Дисертації з теми "Structural dynamics Testing"
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Hay, Neil Conway. "The simulation of random environments for structural dynamics testing." Thesis, Edinburgh Napier University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328063.
Повний текст джерелаBonnet, Paul A. "The development of multi-axis real-time substructure testing." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:39730635-b112-4775-9956-73d26d964178.
Повний текст джерелаDancila, Dragos Stefan. "Energy-dissipating tensile composite members with progressive failure." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/12474.
Повний текст джерелаValdés, Julio R. "Simultaneous determination of frequency dependent modulus and damping from resonant column tests." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20169.
Повний текст джерелаDe, Villiers Pieter Jacobus. "Imposed loads for inaccessible roofs of light industrial steel buildings." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53460.
Повний текст джерелаSome digitised pages may appear illegible due to the condition of the original hard copy.
ENGLISH ABSTRACT: A critical evaluation of provisions for imposed loads in the South African Loading Code for design of structures, SABS 0160-1989 (SABS), by comparison with other codes was performed earlier. The evaluation revealed the SABS loading code to be generally non-conservative in its provisions for imposed loads for a range of general and specialist occupancy classes. The SABS provision for imposed loads for inaccessible roofs was found to be substantially non-conservative in comparison with the other codes. An investigation into the imposed load for inaccessible roofs is subsequently performed in order to establish a scientific rationale through which the codified design values may be measured effectively. Due to the lack of information and the large uncertainties involved in the imposed roof load, stochastic treatment of the loads is implemented. This is in line with the stochastic modelling of loads as implemented in general. The approach applied is to select a type of building that can be regarded as a generic example of buildings to which these loads apply, and to discretisize the load into the various sub-mechanisms that translate into the imposed roof load. The probabilistic models for the load mechanisms are then quantified, either through physical load surveys, or through conducting an expert survey for those variables which are not observable. The use of expert opinion as a resource for information is not readily accessible in terms of yielding scientifically defendable results. Therefore, the expert survey is performed as a calibrated experiment whereby weights were calculated for the individual experts' opinions and their opinions combined accordingly. The probabilistic models for the load mechanisms are then translated into load effects by taking into account the physical process resulting in the load effects. By applying these mechanisms in such a way as to maximise the said load effects, equivalent uniformly distributed loads (EUDL's) were calculated for each mechanism. The probabilistic models obtained in terms of the EUDL's pose an easily accessible format through which existing load models and codified provisions can be evaluated. These load models are then utilised to evaluate the SABS provisions in terms of the level of reliability catered for by SABS ultimate limit-state design criteria. It is concluded that the SABS conservatively provides for maintenance loads on the roof, while the reliability for construction loads is non-conservative for large tributary areas and highly non-conservative for small areas. The load models so obtained can further be applied for structural reliability assessment.
AFRIKAANSE OPSOMMING: "n Kritiese evaluasie van die voorskrifte vir opgelegde belastings in die Suid- Afrikaanse Selastingskode vir die ontwerp van strukture, SASS 0160-1989 (SASS) deur 'n vergelyking met ander kodes is vroeër uitgevoer. Die evaluasie het getoon dat die SASS in die algemeen onkonserwatief is in sy voorsiening vir opgelegde belastings oor 'n bereik van algemene en spesialis okkupasie tipes. Die SASS voorskrif vir opgelegde belastings vir ontoeganklike dakke is hoogs onkonserwatief in vergelyking met die ander kodes. 