal of Biometeorology 64, no. 12 (August 28, 2020): 2019–32. http://dx.doi.org/10.1007/s00484-020-01992-z.

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Abstract Climate change can alter the habitat suitability of invasive species and promote their establishment. The highly polyphagous brown marmorated stinkbug, Halyomorpha halys Stål (Hemiptera: Pentatomidae), is native to East Asia and invasive in Europe and North America, damaging a wide variety of fruit and vegetable crops. In Switzerland, crop damage and increasing populations have been observed since 2017 and related to increasing temperatures. We studied the climatic suitability, population growth, and the number of generations under present and future climate conditions for H. halys in Switzerland, using a modified version of the bioclimatic model package CLIMEX. To address the high topographic variability in Switzerland, model simulations were based on climate data of high spatial resolution (approx. 2 km), which significantly increased their explanatory power, and identified many more climatically suitable areas in comparison to previous models. The validation of the CLIMEX model using observational records collected in a citizen science initiative between 2004 and 2019 revealed that more than 15 years after its accidental introduction, H. halys has colonised nearly all bioclimatic suitable areas in Switzerland and there is limited potential for range expansion into new areas under present climate conditions. Simulations with climate change scenarios suggest an extensive range expansion into higher altitudes, an increase in generations per year, an earlier start of H. halys activity in spring and a prolonged period for nymphs to complete development in autumn. A permanent shift from one to two generations per year and the associated population growth of H. halys may result in increasing crop damages in Switzerland. These results highlight the need for monitoring the spread and population development in the north-western part of Switzerland and higher altitudes of the valleys of the south.
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Fabichaki Paz, Matheus, Yasmin Regina Diel, Patrícia Paula Bellon, and Jonas Felipe Recalcatti. "Efficiency of insecticides on nymphs and adults of Dichelops melacanthus(Dallas, 1851) (Hemiptera: Pentatomidae)." COLLOQUIUM AGRARIAE 17, no. 2 (April 16, 2021): 16–29. http://dx.doi.org/10.5747/ca.2021.v17.n2.a426.

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Thegreen-belly stink bug, Dichelops melacanthus, stands out as one of the main pests of the corn crop, mainly for its potential damage at the beginning of crop development, due to the sap suction at the base of seedlings, causing tillering and trimming symptoms, decreasing productivity and product quality. Aiming at the control of thestink bug, the objective of the present research was to evaluate the effect of insecticides, as well as the lethal time(LT50) of these products on D. melacanthus. To perform the tests, it was used third instar nymphs and adults of D. melacanthusaged up to 72 hours, which were individualized in Petri dishes. For the application of the insecticide, corn leaves were collected and placed in plastic trays. With the aid of a pressurized spray, the insecticides Acefathe + Aluminum silicate (5 g/L), Thiamethoxam + Lambda-Cyhalothrin (1 mL/L), Imidacloprid + Bifenthrin (1.75 mL/L), Bifenthrin + Zeta-Cypermethrin (0.75 mL/L) and Azadiractin (10 mL/L) were applied. In the control, only distilled water was applied. Subsequently, the pulverized leaf pieces were individualized in the Petri dishes, where the third instar and adult bedbugs were already allocated. After application, each treatment was evaluated at 15, 30 minutes, 1, 3, 5, 24 and 48 hours, accounting for insect mortality. Tocorrect mortality, the values were transformed using the Scheneider-Orelli formula. The relationship between the periods of action of the insecticides on the mortality rate of insects was verified by nonlinear regression analysis, using the mathematical model of dose-response. All chemical insecticides evaluated were effective in controlling third instar nymphs; however, when applied to adults, Thiamethoxam + Lambda -Cyhalothrin and Acefathe + Aluminum silicate had reductions in bedbug mortality. Azadiractin showed low efficiency in controlling nymphs and adults of D. melacanthus. Insecticides showed better LT50 in nymphs when compared to adults. The insecticides Imidacloprid + Bifenthrin, Thiamethoxam + Lambda -Cyhalothrin and Bifenthrin + Zeta-Cypermethrin obtained the best LT50 responses for nymphs and adults of the green-belly stink bug. All chemical insecticides evaluated can be used in the integrated management of D. melacanthus.
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Wright, M. G., P. A. Follett, and M. Golden. "Long-term patterns and feeding sites of southern green stink bug (Hemiptera: Pentatomidae) in Hawaii macadamia orchards, and sampling for management decisions." Bulletin of Entomological Research 97, no. 6 (November 12, 2007): 569–75. http://dx.doi.org/10.1017/s0007485307005305.

