Готові списки джерел за темами / Soot sheet dimension

Добірка наукової літератури з теми "Soot sheet dimension"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Зміст

Статті в журналах
Дисертації
Книги
Частини книг
Тези доповідей конференцій

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Soot sheet dimension".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Soot sheet dimension"

Qamar, Nader H., Graham J. Nathan, Zeyad T. Alwahabi, and Qing N. Chan. "Soot sheet dimensions in turbulent nonpremixed flames." Combustion and Flame 158, no. 12 (December 2011): 2458–64. http://dx.doi.org/10.1016/j.combustflame.2011.04.017.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Valencia, Andrés, Martine Talbaut, Jérôme Yon, Gilles Godard, Carole Gobin, and Alexis Coppalle. "Soot and velocity mapping and 2D soot sheet dimensions in a buoyant wall-fire." Proceedings of the Combustion Institute 36, no. 2 (2017): 3219–26. http://dx.doi.org/10.1016/j.proci.2016.06.142.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Cote, Laura J., Jaemyung Kim, Vincent C. Tung, Jiayan Luo, Franklin Kim, and Jiaxing Huang. "Graphene oxide as surfactant sheets." Pure and Applied Chemistry 83, no. 1 (December 1, 2010): 95–110. http://dx.doi.org/10.1351/pac-con-10-10-25.

Повний текст джерела

Анотація:

Graphite oxide sheet, now referred to as graphene oxide (GO), is the product of chemical oxidation and exfoliation of graphite powders that was first synthesized over a century ago. Interest in this old material has resurged in recent years, especially after the discovery of graphene, as GO is considered a promising precursor for the bulk production of graphene-based materials. GO sheets are single atomic layers that can readily extend up to tens of microns in lateral dimension. Therefore, their structure bridges the typical length scales of both chemistry and materials science. GO can be viewed as an unconventional type of soft material as it carries the characteristics of polymers, colloids, membranes, and as highlighted in this review, amphiphiles. GO has long been considered hydrophilic due to its excellent water dispersity, however, our recent work revealed that GO sheets are actually amphiphilic with an edge-to-center distribution of hydrophilic and hydrophobic domains. Thus, GO can adhere to interfaces and lower interfacial energy, acting as surfactant. This new property insight helps to better understand GO’s solution properties which can inspire novel material assembly and processing methods such as for fabricating thin films with controllable microstructures and separating GO sheets of different sizes. In addition, GO can be used as a surfactant sheet to emulsify organic solvents with water and disperse insoluble materials such as graphite and carbon nanotubes (CNTs) in water, which opens up opportunities for creating functional hybrid materials of graphene and other π-conjugated systems.

Стилі APA, Harvard, Vancouver, ISO та ін.

Tsuneta, Saku. "Solar Flares as an Ongoing Magnetic Reconnection Process." International Astronomical Union Colloquium 141 (1993): 239–48. http://dx.doi.org/10.1017/s025292110002916x.

Повний текст джерела

Анотація:

AbstractThe soft X-ray images taken by the Yohkoh Soft X-ray Telescope (SXT) provide a powerful new tool to solve the mechanism of solar flares. In particular, a limb flare that occurred on 1991, December 2 gives us convincing evidence that magnetic reconnection of a neutral sheet formed at the loop top participates in the flare energy release. The neutral sheet appears to be associated with a destabilized rising loop system (filament) sheared with respect to the flaring loop. Similar formations of X-ray arcades are seen in the quiet Sun associated with filament eruptions on much larger spatial dimension and with a much smaller energy scale.

Стилі APA, Harvard, Vancouver, ISO та ін.

Ren, Ziyu, Rongjing Zhang, Ren Hao Soon, Zemin Liu, Wenqi Hu, Patrick R. Onck, and Metin Sitti. "Soft-bodied adaptive multimodal locomotion strategies in fluid-filled confined spaces." Science Advances 7, no. 27 (June 2021): eabh2022. http://dx.doi.org/10.1126/sciadv.abh2022.