'n Ondersoek na die opgelegde belasting vir ontoeganklike dakke word gevolglik uitgevoer met die doelom 'n wetenskaplike rasionaal daar te stel waardeur die gekodifiseerde voorskrifte effektief gemeet kan word. As gevolg van die gebrek aan inligting en groot onsekerhede betrokke by die opgelegde dakbelasting word stogastiese modellering geimplimenteer. Die aanslag wat gevolg is, is om 'n tipe gebou te selekteer wat beskou kan word as verteenwoordigend van die geboue waarvoor hierdie belastings van toepassing is, en om die belasting te diskretiseer in die verskeie lasmeganismes wat die opgelegde dakbelasting voortbring. Die waarskynlikheidsmodelle vir die lasmeganismes word dan gekwantifiseer, óf deur fisiese opnames, óf deur die uitvoering van 'n ekspertopname vir daardie veranderlikes wat nie waarneembaar is nie. Die gebruik van ekspert opinie as "n bron van inligting is nie maklik toeganklik in terme daarvan om wetenskaplik verdedigbare resultate te lewer nie. Daarom is die ekspert-opname uitgevoer soos 'n gekalibreerde eksperiment waardeur relatiewe gewigte bereken word vir die individuele eksperts en hulopinies daarvolgens gekombineer word. Die waarskynlikheidsmodelle vir die lasmeganismes word dan omgeskakel in laseffekte deur in agneming van die fisiese proses wat die las-effek voortbring. Deur die lasmeganismes op só 'n manier toe te pas dat die betrokke las-effekte gemaksimeer word, word ekwivalent uniforme belastings (EUS's) bepaal. Die waarskynlikheidsmodelle in terme van EUS's bied "n maklik toeganklike formaat waardeur bestaande lasmodelle en gekodifiseerde voorskrifte evalueer kan word. Die lasmodelle word gevolglik gebruik om die SASS voorskrifte te evalueer in terme van die vlak van betroubaarheid wat gehandhaaf word deur SASS limiet-staat ontwerp kriteria. Dit is bepaal dat die SASS konserwatief voorsiening maak vir onderhoudslaste op die dak, maar onkonserwatief tot hoogs-onkonserwatief is vir konstruksie laste. Die bepaalde lasmodelle kan verder toegepas word in strukturele betroubaarheids analise.
Werner, Carl Scott. "Cyclic Behavior of Screen Grid Insulated Concrete Form Components." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/364.
Повний текст джерелаElgazzar, Hesham. "End-Shield Bridges for High-Speed Railway : Full scale dynamic testing and numerical simulations." Licentiate thesis, KTH, Bro- och stålbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-204774.
Повний текст джерелаQC 20170403
Tarazaga, Pablo Alberto. "Dynamics and Control of a Pressurized Optical Membranes." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28727.
Повний текст джерелаPh. D.
Demharter, Samuel. "Novel applications for hierarchical natural move Monte Carlo simulations : from proteins to nucleic acids." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:c0ef3ba5-4fe0-4684-a0ce-202003cd79a5.
Повний текст джерелаGarth, John Stuart. "Experimental Investigation of Lateral Cyclic Behavior of Wood-Based Screen-Grid Insulated Concrete Form Walls." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1857.
Повний текст джерелаFu, Tuan-Chun. "Development of Effective Approaches to the Large-Scale Aerodynamic Testing of Low-Rise Building." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/986.
Повний текст джерелаUliana, David A. "The effects of earthquake excitations on reticulated domes." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45667.
Повний текст джерелаComparisons were made on the behavior of two full-sized reticulated domes subjected to uniform static loads only and uniform static loads with earthquake excitations. Space truss elements were used in the dome models. The stiffness matrix of the space truss element allows for the nonlinear strain-displacement behavior and the stress-strain behavior of the material is modeled with a bilinear approximation. The nonlinear solution technique is the Newton-Raphson method while the direct integration technique is the Newmark- Beta method.
The joint displacements for the static and the dynamic analyses were compared for both domes along with the axial stresses in all members. The percentage increases in the axial stresses of the dynamic analyses as compared to those of the static analyses were determined.
The reticulated domes used in the study were found to bet capable of withstanding the earthquake excitations when subjected to various uniform loads without failure.
Master of Science
Liu, Wenjie. "Structural dynamic analysis and testing of coupled structures." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246801.
Повний текст джерелаChen, Yousheng. "Model calibration methods for mechanical systems with local nonlinearities." Doctoral thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-57638.
Повний текст джерелаPandiya, Nimish. "Design and Validation of a MIMO Nonlinear Vibration Test Rig with Hardening Stiffness Characteristics in Multiple Degrees of Freedom." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504879018436068.