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AbstractSouthern green stink bug (Nezara viridula, Hemiptera: Pentatomidae) is a pest of macadamia nuts, causing pitting to kernels by feeding. In spite of its pest status, many aspects of the ecology of this insect in macadamia orchards are poorly understood. This study analyzes long-term N. viridula damage to macadamia nuts and investigates the extent to which damage to nuts occurs in the tree canopy, prior to nut-drop. We show that there are distinct seasonal peaks in damage detected after harvest and that, over six years of data collection, mean damage levels were fairly low, albeit with spikes in damage levels recorded. Sampling nuts at peak harvest periods from different strata in the trees and from the ground showed that incidence of damaged nuts within the canopy was typically half as high as on the fallen nuts. Damage to fallen nuts may have occurred prior to nut-drop, and continued to accumulate after nut-drop. These results show that management of N. viridula within macadamia canopies, as opposed to only on fallen nuts, is important. A sampling procedure and predictive model for estimating late-season damage based on early-season damage samples is provided. The model uses January and March damage measurements (based on samples with set level of accuracy), mean temperature and month of the year for which damage is predicted. Early-season damage of 6–10% predicts late-season damage levels that should justify N. viridula suppression based on the nominal threshold (13% damage) used by kernel processors to reject nuts based on damage.
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Živković, Ivana Pajač, Slaven Jurić, Marko Vinceković, Marija Andrijana Galešić, Marijan Marijan, Kristina Vlahovićek-Kahlina, Katarina M. Mikac, and Darija Lemic. "Polyphenol-Based Microencapsulated Extracts as Novel Green Insecticides for Sustainable Management of Polyphagous Brown Marmorated Stink Bug (Halyomorpha halys Stål, 1855)." Sustainability 12, no. 23 (December 3, 2020): 10079. http://dx.doi.org/10.3390/su122310079.

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The brown marmorated stink bug (Halyomorpha halys Stål, 1855) is an invasive polyphagous species that threatens fruit growing both in the United States and Europe. Many pesticide active ingredients have been studied in H. halys management, but for sustainable fruit growing, which implies the reduction of chemical harm to the environment, new safe insecticides should be implemented into the practice. For this purpose, novel green insecticide based on natural polyphenols of species Stevia rebaudiana (Bertoni) Bertoni and Aronia melanocarpa (Michx.) Elliott 1821 was developed. Stevia leaves (SLE) and Aronia pomace (APE) aqueous extracts were prepared using the ultrasound-assisted extraction method. Optimal extraction conditions for bioactive compounds (total polyphenols, flavonoids, anthocyanins, and flavan-3-ols, respectively) and antioxidant activity were determined using response surface methodology. Bioactive compounds rich SLE and APE were encapsulated in calcium alginate microparticles by the ionic gelation method. Physicochemical characteristics (morphology, size, encapsulation efficiency, loading capacity, and swelling) of microparticles showed very good properties with especially high encapsulation efficiency. Fitting to simple Korsmeyer–Peppa’s empirical model revealed that the underlying release mechanism of polyphenols is Fickian diffusion. SLE loaded microparticles showed very good pesticidal efficiency against Halyomorpha halys, especially on younger larval stages after both contact and digestive treatment. Microparticles loaded with APE did not achieve satisfactory digestive efficiency, but a certain toxic impact has been observed at contact application on all H. halys growth stages. Microparticles loaded with SLS exhibited prolonged insecticidal action against H. halys and could be a potential candidate as a green insecticide whose application could increase fruit growing safety.
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Dissertations / Theses on the topic "STINK model"

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Galvin, Geordie. "Comparison of on-pond measurement and back calculation of odour emission rates from anaerobic piggery lagoons." University of Southern Queensland, Faculty of Engineering and Surveying, 2005. http://eprints.usq.edu.au/archive/00001426/.

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Odours are emitted from numerous sources and can form a natural part of the environment. The sources of odour range from natural to industrial sources and can be perceived by the community dependant upon a number of factors. These factors include frequency, intensity, duration, offensiveness and location (FIDOL). Or in other words how strong an odour is, at what level it becomes detectable, how long it can be smelt for, whether or not the odour is an acceptable or unacceptable smell as judged by the receptor (residents) and where the odour is smelt. Intensive livestock operations cover a wide range of animal production enterprises, with all of these emitting odours. Essentially, intensive livestock in Queensland, and a certain extent Australia, refers to piggeries, feedlots and intensive dairy and poultry operations. Odour emissions from these operations can be a significant concern when the distance to nearby residents is small enough that odour from the operations is detected. The distance to receptors is a concern for intensive livestock operations as it may hamper their ability to develop new sites or expand existing sites. The piggery industry in Australia relies upon anaerobic treatment to treat its liquid wastes. These earthen lagoons treat liquid wastes through degradation via biological activity (Barth 1985; Casey and McGahan 2000). As these lagoons emit up to 80 per cent of the odour from a piggery (Smith et al., 1999), it is imperative for the piggery industry that odour be better quantified. Numerous methods have been adopted throughout the world for the measurement of odour including, trained field sniffers, electronic noses, olfactometry and electronic methods such as gas chromatography. Although these methods all have can be used, olfactometry is currently deemed to be the most appropriate method for accurate and repeatable determination of odour. This is due to the standardisation of olfactometry through the Australian / New Zealand Standard for Dynamic Olfactometry and that olfactometry uses a standardised panel of "sniffers" which tend to give a repeatable indication of odour concentration. This is important as often, electronic measures cannot relate odour back to the human nose, which is the ultimate assessor of odour. The way in which odour emission rates (OERs) from lagoons are determined is subject to debate. Currently the most commonly used methods are direct and indirect methods. Direct methods refer to placing enclosures on the ponds to measure the emissions whereas indirect methods refer to taking downwind samples on or near a pond and calculating an emission rate. Worldwide the odour community is currently divided into two camps that disagree on how to directly measure odour, those who use the UNSW wind tunnel or similar (Jiang et al., 1995; Byler et al., 2004; Hudson and Casey 2002; Heber et al., 2000; Schmidt and Bicudo 2002; Bliss et al., 1995) or the USEPA flux chamber (Gholson et al., 1989; Heber et al., 2000; Feddes et al., 2001; Witherspoon et al., 2002; Schmidt and Bicudo 2002; Gholson et al., 1991; Kienbusch 1986). The majority of peer reviewed literature shows that static chambers such as the USEPA flux chamber under predict emissions (Gao et al., 1998b; Jiang and Kaye 1996) and based on this, the literature recommends wind tunnel type devices as the most appropriate method of determining emissions (Smith and Watts 1994a; Jiang and Kaye 1996; Gao et al., 1998a). Based on these reviews it was decided to compare the indirect STINK model (Smith 1995) with the UNSW wind tunnel to assess the appropriateness of the methods for determining odour emission rates for area sources. The objective of this project was to assess the suitability of the STINK model and UNSW wind tunnel for determining odour emission rates from anaerobic piggery lagoons. In particular determining if the model compared well with UNSW wind tunnel measurements from the same source; the overall efficacy of the model; and the relationship between source footprint and predicted odour emission rate.
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Johannessen, Morten Krøtøy, and Torgeir Myrvold. "Stick-Slip Prevention of Drill Strings Using Nonlinear Model Reduction and Nonlinear Model Predictive Control." Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9112.