Повний текст джерела

Анотація:

Soft-bodied locomotion in fluid-filled confined spaces is critical for future wireless medical robots operating inside vessels, tubes, channels, and cavities of the human body, which are filled with stagnant or flowing biological fluids. However, the active soft-bodied locomotion is challenging to achieve when the robot size is comparable with the cross-sectional dimension of these confined spaces. Here, we propose various control and performance enhancement strategies to let the sheet-shaped soft millirobots achieve multimodal locomotion, including rolling, undulatory crawling, undulatory swimming, and helical surface crawling depending on different fluid-filled confined environments. With these locomotion modes, the sheet-shaped soft robot can navigate through straight or bent gaps with varying sizes, tortuous channels, and tubes with a flowing fluid inside. Such soft robot design along with its control and performance enhancement strategies are promising to be applied in future wireless soft medical robots inside various fluid-filled tight regions of the human body.

Стилі APA, Harvard, Vancouver, ISO та ін.

ZIAEEPOUR, HOURI. "COLOR GLASS CONDENSATE IN BRANE MODELS OR DON'T ULTRA HIGH ENERGY COSMIC RAYS PROBE 1015eV SCALE?" Modern Physics Letters A 20, no. 06 (February 28, 2005): 419–40. http://dx.doi.org/10.1142/s0217732305016646.

Повний текст джерела

Анотація:

In a previous work1 we have studied the propagation of relativistic particles in the bulk for some of the most popular brane models. Constraints have been put on the parameter space of these models by calculating the time delay due to propagation in the bulk of particles created during the interaction of Ultra High Energy Cosmic Rays (UHECRs) with protons in the terrestrial atmosphere. The question was, however, raised that probability of hard processes in which bulk modes can be produced is small and consequently, the tiny flux of UHECRs cannot constrain brane models. Here we use Color Glass Condensate (CGC) model to show that effects of extra dimensions are visible not only in hard processes when the incoming photon/parton hits a massive Kaluza–Klein mode but also through the modification of soft/semi-hard parton distribution. At classical level, for an observer in the CM frame of UHECR and atmospheric hadrons, color charge sources are contracted to a thin sheet with a width inversely proportional to the energy of the ultra energetic cosmic ray hadron and consequently they can see an extra dimension with comparable size. Due to QCD interaction, a short life swarm of partons is produced in front of the sheet and its partons can penetrate to the extra-dimension bulk. This reduces the effective density of partons on the brane or in a classical view creates a delay in the arrival of the most energetic particles if they are reflected back due to the warping of the bulk. In CGC approximation the density of swarm at different distances from the classical sheet can be related and therefore it is possible (at least formally) to determine the relative fraction of partons in the bulk and on the brane at different scales. Results of this work are also relevant to the test of brane models in hadron colliders like LHC.

Стилі APA, Harvard, Vancouver, ISO та ін.

Li, Yan, Lei Ni, Jing Ye, Zhixing Mei, and Jun Lin. "Particle Accelerations in a 2.5-dimensional Reconnecting Current Sheet in Turbulence." Astrophysical Journal 938, no. 1 (October 1, 2022): 24. http://dx.doi.org/10.3847/1538-4357/ac8b6d.

Повний текст джерела

Анотація:

Abstract Electric field induced in magnetic reconnection is an efficient mechanism for generating energetic particles, but the detailed role it plays is still an open question in solar flares. In this work, accelerations of particles in an evolving reconnecting current sheet are investigated via the test-particle approach, and the electromagnetic field is taken in a self-consistent fashion from a 2.5D numerical experiment for the magnetic reconnection process in the corona. The plasma instabilities like the tearing mode in the current sheet produce magnetic islands in the sheet, and island merging occurs as well. For the motion of the magnetic island, it yields the occurrence of the opposite electric field at both endpoints of the island; hence, tracking the accelerated particles around magnetic islands suggests that the parallel acceleration does not apparently impact the energy gain of particles, but the perpendicular acceleration does. Furthermore, our results indicate that the impact of the guide field on the trajectory of accelerated particles in a more realistic electromagnetic configuration works only on those particles that are energetic enough. The energy spectra of both species show a single power-law shape. The higher-energy component of the power-law spectrum results from the particles that are trapped in the current sheet, while the escaped and partly trapped particles contribute to the lower-energy component of the spectrum. The evolution of the spectrum shows a soft-hard-soft pattern that has been observed in flares.

Стилі APA, Harvard, Vancouver, ISO та ін.