Повний текст джерелаBrizard, Denis. "Contrôle des vibrations de charge utile sur lanceur spatial." Thesis, Ecully, Ecole centrale de Lyon, 2011. http://www.theses.fr/2011ECDL0041/document.
Повний текст джерелаSpace launchers undergo a certain amount of complex excitations during their lifecycle. These excitations are transmitted to the payload in a structure-born or air-born way. To improve the dynamic behaviour and thus ensure the protection of the payload, secondary systems must be added to the launcher – indeed, the architecture of the launcher is fixed at the beginning of the project. The essential part of this thesis work is dedicated to the optimal fitting of a system capable of reducing the vibration response of the payload, using appropriate models. Therefore a double modal synthesis method is implemented, allowing to calculate the vibrational response of the structure with reduced bases and offering improved performances over conventional methods. The addition of a local damping device requires the consideration of one or more structural modifications in the model, a dedicated method is thus developped along with a specific continuation algorithm. A friction damper is retained, a prototype is designed and built. It is first characterized alone ; the identified behaviour is that of a spring in series with a dry friction element, a simple Coulomb friction law enables to reproduce the experimental curves. A scale model of the launcher’s last stage is designed and built. The friction device is then mounted inside the scale model and leads to a significant reduction of the payload vibration levels
Daborn, Philip Matthew. "Smarter dynamic testing of critical structures." Thesis, University of Bristol, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.683391.
Повний текст джерелаGopalakrishnamurthy, Sharath H. "Structural integrity inspection using dynamic responses /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418023.
Повний текст джерелаSimmons, Martin Christopher. "Safety through novel dynamic pressure testing of aircraft structural panels." Thesis, University of Liverpool, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417174.
Повний текст джерелаNegro, P. "Combined experiment and computation for dynamic testing of structures." Thesis, Swansea University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638308.
Повний текст джерелаKarar, Sayed Shehata. "Adaptive force control of hydraulic actuator systems for dynamic structural testing." Thesis, University of Sheffield, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299026.
Повний текст джерелаKurt, Efe Gokce. "Investigation Of Strenghthening Techniques Using Pseudo-dynamic Testing." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612181/index.pdf.
Повний текст джерелаSilva, Andre Espozel Pinheiro da. "Testing dynamic agency predictions to corporate finance." reponame:Repositório Institucional do FGV, 2017. http://hdl.handle.net/10438/18243.
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This papers tests theoretical predictions concerning to agent compensation, debt structure and investment in the models of dynamic agency in DeMarzo and Fishman (2007), DeMarzo and Sannikov (2006) and DeMarzo, Fishman, He and Wang (2012). The results related to agent compensation are consistent with the patterns predicted in the models, indicating that the firm-years that the models would have as more likely to pay dividends are indeed the ones more likely to pay; also, among firms that pay dividends, more profits generate higher dividend payments and higher executive compensation, as predicted in the models. The prediction that firms that go well and reach a payment threshold present marginal q equal to average q, and thus after controlling for average q cash flows would not explain investment is also supported by the tests in here. On the other hand, predictions related to the role of the credit line and to the debt structure are not compatible with the results in here. The credit line doesn’t seem to be the provider of financial slack that protects the firm from low cash flows and also doesn’t seem to have the dynamics of being paid when profits are high and being more used when profits are low.
Thölken, Denise. "Efeito da rigidez de pilar parede no comportamento sísmico de edifício de concreto armado." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/962.
Повний текст джерелаThe aim of this work is to study the stiffness effect of wall columns on structural behavior of reinforced concrete buildings subjected to seismic action. The premises of the Brazilian standard ABNT NBR14521:2006 were considered, which presents criteria for earthquake resistant design of structures. The linear analysis employed the methods of the Brazilian standard - equivalent static load method, response spectrum analysis and time history method - were applied to buildings with two types of structural systems, namely concrete frame and dual system concrete frame and wall columns. The results were analyzed in edge frames structures in the longitudinal and transverse directions, comparing the displacement of each floor and shear, bending moment and axial forces on the bases of the columns. A comparison was made between the three methods applied and the structural systems analyzed.