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The main focus of this thesis is aspects in the development of a system for prevention of stick-slip oscillations in drill strings that are used for drilling oil wells. Stick-slip is mainly caused by elasticity of the drill string and changing frictional forces at the bit; static frictional forces are higher than the kinetic frictional forces which make the bit act in a manner where it sticks and then slips, called stick-slip. Stick-slip leads to excessive bit wear, premature tool failures and a poor rate of penetration. A model predictive controller (MPC) should be a suitable remedy for this problem; MPC has gained great success in constrained control problems where tight control is needed. Friction is a highly nonlinear phenomenon and for that reason is it obvious that a nonlinear model is preferred to be used in the MPC to get prime control. Obviously it is of great importance that the internal model used in the MPC is of a certain quality, and as National Oilwell Varco (NOV) has developed a nonlinear drill string model in Simulink, it will be useful to check over this model. This model was therefore verified with a code-to-code comparison and validated using logging data provided from NOV. As the model describing the dynamics of the drill string is somewhat large, a nonlinear model reduction is needed due to the computational complexity of solving a nonlinear model predictive control problem. This nonlinear model reduction is based on the technique of balancing the empirical Gramians, a method that has proven to be successful for a variety of systems. A nonlinear drill string model has been reduced and implemented to a nonlinear model predictive controller (NMPC) and simulated for different scenarios; all proven that NMPC is able to cope with the stick-slip problem. Comparisons have been made with a linear MPC and an existing stick-slip prevention system, SoftSpeed, developed by National Oilwell Varco.

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Rosano-Matchain, Hugo Leonardo. "Decentralised compliant control for hexapod robots : a stick insect based walking model." Thesis, University of Edinburgh, 2007. http://hdl.handle.net/1842/2574.

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This thesis aims to transfer knowledge from insect biology into a hexapod walking robot. The similarity of the robot model to the biological target allows the testing of hypotheses regarding control and behavioural strategies in the insect. Therefore, this thesis supports biorobotic research by demonstrating that robotic implementations are improved by using biological strategies and these models can be used to understand biological systems. Specifically, this thesis addresses two central problems in hexapod walking control: the single leg control mechanism and its control variables; and the different roles of the front, middle and hind legs that allow a decentralised architecture to co-ordinate complex behavioural tasks. To investigate these problems, behavioural studies on insect curve walking were combined with quantitative simulations. Behavioural experiments were designed to explore the control of turns of freely walking stick insects, Carausius morosus, toward a visual target. A program for insect tracking and kinematic analysis of observed motion was developed. The results demonstrate that the front legs are responsible for most of the body trajectory. Nonetheless, to replicate insect walking behaviour it is necessary for all legs to contribute with specific roles. Additionally, statistics on leg stepping show that middle and hind legs continuously influence each other. This cannot be explained by previous models that heavily depend on positive feedback controllers. After careful analysis, it was found that the hind legs could actively rotate the body while the middle legs move to the inside of the curve, tangentially to the body axis. The single leg controller is known to be independent from other legs but still capable of mechanical synchronisation. To explain this behaviour positive feedback controllers have been proposed. This mechanism works for the closed kinematic chain problem, but has complications when implemented in a dynamic model. Furthermore, neurophysiological data indicate that legs always respond to disturbances as a negative feedback controller. Additional experimental data presented herein indicates that legs continuously oppose forces created by other legs. This thesis proposes a model that has a velocity positive feedback control modulated via a subordination variable in cascade with a position negative feedback mechanism as the core controller. This allows legs to oppose external and internal forces without compromising inter-leg collaboration for walking. The single leg controller is implemented using a distributed artificial neural network. This network was trained with a wider range of movement to that so far found in the simulation model. The controller implemented with a plausible biological.
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Hamilton, Tony. "An analogue model for the simulation of earthquake rupture and stick-slip." Thesis, University of Ulster, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326325.