Mat Nor, Ahmad Hakimi, Faizal Pakir, Muhammad Arif Azraei Izzudin, Salman Salim, Mohd Erwan Sanik, Masiri Kaamin, Mohd Firdaus Md Dan, and Mohd Khairy Burhanudin. "Stabilization of Soft Clay by Using Diapers Back Sheet Layer Wastes." MATEC Web of Conferences 250 (2018): 01015. http://dx.doi.org/10.1051/matecconf/201825001015.

Повний текст джерела

Анотація:

This research focus on improving the weaknesses of soft clay soils by using proper recycled material as a stabilization agent for strengthening purpose. Therefore, Diaper’s Back Sheet Layer Wastes (DBSLW) were used as the agent of soil stabilization. In this study, series of laboratory test were conducted to evaluate the optimum size and content of DBSLW as a strip reinforcement to increase the strength of Batu Pahat Soft Clay (BPSC). Testing program involves obtaining the physical properties of BPSC followed by California Bearing Ratio (CBR) test to determine the strength of BPSC with and without the addition of DBSLW. Result shows that the optimum size for DBSLW is 10 mm x 30 mm while the optimum content is 0.5%. At 15 mm penetration, sample with diapers strip of 10 mm x 30 mm dimension record 4.10 kN CBR value compare to 1.64 kN CBR value of untreated soil, 2.5 times stronger than untreated soil. Results of CBR tests demonstrated that inclusion of DBSLW strips in soil with optimum amounts and size improved strength and deformation behavior of soils substantially. The proposed technique could be used to advantage in road construction, industrial yards, and building structure.

Стилі APA, Harvard, Vancouver, ISO та ін.

Waeckerle, T., and M. Mekhiche. "Two dimensional magnetization model for anisotropic soft magnetic sheets." IEEE Transactions on Magnetics 30, no. 6 (1994): 4341–43. http://dx.doi.org/10.1109/20.334081.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Rauf, Ichsan, Tri Hrianto, and Kusnadi. "Laboratorium Experimental Of Cantilever Sheet Pile Behaviour On Soft Soil Induced By Strip Load." E3S Web of Conferences 328 (2021): 10020. http://dx.doi.org/10.1051/e3sconf/202132810020.

Повний текст джерела

Анотація:

This study aims to analyze the deflection behavior of the sheet pile through experimental testing and numerical analysis using the Finite Element Method (FEM). The Laboratorium scale test on a Tub with length of 1500 mm, width of 600 mm, and height of 1500 mm, and Steel Plate 3.2 mm with dimensions of 1400 mm x 590 mm was used as a model of the sheet pile wall. The subgrade material is clay soil and embankment material in the form of Sirtu which passes the No. sieve. 40. Physical and mechanical testing of soil and gravel materials is carried out with reference to ASTM standards. The measurement of the value of the strip load (q) and deflection was carried out using a load cell with a capacity of 100 kN and a linear variable differential transformer (LVDT). The deflection of the sheet pile was using was analyzed using Plaxis 8.2 software of the FEM method. The results of laboratory tests show that the pile wall collapses at a load of 74 kN/m2, with a deflection of 24.56 mm, while the FEM analysis shows that the pile wall collapses at a load of 71 kN/m2 with a deflection of 21.29 mm.

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Дисертації з теми "Soot sheet dimension"

Johansson, Henrik G. "Numerical simulation of two-dimensional Wolfhard-Parker burner." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-09182008-063155/.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Qamar, Nader H. "Sooting behaviour of turbulent non-premixed jet flames." Thesis, 2010. http://hdl.handle.net/2440/62616.

Повний текст джерела

Анотація:

Soot measurements using planar laser-induced incandescence (LII) have been performed in three commercial propane-fired flames produced by simple jet (SJ), precessing jet (PJ-P) and bluff-body jet (BB) burners. The flames span a wide range of different global mixing rates for the same nozzle diameter and fuel flow rate. Measurements of their radiation, NOₓ emissions and residence times are available. LII has also been performed in a natural gas-fired precessing jet (PJ-NG) flame with the same nozzle diameter and throat Reynolds number as the PJ-P and, in the well characterised “Delft III Flame” from the TNF workshop firing simulated Dutch natural gas. The PJ-P and the SJ have a similar time-averaged soot volume fraction, FV [F in italics & ¯ accented; V in italics & subscript], which is about an order of magnitude higher than in the BB and about 20 times higher than in the PJ-NG. The integrated total volume of soot, however, in the PJ-P is about 2.5 time higher than in the SJ, 25 times higher than in the PJ-NG and 220 times higher than in the BB. The axial location of the peak, time-averaged soot volume fraction, FV,max [F in italics & ¯ accented; V,max in italics & subscript], in the two propane flames issued from a long pipe, the SJ and the BB, are very similar when normalised to the flame length (x/Lfl≈0.6) [x/Lfl in italics; fl subscript] and consistent with other measurements in simple jet flames. The PJ-P and PJ-NG flames show much closer peaks at x/Lfl≈0.37 [x/Lfl in italics; fl subscript] and 0.53, respectively, also consistent with the peak heat flux in a precessing jet burner. When normalised to the length of the sooting part, the Delft flame shows a similar location of FV,max [F in italics & ¯ accented; V,max in italics & subscript] as the SJ and the BB. The soot in the Delft flame is highly intermittent with FV [F in italics & ¯ accented; V in italics & subscript] about 70 times less than in the SJ. The burnout of soot in the two propane flames issued from a long pipe, the SJ and the BB, and in the natural gas Delft flame, proceeds mainly by increasing intermittency, I [in italics], evident by the high instantaneous soot volume fraction, FV [F in italics; V in italics & subscript], and the high intermittency in the burnout region. In addition, the soot sheet dimensions do not vary significantly in the burnout region of these flames indicating that burnout proceeds by less number of soot sheets rather than a reduction in their dimensions. The burnout in the PJ-P proceeds by a different mechanism than the other turbulent flames, the asymptotic behaviour of I [in italics] and the low FV [F in italics; V in italics & subscript] reveal that the burnout in this flame is mainly due to low soot concentration. The reduction in the size of the soot sheets also indicate that both the dimensions of the sheets and the soot concentration within them drop in the burnout region. The distribution of the PDF of FV [F in italics; V in italics & subscript] in the five investigated flames is well characterised by an exponential function, with some departure at low FV [F in italics; V in italics & subscript]. The axial and radial distributions of the curve fitting parameters KP,F [K in italics; P,K in italics & subscript] and KP,O [K in italics; P,O in italics & subscript] of the exponential function for the Delft flame are presented. They were found mostly to vary smoothly with the axial height above the burner. The data provided on the well-defined Delft flame should be of great usefulness for model validation.
Thesis (Ph.D.) -- University of Adelaide, School of Chemical Engineering, 2010

Стилі APA, Harvard, Vancouver, ISO та ін.

Книги з теми "Soot sheet dimension"

Wheeler, Melissa Melissa. Live Simply: Music Sheet Notebook, Paper Dimension 6 X 9 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Harrold, Janice. Challenge?: Music Sheet Journal, Notebook, Diary, Dimension 6 X 9 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Hamilton, Kirk, and Cameron Hepburn. Conclusion. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198803720.003.0020.

Повний текст джерела

Анотація:

Investors regularly interrogate corporate balance sheets; citizens should be able to interrogate their national balance sheets in much the same way. This chapter advances the view that the widespread adoption of national wealth measures could soon become a reality if demand from key actors in policymaking and civil society is sustained. What would this mean for future policy directions? Just as there has long been a fixation on increasing the rate of GDP growth, it is plausible that the availability of national wealth measures could lead to calls for greater wealth. This would lead to a focus on policies different from those targeted at increasing output. As the concept and definition of national wealth become more established, six dimensions arise to drive policy and implementation questions such as this one. These dimensions are wealth measurement, composition, distribution, generation, management, and sustainability. This chapter considers the emerging questions and possible conclusions.

Стилі APA, Harvard, Vancouver, ISO та ін.

Publishing, W. P. Muscle Bound: Music Sheet Notebook, Paper Dimension 8. 5 X 11 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Publishing, W. P. In the Aquarium: Music Sheet Notebook, Paper Dimension 6 X 9 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Turnbull, Rebecca. Extraordinary Flavor: Music Sheet Journal, Notebook, Diary, Dimension 6 X 9 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Publishing, W. P. Be Bright: Music Sheet Notebook, Paper Dimension 8. 5 X 11 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Hayward, Melissa Melissa. 3 Shuttlecocks: Music Sheet Notebook, Journal, Paper Dimension 6 X 9 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Nicholson, Lucy Lucy. Fine Figure: Music Sheet Journal, Notebook, Diary, Dimension 6 X 9 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Publishing, W. P. Imagine Believe Achieve: Music Sheet Notebook, Paper Dimension 6 X 9 Inches, Soft Matte Cover. Independently Published, 2020.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Частини книг з теми "Soot sheet dimension"

deBuys, William. "Hawikku: Welcome to the Anthropocene." In A Great Aridness. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199778928.003.0016.