Macdonald, John Hugh George. "Identification of the dynamic behaviour of a cable-stayed bridge from full scale testing during and after construction." Thesis, University of Bristol, 2000. http://hdl.handle.net/1983/68b3c36f-6f7a-44ab-845d-8f5599d863b6.
Повний текст джерелаWilliams, David Michael. "Numerical modelling of real-time sub-structure testing." Thesis, University of Oxford, 2000. http://ora.ox.ac.uk/objects/uuid:c2c9ff13-887f-4065-9ce6-1969375099c7.
Повний текст джерелаChin, Victor B. L. "The dynamic response of pile-soil interfaces during pile driving and dynamic testing events." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/9421.
Повний текст джерелаAraiza, Garaygordobil Juan Carlos. "Dynamic assessment of structural building components." Doctoral thesis, Universitat Politècnica de Catalunya, 2003. http://hdl.handle.net/10803/6154.
Повний текст джерелаThe general objective of the thesis consists on the demonstration of the usefulness of dynamic assessment on building components (such as masonry walls, stone piers or RC beams and slabs) using a simple-layout experiment but based intensively in numerical simulation.
The methodology to achieve the objective include tasks such as:
- The study the influence of different parameters on dynamic behavior of structures. This process -also known as parametrical study- recognizes the influence of the variables when performing a model updating.
- A series of laboratory campaigns to identify the influence of different structural damages on dynamic parameters. Studied damage-influence include: Stiffness deterioration by cracking on supported or suspended beams, carbonation of concrete, sulfate attack on concrete and rebars, chloride attack on concrete and axial load on masonry walls and piers.
- The application of a simple-layout method of dynamic assessment in real-life buildings. In some of those cases, static load test (direct identification method) is also developed to compare the reliability of the dynamic approach.
Experimental works and field studies carried out in this investigation have permitted to conclude that a combined implementation of a simple dynamic testing and numerical modeling is able to characterize the current structural conditions of a building component. The proposed dynamic assessment layout has conduced to the identification of characteristics such as boundary conditions, cracking levels, geometry properties or levels of axial loading. By comparing systematically the experimental and the numerical frequencies, it can also be concluded that a detailed model is able to predict the dynamic behavior of a building component. This prediction was accurate not only for undamaged conditions, but also for different damage scenarios. The present research has contributed to ascertain that dynamic testing is a valuable tool to assess the structural conditions of single concrete or masonry building elements such as concrete beams, RC or prestressed slabs, masonry walls or stone piers.
Lestari, Wahyu. "Damage of composite structures : detection technique, dynamic response and residual strength." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/12072.
Повний текст джерелаRigby, Douglas Bertrand. "Testing and constitutive modelling of saturated interfaces in dynamic soil-structure interaction." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/187454.
Повний текст джерелаHan, Tai Chun. "Effects of geometric variation and residual stress on the dynamic response of multilayerd thin membrane structures." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Summer2007/T_Han_080107.pdf.
Повний текст джерелаTan, Hock Chuan. "Load-induced damage evaluation in reinforced concrete structures using dynamic response signatures." Thesis, University of Aberdeen, 2000. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602019.
Повний текст джерелаMukalay, J. N. "Structural bond behaviour of ribbed GFRP rebars in concrete beams under dynamic loading." Thesis, Vaal University of Technology, 2019. http://hdl.handle.net/10352/461.