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Bahtui, Ali. "Development of a constitutive model to simulate unbonded flexible riser pipe elements." Thesis, Brunel University, 2008. http://bura.brunel.ac.uk/handle/2438/3010.

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The principal objective of this investigation is to develop a constitutive model to simulate the hysteresis behaviour of unbonded flexible risers. A new constitutive model for flexible risers is proposed and a procedure for the identification of the related input parameters is developed using a multi-scale approach. The constitutive model is formulated in the framework of an Euler-Bernoulli beam model, with the addition of suitable pressure terms to the generalised stresses to account for the internal and external pressures, and therefore can be efficiently used for large-scale analyses. The developed non-linear relationship between generalised stresses and strains in the beam is based on the analogy between frictional slipping between different layers of a flexible riser and frictional slipping between micro-planes of a continuum medium in nonassociative elasto-plasticity. Hence, a linear elastic relationship is used for the initial response in which no-slip occurs; an onset-slip function is introduced to define the ‘noslip’ domain, i.e. the set of generalised stresses for which no slip occurs; a nonassociative rule with linear kinematic hardening is used to model the full-slip phase. The results of several numerical simulations for a riser of small-length, obtained with a very detailed (small-scale) non-linear finite-element model, are used to identify the parameters of the constitutive law, bridging in this way the small scale of the detailed finite-element simulations with the large scale of the beam model. The effectiveness of the proposed method is validated by the satisfactory agreement between the results of various detailed finite-element simulations for a short riser, subject to internal and external uniform pressures and cyclic bending and tensile loadings, with those given by the proposed constitutive law. The merit of the present constitutive law lies in the capturing of many important aspects of risers structural response, including the energy dissipation due to frictional slip between layers and the hysteretic response. This privilege allows one to accurately study the cyclic behavior of unbonded flexible risers subject to axial tension, bending moment, internal and external pressures.
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Nguyen, Thi Thu Tra. "Dynamic instabilities of model granular materials." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSET007/document.

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Cette thèse étudie les instabilités dynamiques des milieux granulaires modèles saturés à l’aide d’un appareil triaxial classique. Les instabilités englobent la liquéfaction et les effondrements en compression isotrope drainée, les frottements saccadés en compression triaxiale drainée. Ces instabilités apparaissent spontanément à des contraintes effectives de confinement imprévisibles. Elles sont accompagnées de très rapides et très fortes surpressions interstitielles, malgré un drainage approprié; ce que ne présentent pas les milieux granulaires naturels. En compression isotrope drainée (consolidation), des effondrements locaux naissent instantanément. En compression triaxiale drainée, on observe de larges frottements saccadés quasi-périodiques caractérisés par des déformations volumiques et axiales contractantes. De temps en temps, ces effondrements et frottements saccadés locaux peuvent se développer en liquéfaction menant à une destruction complète de la structure granulaire. Les données à haute résolution temporelle issues de ce travail ont permis la découverte d’une nouvelle famille de liquéfaction dynamique et statique. L’étude des émissions acoustiques passives a permis l’identification de signature spectrale caractéristique. Pour les frottements saccadés, la phase de glissement peut être interprétée comme une consolidation dynamique, limitée par l’unique surface en dessous de la ligne critique de rupture dans le plan des contraintes effectives. La séquence temporelle précise des événements exclut que la pression interstitielle soit la cause principale des instabilités. Cependant, le rôle important de la surpression interstitielle est démontré dans des relations quantitatives entre les incréments de contraintes, et de déformations et l’éphémère surpression interstitielle stabilisée développée pendant la phase de glissement. Cela montre finalement la nature quasi-déterministique de ces instabilités dynamiques. Ces relations empiriques sont basées uniquement sur l’amplitude maximale de l’accélération verticale de très courte durée et sont gouvernées indépendamment par la pression de confinement et par l’indice des vides. La similarité de la surpression interstitielle entre différentes instabilités suggère fortement quelques mécanismes similaires de déclenchement, probablement à partir de ré-arrangements de la micro-structure granulaire
This thesis reports a laboratory study on the dynamic instabilities of model saturated granular material using a triaxial apparatus. The term instability consists of isotropic collapse and liquefaction under isotropic compression and of stick-slip under triaxial compression in drained condition. The instabilities spontaneously occur at unpredictable effective stress with unexpected buildup of excess pore pressure irrespective of fully drained condition, contrasting with the instability-free behaviour of natural granular materials. In isotropic compression, instantaneous local collapse happens and in triaxial compression, very large and quasi-periodic stick-slip occurs with sudden volumetric compaction and axial contraction. Sometimes, these local failures (collapse and stick-slip) can develop into total liquefaction failure, destroying completely the granular structure. High time-resolved data permit the discovery of a new family of dynamic and static liquefaction. Passive acoustic measurements allow the identification of typical spectral signature. For stick-slip phenomenon, the slip phase with constant duration of stress drop can be interpreted as dynamic consolidation at constant deviatoric stress, limited by a unique boundary inside the critical state line in the effective stress plane. The precise temporal sequence of mechanical measurements excludes the generated pore pressure as the main cause of the instabilities. However, the role of pore pressure is emphasised by consistent quantitative relations between the amplitude of incremental stresses, incremental strains and the ephemeral stabilised excess pore pressure developed during the dynamic event, leading to the quasi-deterministic nature of granular instabilities. These empirical relations are based only on the short-lived maximum vertical acceleration and governed separately by the confining pressure and the initial void ratio. The similarity of pore pressure evolution for different kinds of instability strongly suggests some common speculative triggering mechanisms, probably originated from different rearrangements of the granular micro-structure
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Mencl, Stine [Verfasser], and Eberhart [Akademischer Betreuer] Zrenner. "Mechanisms of cone photoreceptor cell death in models for inherited retinal degeneration / Stine Mencl ; Betreuer: Eberhart Zrenner." Tübingen : Universitätsbibliothek Tübingen, 2013. http://d-nb.info/1162843748/34.