Повний текст джерела

Анотація:

History commenced for a large portion of North America on July 7, 1540. One may quibble over the dimension of territory affected, but the date is certain: it was duly written down, which is what distinguishes history, narrowly defined, from other ways of recording human experience. History is based on a documentary record; it begins when the documents start to pile up. On that July day nearly five centuries ago, a small army of Spaniards and Mexican Indians gathered before a stone village in what is now New Mexico and informed the residents thereof that henceforward they owed obedience to someone called the Pope and to the Catholic Sovereigns of Castile, in whom the Pope had entrusted authority over the bodies, souls, and lands of every person living on the islands and continent of the Mar Océano. This included the people of the stone village. No doubt these ideas sounded strange to their intended hearers, if indeed they were translated with the remotest accuracy. The intruders’ puzzling message was shouted out by someone who appeared to stare at a cloth, or a material similarly thin, flat, and flexible. It was a sheet of thick paper, nearly the size of one of the natives’ bison-hide shields. It bore many small marks, but no one from the village was close enough to observe this. Not that it mattered. The document asserting Spanish sovereignty over the village and its people was called the Requerimiento. Its purpose was to justify, in legal terms, the bloodshed and robbery that were soon to follow. An official of the Spanish host duly recited the entire document, which stipulated, on behalf of his commander, Captain-General Francisco Vásquez de Coronado, that if the natives failed to obey the commands of the Requerimiento, “I will make war against you everywhere and in every way I can. And I will subject you to the yoke and obedience of the Church and His Majesty. I will take your wives and children, and I will make them slaves. . . . I will take your property.

Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Soot sheet dimension"

Naka, Yoshitaka, Masaki Fuchiwaki, and Kazuhiro Tanaka. "Characteristics of Micro Pump Driven by Conducting Polymer Soft Actuator." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55117.

Повний текст джерела

Анотація:

The development of micro pumps are actively conducted in recent years. A micro pump used for μ-TAS transports at a micro flow rate with a high precision. Moreover, it is also needed to transport high-viscosity fluid since there are various types of drugs to be transported. Micro pumps with various driving systems have been developed so far. In this study, the authors propose a micro pump with soft actuators by conducting polymers as a driving source. We have realized the conducting polymer soft actuator with opening and closing movement. The opening and closing movement of the soft actuator in which the cation driving layer is arranged inside becomes large since the anion driving layer arranged outside drives predominantly. The opening and closing movement is realized by the characteristic that three dimensional deformations are suppressed by setting slits in a sheet-shaped soft actuator and straight-shaped soft actuators in the slits synchronize and deform. It is possible to build a micro pump that transports fluid in one direction by a micro pump with two soft actuators with opening and closing movement and that it can transport fluid even with the viscosity that is 140 times as large as that of water in addition. The micro pump with two soft actuators with opening and closing movement proposed in this paper transports fluid with an energy consumption rate less than half those of others.

Стилі APA, Harvard, Vancouver, ISO та ін.

Rabinovich, Oded, and Yeoshua Frostig. "High-Order Analysis of Unidirectional Sandwich Panels With Flat and Generally Piecewise Curved Faces and a “Soft” Core." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2037.

Повний текст джерела

Анотація:

Abstract The bending behavior of a unidirectional sandwich panel with flat and generally piecewise curved faces and a flexible core in the vertical direction is investigated. The studied panels consist of an upper flat face sheet, a core of a variable thickness, and a lower face sheet that can take any geometrical layout described by a piecewise analytical function. The core is assumed to be a two-dimensional elastic medium with vertical and shear rigidities only, and the faces are considered to have membrane and bending rigidities and are made of metallic or composite materials. The field equations and the boundary conditions are rigorously derived using the variational principle of virtual work. The continuity conditions between the various regions of the generally piecewise curved face are presented. Higher order effects in the form of nonlinear deformation distributions through the thickness due to flexibility of the core are incorporated in the proposed analysis. Numerical results in terms of deformations, stresses, and stress resultants are presented for some typical cases of piecewise flat-curved panels. The results demonstrate the capabilities and generality of the proposed model, especially in the ability to predict the high-order localized effects and the high stress concentrations that characterize these panels.