Повний текст джерелаThis research investigated the structural bond strength of GFRP rebars in concrete beams under dynamic loading with the aim to characterize the structural bond behaviour and evaluate the limitations of the GFRP rebars under dynamic loading. The dynamic loading in this study was set at 500 repeating cycles to simulate a more realistic dynamic loading scenario such as earthquake since most dynamic loading studies are carried under ten repeating cycles. The experimental work was divided into 2 main tests which were firstly, the tensile tests of the GFRP rebars in order to evaluate the tensile strength of the rebars and characterize their properties. Secondly, the flexural tests of GFRP and steel reinforced concrete beams in order to evaluate the bond strength of GFRP and steel rebars, to characterize the average bond strength of GFRP and steel reinforced concrete beams under dynamic loading and finally to compare the average bond strength of GFRP rebars to Steel rebars in both dynamic and static loadings. The tensile tests were carried out using a Universal Testing Machine (UTM) and the results of the tensile tests of the GFRP rebars showed that the average experimental tensile strength of GFRP rebars was only 56.65% of the nominal tensile strength provided on the supplier data sheet. As for flexural tests, they were carried out through a four-point bending test using a UTM in conjunction with a universal dynamic shaker to create the dynamic loading set up. Steel reinforced concrete beams were used as control beams during the tests and factors such as the tensile strength of the GFRP rebars, the slip of the rebars, the load-deflection relationship and the stress-strain relationship were investigated. The results of the tests showed that the tensile strength of the GFRP rebar is strongly proportional to the maximum beam load bearing capacity and the maximum stresses of GFRP reinforced concrete beams. The results also showed that the average bond strength of GFRP rebars in static loading (8.44 MPa) was only 80% of the average bond strength in dynamic loading (10.95 MPa). Moreover, the experimental work showed that the failure of GFRP reinforced concrete beams depicted large deflections (19 mm) and slips (5 mm to 12.5 mm) when compared to steel reinforced concrete beams (for which the maximum deflection was 9.66 mm at failure and slippage values of 2 mm to 10 mm). Based on that it could be stipulated that the tensile strength of GFRP rebars is one determinant factor to the bond strength behaviour of GFRP rebars in concrete. Hence, the structural bond behaviour of GFRP rebars could be well-defined if more studies were done on the bond behaviour of GFRP rebars in concrete beams under dynamic loading using another type of GFRP rebars that would consist of a relatively high tensile strength as compared to the ones used in this study and different surface texture.
Martin, Kipp Alan. "BEHAVIOR AND DESIGN OF MONOTUBE SIGN SUPPORT STRUCTURES (VORTEX SHEDDING, DYNAMIC FORCES, STRAIN GAGE, FIELD TESTING, COMPUTER MODEL)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291193.
Повний текст джерелаHammond, Lloyd Charles 1961. "The structural response of submerged air-backed plates to underwater explosions." Monash University, Dept. of Civil Engineering, 2000. http://arrow.monash.edu.au/hdl/1959.1/9244.
Повний текст джерелаHedric, Andrew C. "Dynamic Behaviors of Historical Wrought Iron Truss Bridges – a Field Testing Case Study." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822751/.
Повний текст джерелаHallak, Yanina Soledad. "DESIGN, MANUFACTURE, DYNAMIC TESTING, AND FINITE ELEMENT ANALYSIS OF A COMPOSITE 6U CUBESAT." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1572.
Повний текст джерелаPearce, Garth Morgan Kendall Mechanical & Manufacturing Engineering Faculty of Engineering UNSW. "High strain-rate behaviour of bolted joints in carbon fibre composite structures." Awarded by:University of New South Wales. Mechanical & Manufacturing Engineering, 2009. http://handle.unsw.edu.au/1959.4/44593.
Повний текст джерелаHu, Shanshan. "AFFECT, MOTIVATION, AND ENGAGEMENT IN THE CONTEXT OF MATHEMATICS EDUCATION: TESTING A DYNAMIC MODEL OF INTERACTIVE RELATIONSHIPS." UKnowledge, 2018. https://uknowledge.uky.edu/edp_etds/71.
Повний текст джерелаCoussa, Fabien. "Du comportement dynamique de matériaux composites tissés à matrice polyamide." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM063/document.
Повний текст джерелаCar manufacturers are looking for solutions to lighten their vehicles in order to meet pollutant emission requirements – for thermal engines – or to extend their range – for electric vehicles. Composite materials, among other solutions, offer excellent strength and durability. However increased per unit cost and manufacturing time are among the main drawbacks material producers have to overcome in order to make composite solutions viable for mass-market production. In that prospect, woven glass fibers and thermoplastic matrices respectively are more serious contenders than aeronautic-grade composites. The objective application is a door reinforcement module, whose main function is to act as a safety net, adding its own stiffness and strength to that of the steel door and preventing any foreign object from entering the passenger compartment. A main preoccupation is therefore the constitutive behavior of that material under strain rates varying from 10-3 s-1 to approximately 50 s-1. The study objective is to develop a physically-based constitutive law modelling in order to take into account strain-rate sensitivity on behavior. A new and consistent experimental procedure aiming at capturing the influence of speed solicitation on non-linear internal mechanisms is developed and allows identifying non-linear constitutive law parameters over a wide range of strain rates until failure. Resulting mainly from direct evaluations and direct identification procedure, the accuracy of the implemented constitutive law is guaranteed through numerical computations involving effects of material and structural heterogeneities
Ouellette, Jeffrey Alan. "Modeling and Scaling of a Flexible Subscale Aircraft for Flight Control Development and Testing in the Presence of Aeroservoelastic Interactions." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51819.