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Simon, Joshua Cameron. "Response and Failure of Adhesively Bonded Automotive Composite Structures under Impact Loads." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/34881.

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An experimental technique for conducting low speed impact of adhesively bonded automotive composite joints is presented. Based on the use of a modified drop tower, mode I, II, and mixed mode values for critical energy release rate were determined for a composite/epoxy system and used to create a fracture failure envelope. Because load measurements become erratic and unreliable at higher test rates, displacement-based relationships were used to quantify these energy release rates. Displacement data was collected with an imaging system that utilized edge detection to determine displacement profiles, end displacements, and opening displacements where applicable. Because of the resolution of the image-based approach used, determining crack length experimentally was extremely difficult. As a result, numerical methods were developed to objectively determine the crack length based on the available experimental data in mode I, II, and mixed mode I/II configurations. This numerical method uses a nonlinear fit to determine mode I crack lengths and a theoretical model based on cubic equations for mode II and mixed-mode I/II, where the coefficients of the equations are determined by using both boundary and transition conditions that are a result of the test setup. A double cantilever beam (DCB) geometry was chosen to collect mode I data, an end-loaded split (ELS) geometry was used for mode II, and a single leg bend (SLB) geometry was used for mixed-mode I/II. These geometries were used to determine the fracture characteristics of adhesively bonded automotive composites to create fracture failure envelopes as well as provide mode I, II, and mixed-mode I/II data to be used in finite element models. The chosen adhesive exhibited unstable, stick-slip crack growth, which resulted in very few data points being collected from each static DCB specimen as well as drastic drops in energy release rate between initiation and arrest points. Unstable growth also created issues in dynamic testing, as data points surrounding these "stick-slip" events were lost due to the insufficient sampling rate of the available imaging system. Issues also arose with differences between thick and thin composite adherend specimens. These differences could result from additional curing in thick adherend composite specimens due to the adherends retaining heat. DSC testing was conducted on uncured adhesive using a 2, 5, and 10 minute hold at the cure temperature, and significant additional curing was observed between the two and five minute cures. Due to the difference in relative stiffness between the 12 and 36 ply composite, the local loading rate at the crack tip was lower in the 12 ply adherends, possibly allowing for a larger plastic zone and thus a higher energy release rate. As a result, tests were conducted on 36 ply composite specimens at rates of 1 mm/min and 0.1 mm/min to determine if there were loading rate effects. This testing showed that higher initiation energy relase rates were found at the lower test rate, thus reinforcing the local loading rate theory. Due to issues with plastic deformation in aluminum adherends, mode II and mixed-mode I/II data were collected using only composite adherends. Only one data point was collected per specimen as the crack propagated directly into the composite after initiating from the precrack, thus multiple tests were conducted to collect sufficient data for constructing a failure envelope. Once mode I, II and mixed-mode I/II fracture data was collected, a fracture failure envelope was created. This failure envelope, combined with a predetermined factor of safety, could provide some of the necessary tools for design with this adhesive/composite system.
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9

Arcieri, Michael Angel Santos. "Controle de vibrações mecânicas tipo "stick slip" em colunas de perfuração." Pós-Graduação em Engenharia Elétrica, 2013. https://ri.ufs.br/handle/riufs/5011.