Стилі APA, Harvard, Vancouver, ISO та ін.

Malekzadeh, K., and M. R. Khalili. "Dynamic Response of Sandwich Panels With a Flexible Core Under Simultaneous Low-Velocity Impacts of Multiple Small Masses." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95774.

Повний текст джерела

Анотація:

Dynamic response of sandwich panels with a flexible core under simultaneous low-velocity impacts of multiple small masses has investigated in this paper. The contact forces between the panel and the impactors are treated as the internal forces of the system. Shear deformation theory is used for the face sheets while three dimensional elasticity is used for the soft core. The fully dynamic effects of the core layer and the face-sheets are considered in this study. The results in multiple mass impacts over sandwich panels are presented based on proposed improved higher-order sandwich plate theory (IHSAPT). As no literature could be found on the impact of multiple impactors over sandwich panels, the present formulation is validated indirectly by comparing the response of two cases of double small masses and single small mass impacts based on Olsson’s wave control principle.

Стилі APA, Harvard, Vancouver, ISO та ін.

Xiao, Lijun, Guodong Yu, Jibin Zou, Yongxiang Xu, Minghui Wang, and Han Yan. "A Novel Rotational Single Sheet Tester for Measurement and Modeling of Magnetic Properties of Soft Magnetic Materials Under Two-Dimensional Vector Magnetization." In 2018 21st International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2018. http://dx.doi.org/10.23919/icems.2018.8549463.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Böhm, S., G. J. Burger, M. T. Korthorst, and F. Roseboom. "A Silicon Micromachined Valve Driven by a Bi-Stable Electromagnetic Actuator." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0271.

Повний текст джерела

Анотація:

Abstract In this contribution a micromachined open/closed valve is presented which is driven by a conventionally manufactured bistable electromagnetic actuator. Basically the micromachined valve part, 7 × 7 × 1 mm3 in dimension, is a sandwich construction of two KOH etched wafers with a specially formulated silicone rubber layer in between. This rubber sheet forms a flexible flow path, which can be open and closed to control a fluid flow. In order to provide a large stroke of about 200 μm, a precision-engineered bi-stable electromagnetic actuator was selected. This actuator consists of a spring-biased armature that can move up and down in a magnetically soft iron housing, incorporating a permanent magnet and a coil. It will be shown that this combination of micromachined and precision-engineered components provides the required low dead volume on the one hand and a large actuator stroke on the other. Another benefit of the application of a bi-stable actuator is the fact that only energy is needed in order to switch between the open and closed state. Moreover, the large stroke makes the valve particle tolerant thus allowing media like cell suspensions and whole blood.

Стилі APA, Harvard, Vancouver, ISO та ін.

Yamane, Koji, Hiromitsu Sasaki, and Yuzuru Shimamoto. "A High-Pressure Pulsed Water Jet Cutting System by Means of Water Hammer in a Convergent Pipeline." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45286.

Повний текст джерела

Анотація:

One of the authors has developed a high-pressure fuel injection system using an oil hammer for diesel engines in 1993. In the present study, we applied this novel principle of the fuel injection system to the water-jet cutting system, and a pulsed water jet cutting system by means of water hammer in convergent pipeline caused by strong spool acceleration was developed. The system consisted of a pump having a small size plunger and spool, a convergent pipeline, and automatic injector having a hole-type nozzle with a small orifice. This pump, generating strong compression waves at the convergent pipeline inlet by strong acceleration of spool and plunger, is controlled by the low source oil pressure and electromagnetic valve. The wave propagated in the convergent pipeline is dynamically intensified by water hammering in the pipeline. High pressure is then developed at the nozzle. The injection pressure and injection frequency are fully controllable by the source pressure, and by the valve-opening frequency of the electromagnetic valve (EMPV). A computer simulation demonstrated that an operation and the injection pressure are satisfactory as a water jet cutting system. It is shown that a pressure of 140 MPa is obtained in nozzle inlet by a source pressure of 11.8MPa in experiments. The dimension of the nozzle orifice was determined by visualizing the spray origin using a laser-sheet imaging technique. Stagnation force and its spectrum of water jet on work was measured to evaluate effects of injection period and standoff distance on punching time and area. Practical feasibility of water jet cutting system was demonstrated by cutting/punching tests for soft/no-heating materials or metal plates and by paint removing tests.