Повний текст джерелаPh. D.
Elshesheny, Ahmed. "Dynamic soil-structure interaction of reinforced concrete buried structures under the effect of dynamic loads using soil reinforcement new technologies. Soil-structure interaction of buried rigid and flexible pipes under geogrid-reinforced soil subjected to cyclic loads." Thesis, University of Bradford, 2019. http://hdl.handle.net/10454/18312.
Повний текст джерелаGovernment of Egypt
Ozerkan, Taner. "Instrumented Monitoring And Dynamic Testing Of Metu Cable Stayed Pedestrian Bridge And Comparisons Against The Analytical Model Simulations." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606335/index.pdf.
Повний текст джерелаCalanni, Fraccone Giorgio M. "Bayesian networks for uncertainty estimation in the response of dynamic structures." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24714.
Повний текст джерелаCommittee Chair: Dr. Vitali Volovoi; Committee Co-Chair: Dr. Massimo Ruzzene; Committee Member: Dr. Andrew Makeev; Committee Member: Dr. Dewey Hodges; Committee Member: Dr. Peter Cento
Kahraman, Engin. "Investigation Of The Dynamic Properties Of Plate-like Structures." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613703/index.pdf.
Повний текст джерелаresonance frequencies, mode shapes and damping ratios. In the second part, a recent modal analysis technique, Operational Modal Analysis, is also applied in the laboratory environment. Since Operational Modal Analysis method does not require any information of input forcing, the fin structure is tested under both mechanical and acoustical types of excitations without measuring the given input forces. Finally, Operational Modal Analysis and Testing is also performed under various flow conditions generated in the wind tunnel which may simulate the real operating environment for the fin structure. The modal parameters extracted under these flow conditions are then compared with the previously obtained Finite Element, Classical and Operational Modal Analyses results.
Shepenkov, Valeriy. "Vibration Modal Analysis of a Deployable Boom Integrated to a CubeSat." Thesis, KTH, Strukturmekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122076.
Повний текст джерелаEn CubeSat eller kubisk satellit är effektivt för att studera rymden runtjorden på grund av dess låga kostnad, enkla underhåll och korta ledtid. Enstor utmaningen i utformningen av små satelliter är att uppnå de tekniskaoch vetenskapliga kraven. Detta arbete har analyserat de dynamiska egenskapernahos en utfällbar band-fjäder bom i syfte att verifera och för attstudera bommens utfällningsdynamiska effekter på satellitens bana och attityd.Den utfällda bommens dynamiska egenskaper har studerats genomsimuleringar och experimentella tester. Ett tyngdkraftskompenserande systemhar använts för att simulera tyngdlöshet i de experimentella testernaoch simuleringar visar att utformningen av detta system påverkar resultatenolika beroende på svängingsmodens form.
Brackus, Travis R. "Destructive Testing and Finite-Element Modeling of Full-Scale Bridge Sections Containing Precast Deck Panels." DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/861.
Повний текст джерелаMutlu, Mehmet Basar. "Numerical Simulations Of Reinforced Concrete Frames Tested Using Pseudo-dynamic Method." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614460/index.pdf.
Повний текст джерелаKahle, Matthew Gilbert. "Partially restrained composite connections : design and analysis of a prototype structure." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/20830.
Повний текст джерелаUddin, Gazi Salah. "Nonlinear and Nonparametric Dynamical Methods in Economics and Finance." Doctoral thesis, Linköpings universitet, Nationalekonomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-127340.
Повний текст джерела