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Mechanical vibrations are inevitable in drilling operations. Torsional stick-slip vibrations are vibrations that occur in drilling columns, which are produced by periodic variations of torque and characterized by large fluctuations in the speed of the drill bit. These vibrations are dangerous, primarily by the cyclical characteristic of the phenomenon that by the amplitude of the same, which can cause fatigue of the pipe, failures in the components of the drill string, deformations in the walls of the well, excessive wear of the drill, low rate of penetration, and collapse of the drilling process. The frequency of these unwanted oscillations can be reduced by the application of automatic control techniques. The objective of this study is to evaluate through numerical simulations, the application of conventional control techniques, such as proportional-integral control (PI), and nonlinear, as the sliding mode control (SMC) and the input-output linearization control (IOLC), to eliminate the presence of stick-slip oscillation in drilling columns. The controllers are designed primarily to maintain a constant speed of rotation system, by manipulating engine torque, thereby inferentially control the speed of the drill, thus providing optimum operation conditions, beyond preserving system stability. Results of simulations using drill string torsional models of two degrees of freedom (2-DOF) and four degrees of freedom (4-DOF) show the performance of the proposed control systems, which are analyzed and qualitatively compared.
Vibrações mecânicas são inevitáveis nas operações de perfuração. Vibrações torcionais stick-slip são vibrações que ocorrem em colunas de perfuração, as quais são produzidas pelas variações periódicas de torque e caracterizadas por grandes oscilações da velocidade da broca. Estas vibrações são prejudiciais, mais pela característica cíclica do fenômeno que pela amplitude da mesma, podendo originar fadiga da tubulação, falhas nos componentes da coluna de perfuração, deformações nas paredes do poço, desgaste excessivo da broca, baixa taxa de penetração e, inclusive, colapso do processo de perfuração. A frequência destas oscilações indesejadas pode ser reduzida pela aplicação de técnicas de controle automático. O objetivo deste trabalho é avaliar, mediante simulações numéricas, a aplicação de técnicas de controle convencional, como o controle proporcional-integral (PI), e não linear, como o controle por modos deslizantes (SMC) e o controle por linearização entrada-saída (IOLC) para eliminar a presença de oscilações stick-slip em colunas de perfuração. Os controladores são desenvolvidos principalmente para manter constante a velocidade do sistema de rotação, mediante a manipulação do torque do motor, para assim controlar inferencialmente a velocidade da broca, fornecendo desta maneira condições ótimas de operação, além de preservar a estabilidade do sistema. Resultados das simulações, usando modelos torcionais de uma coluna de perfuração de dois graus de liberdade (2-DOF) e de quatro graus de liberdade (4-DOF), mostram o desempenho dos sistemas de controle propostos, os quais são analisados e comparados qualitativamente.
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Lima, Flávio Manuel Póvoa de. "O contexto da pergunta \"O que é direito?\" na teoria analitica contemporânea." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/2/2139/tde-09012014-142339/.

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Nesta dissertação pretendo reler o debate entre Ronald Dworkin e o positivismo jurídico. Farei isto sob o prisma da filosofia analítica, especificamente, contextualizando o debate no âmbito de uma discussão travada entre três teorias semânticas específicas: a descricional, o externalismo semântico e o bi-dimensionalismo ambicioso. Há algum tempo Dworkin lançou uma crítica ao positivismo, qual seja, o positivismo jurídico pretende reduzir a forma direito de como as coisas são à conformação puramente descritiva de como o mundo é. Disse, ainda, que somente quando concebido como uma teoria semântica é que o positivismo jurídico tornar-se-ia inteligível. Os posivistas, a seu turno, argumentam que a Jurisprudência analítica é um projeto teórico pelo direito e não pelo significado do termo direito e que, portanto, deveríamos manter separados dois tipos de questionamentos: O que é direito? e O que é direito?. Se tudo correr bem, ao reler o debate entre os positivistas e Ronald Dworkin a partir do instrumental obtido no âmbito da teoria semântica, poderemos perceber que pode ser verdade que o positivismo jurídico, enquanto projeto teórico, é sobre o direito, o referente, e não sobre o direito, o termo; entretanto, a forma pela qual o positivismo concebe o questionamento O que é direito?, ele mesmo, parece acabar por qualificá-lo, num sentido não trivial, como semântico.
I intend to reread the debate between Ronald Dworkin and legal positivism. I will do that through the prism of analytic philosophy, specifically in the context of the debate between three specific semantic theories: descriptional, externalism and the ambitious bidimensionalism. Dworkin criticized legal positivism: the legal positivism aims to reduce the law-way of things to the purely descriptive form of the world. He also said that only when conceived as a semantic theory is that legal positivism would become intelligible. The posivists argue that analytical Jurisprudence is a theoretical project about law and not about the meaning of \"law\", therefore we should keep separated two types of questions: \"What is law?\" and \"What is \'law\'?\". If all goes well, when rereading the debate through the prism of the discussion in the context of semantic theories, we will realize that it may be true that legal positivism is about law, the referent, and not about \"law\". However, the way in which positivism conceives the question \"What is law?\" seems to qualify it as semantic in a nontrivial sense.
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Books on the topic "STINK model"

1

Hamilton, Tony. An analogue model for the simulation of earthquake rupture and stick-slip. [S.l: The Author], 1999.

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Bucher, Tim. Stick and tissue modeler's album: Construction projects for free flight aeromodelers. Quartz Hill, Calif: Meteor Pub., 1998.

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Subcortical functions in language and memory. New York: Guilford Press, 1992.

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Stallings, L. H. Marvelous Stank Matter. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252039591.003.0005.

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This chapter reviews the importance of sacred subjectivity to various black sexual cultures. In its proposal of nonmonogamy as an alternative practice for funk's genealogy of affection, relationality, and sexuality between human and nonhuman beings, the chapter addresses M. Jacqui Alexander's question about sacred subjectivity. Using queer legal theory, debates about the marriage crisis in black communities, and cultural depictions of nonmonogamy in the science fiction of Octavia Butler and the erotica of Fiona Zedde, the chapter reveals how funk attends to alternative models of family and community to challenge the heteropatriarchal recolonization that happens with capitalism and the Western model of family.
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Zhou, Youbing, Chris Newman, Yayoi Kaneko, Christina D. Buesching, Wenwen Chen, Zhao-Min Zhou, Zongqiang Xie, and David W. Macdonald. Asian badgers—the same, only different: how diversity among badger societies informs socio-ecological theory and challenges conservation. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198759805.003.0013.

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Of thirteen extant species of true badger, eleven have a distribution in Asia, as do the more loosely affiliated stink- and honey-badgers. Even though these badgers show superficial similarities, they exhibit very different societies, even within same species under different circumstances, and provide an informative model to advance understanding of socio-ecology. They illustrate how group-living is promoted by natal philopatry, and food security; enabled by omnivory and hibernation in cold-winter regions. Conversely predatory, carnivorous species, and those competing for food security within a broader trophic guild, tend to be more solitary. This socio-ecological diversity poses conservation challenges, with Asian badgers vulnerable to habitat loss, urban and road development, direct conflict with people, culling to manage zoonotic disease transmission, and hunting pressure – often for traditional medicine. These threats are ever-more prevalent in expanding Asian economies, where cultural and attitudinal changes are urgently needed to safeguard biodiversity for the future.
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Spencer, James N., and H. Anthony Neidig. Chemical Models: Ball-and-Stick Models of Organic Compounds. Chemical Education Resources, 1994.

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Abbott, Helen. Baudelaire’s Assemblage. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198794691.003.0002.

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Song is a combination of elements, of which the outcome is not always stable. This chapter examines the nature of the bonds formed between poem and music by proposing a new ‘‘assemblage’’ model, which focuses on five key parameters: (a) metre/prosody; (b) form/structure; (c) sound properties/repetition; (d) semantics/word painting; (e) live performance options. This approach bridges methodological gaps exposed through an examination of existing models used in translation theory, adaptation theory, and word/music theory. The two stages in the assemblage model examine: (1) adhesion strength (how closely poem and music stick together); (2) accretion/dilution (how successful the song setting is). The phases of analysis factor in how song is a non-permanent form which goes through multiple iterations of repackaging, including different performances of the same song and different settings of the same poem.
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The Hockey Stick Illusion Independent Minds. Stacey International Publishers, 2010.

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Computer programs for the calculation of dual sting pitch and roll angles required for an articulated sting to obtain angles of attack and sideslip on wind-tunnel models. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1991.

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Center, Langley Research, ed. Computer programs for calculation of sting pitch and roll angles required to obtain angles of attack and sideslip on wind tunnel models. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1988.

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Book chapters on the topic "STINK model"

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Filippov, Alexander E., and Valentin L. Popov. "Study of Dynamics of Block-Media in the Framework of Minimalistic Numerical Models." In Springer Tracts in Mechanical Engineering, 143–68. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_7.

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AbstractOne of the principal methods of preventing large earthquakes is stimulation of a large series of small events. The result is a transfer of the rapid tectonic dynamics in a creep mode. In this chapter, we discuss possibilities for such a transfer in the framework of simplified models of a subduction zone. The proposed model describes well the basic characteristic features of geo-medium behavior, in particular, statistics of earthquakes (Gutenberg Richter and Omori laws). Its analysis shows that local relatively low-energy impacts can switch block dynamics from stick–slip to creep mode. Thus, it is possible to change the statistics of seismic energy release by means of a series of local, periodic, and relatively low energy impacts. This means a principal possibility of “suppressing” strong earthquakes. Additionally, a modified version of the Burridge-Knopoff model including a simple model for state dependent friction force is derived and studied. The friction model describes a velocity weakening of friction between moving blocks and an increase of static friction during stick periods. It provides a simplified but qualitatively correct stability diagram for the transition from smooth sliding to a stick–slip behavior as observed in various tribological systems. Attractor properties of the model dynamic equations were studied under a broad range of parameters for one- and two-dimensional systems.
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Burduk, Robert, and Pawel Trajdos. "Construction of Sequential Classifier Based on Broken Stick Model." In Lecture Notes in Computer Science, 132–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40846-5_14.

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Insperger, Tamas, Richard Wohlfart, Janos Turi, and Gabor Stepan. "Equations with Advanced Arguments in Stick Balancing Models." In Time Delay Systems: Methods, Applications and New Trends, 161–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25221-1_12.

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Watanabe, Kazumi. "Wave Radiation from a Stick-Slip-Like Source Motion (SH-Wave)." In Advanced Dynamics and Model-Based Control of Structures and Machines, 205–13. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0797-3_24.

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Chang, Tienchong. "Stick-Spiral Model for Studying Mechanical Properties of Carbon Nanotubes." In Challenges and Advances in Computational Chemistry and Physics, 297–322. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9785-0_11.

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Reddy, Vempada Ramu, and Tanushyam Chattopadhyay. "Human Activity Recognition from Kinect Captured Data Using Stick Model." In Human-Computer Interaction. Advanced Interaction Modalities and Techniques, 305–15. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07230-2_30.

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Chelidze, T., and N. Varamashvili. "Models of Stick-Slip Motion: Impact of Periodic Forcing." In Synchronization and Triggering: from Fracture to Earthquake Processes, 23–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12300-9_2.

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Ananthakrishna, G., and Hema Ramachandran. "Jerky flow, stick-slip in geological materials and earthquake models." In Non-Linearity and Breakdown in Soft Condensed Matter, 78–106. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-58652-0_31.

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Silveira, Marcos, Charles Wang, and Marian Wiercigroch. "Analysis of Stick-Slip Oscillations of Drill-String via Cosserat Rod Model." In IUTAM Symposium on Nonlinear Dynamics for Advanced Technologies and Engineering Design, 337–45. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5742-4_26.

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Scali, Valerio. "Metasexual Stick Insects: Model Pathways to Losing Sex and Bringing It Back." In Lost Sex, 317–45. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2770-2_16.

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Conference papers on the topic "STINK model"

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Fleischer, Shelby J. "Phenology and dynamics of the invasive brown marmorated stink bug,Halyomorpha halys, as revealed in an agent-based model." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.108790.

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Andersen, Brian, Mogens Blanke, and Jan Helbo. "Two-Mode Resonator and Contact Model for Standing Wave Piezomotor." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21484.

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Abstract The paper presents a model for a standing wave piezoelectric motor with a two bending mode resonator. The resonator is modelled using Hamilton’s principle and the Rayleigh-Ritz method. The contact is modelled using the Lagrange Multiplier method under the assumption of slip and it is shown how to solve the set of differential-algebraic equations. Detailed simulations show resonance frequencies as function of the piezoelement’s position, tip trajectories and contact forces. The paper demonstrates that contact stiffness and stick should be included in such a model to obtain physically realistic results and a method to include stick is suggested.
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Chon, Choon T., Homa Mohammadtorab, and Mohamed El-Essawi. "Generic “Stick” Model of a Vehicular Structure." In 6th International Conference on Vehicle Structural Mechanics and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1986. http://dx.doi.org/10.4271/860825.

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Liang, Shuai, Weibin Rong, Shizhong Zhang, and Wei Zhang. "A novel friction model for stick-slip driving." In 2014 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2014. http://dx.doi.org/10.1109/icma.2014.6885736.

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Yunibhand, Kuplong, Hirotsugu Kinoshita, and Yoshinori Sakai. "Hand gesture recognition using a stick figure model." In Visual Communications '93, edited by Barry G. Haskell and Hsueh-Ming Hang. SPIE, 1993. http://dx.doi.org/10.1117/12.157879.

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Dai, Tianjiao, Naiquan Ye, and Svein Sævik. "The Effect of Stick Stiffness of Friction Models on the Bending Behavior in Non-Bonded Flexible Risers." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62644.

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This paper investigates the effect of stick stiffness on the bending behavior in non-bonded flexible risers. The stick stiffness was normally implemented in the friction model for calculating the friction stress between layers in such structures. As the stick stiffness may be too small to achieve the plane-surfaces-remain-plane assumption under low contact pressure in some friction models [1], a new friction model was proposed for maintaining the constant stick stiffness in the present work. Less stick stiffness than that obtained by the plane-surfaces-remain-plane assumption was observed in test data. It was assumed that the stick stiffness reduction is caused by shear deformation of plastic layers. A numerical study on stick stiffness by including the shear deformation effect was carried out and verified against full scale tests with respect to the bending moment-curvature relationship.
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Macrì, F., and S. Ricci. "Increasing Updated FE Model Fidelity Using a Generalized Delta Stick Model Approach." In AIAA Modeling and Simulation Technologies Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-4715.

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Hayirli, Ugur, and Altan Kayran. "Stick Model Development of Aircraft Structures for Dynamic Analysis." In 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2017. http://dx.doi.org/10.2514/6.2017-0407.

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Sun, Baiqing, Zhe Li, Qiuhao Zhang, Linlin Song, Wenbo Fan, and Junyou Yang. "Dynamic Model and Control of a Walking Stick Robot." In 2018 IEEE International Conference on Intelligence and Safety for Robotics (ISR). IEEE, 2018. http://dx.doi.org/10.1109/iisr.2018.8535669.

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Khulief, Y. A., F. A. Al-Sulaiman, and S. Bashmal. "Modeling of Stick-Slip in Multibody Drilling Systems." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84225.

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Drillstring vibration is one of the major causes for a deteriorated drilling performance. Field experience revealed that it is crucial to understand the complex vibrational mechanisms experienced by a drilling system in order to better control its functional operation and improve its performance. Stick-slip oscillations due to contact between the drilling bit and formation is known to excite severe torsional and axial vibrations in the drillstring. A multibody dynamic model of the drilling system including the drillpipes, drillcollars, and the rotary drive is formulated. The equation of motion of the rotating drillstring is derived using Lagrangean approach in conjunction with the finite element method. The model accounts for the gyroscopic effect, the inertia coupling, the effect of the gravitational force field, and the stick-slip interaction forces. Explicit expressions of the finite element inertia coupling and axial stiffening matrices are derived using a consistent mass formulation. Modal transformations are invoked to obtain a reduced order modal form of the dynamic equations. The developed model is integrated into a computational scheme to calculate time-response of the drillstring system in the presence of stick-slip excitations.
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Reports on the topic "STINK model"

1

Banks, H. T., J. B. Hood, N. G. Medhin, Jr Samuels, and J. R. A Stick-Slip/Rouse Hybrid Model for Viscoelasticity in Polymers. Fort Belvoir, VA: Defense Technical Information Center, November 2006. http://dx.doi.org/10.21236/ada459065.

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Hu, Xu, and Yiwu Zhou. Prediction models for prognosis of vespidae sting: A protocol for systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, March 2021. http://dx.doi.org/10.37766/inplasy2021.3.0076.

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