Стилі APA, Harvard, Vancouver, ISO та ін.

Danzi, Francesco, Joshua Jenkins, Hongcheng Tao, and James M. Gibert. "Characterization of Nonlinear Kirigami Springs Through Transient Response." In ASME 2022 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/detc2022-93913.

Повний текст джерела

Анотація:

Abstract Kirigami is defined as the ancient Japanese art of cutting and folding paper to create three-dimensional structures, which is a subset of the larger term. Recent developments in kirigami-based structures have sparked interest in the engineering community for the development of mechanical metastructures with customized behavior such as negative Poisson’s ratio, out-of-plane buckling, and soft robot locomotion. In this manuscript, nonlinear springs based on kirigami are developed; the springs can be used to create customized nonlinear oscillators and vibration suppression systems. A Helmholtz-Duffing oscillator with nonlinear damping is created by attaching a mass to a smooth track with the kirigami springs attached to it. Kirigami springs were made by strategically cutting plastic sheets in predetermined patterns and arranging them in a ring. Identification of the unknown system parameters is accomplished through the use of a two-step procedure. To determine the quasi-static behavior of the spring, it was first subjected to tensile testing. These parameters serve as the foundation for developing a strategy for determining the unknown energy loss parameters in a system. In the second step, the Method of Multiple Scales is used to develop an approximate solution for the transient response, which is then tested. This solution is coupled with an optimization routine that, by modifying the unknown model parameters, seeks to reduce the error between the experimental free oscillations and the developed analytical solution as closely as possible.

Стилі APA, Harvard, Vancouver, ISO та ін.

Coemert, S., L. G. Wegener, B. Yalvac, J. Fuckner, and T. C. Lueth. "Experimental and FEM-Based Payload Analysis of Ti-6Al-4V Flexure Hinges." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10105.

Повний текст джерела

Анотація:

Abstract In this work, we investigated the effect of geometric parameters on the payload capacity of Ti-6Al-4V flexure hinges taking plastic deformation as a boundary failure criterion into account. Finite element and experimental analysis were performed in combination to increase the significance of the findings. For both simulations and experiments rectangular cross section flexure hinges were designed with varying thickness, length and width. While varying one of the parameters, the others were kept constant in order to see the individual influence of that particular parameter. The samples were fabricated using laser cutting of Ti-6Al-4V (Grade 5) metal sheets to ensure optimum dimensional accuracy. In the experimental procedure, the samples were fixed at the proximal end and exposed to gradually increasing vertical loads at the distal end by using weights. Simultaneously, they were exposed to a counteracting moment by pull-wire actuation attached on the tip to simulate the realistic actuation-loading behavior. For the sake of a uniform comparison of the samples with different dimensions, a state of equilibrium was defined such that the proximal and distal ends of the hinge were parallel. As soon as this state was achieved, the poses in each loading state were documented by a digital microscope for later postprocessing. On the other hand, the simulations were constructed in a way that permitted the experimental approach to be reflected in the simulation environment as realistically as possible. While performing a deformation-based simulation, the surface on which the payload was acting was blocked against rotation around the lateral axis so that the state of equilibrium could be maintained. The hinges were deflected with gradually increasing deformation in the vertical axis until 0.2% plastic strain occurred in the unloaded state. At this point the deformations in the vertical axis for both loaded and unloaded states were recorded to be compared with the experimental values. The forces leading to the deformation in the loaded state were calculated as output of the simulation and recorded as payload capacity. Consequently, the deformations obtained by analyzing the images captured during the experiments were compared and matched with the ones obtained from the simulations. The experimental loads leading to these deformations were recorded as experimental payload values. In the first step towards the evaluation of the results, payload values obtained from experiments and simulations were compared to check the consistency of the process. Subsequent to verifying the consistency, the effect of the geometric parameters on the payload progression was analyzed based on the simulation results. Nonlinear multidimensional regression was performed to come up with a design guideline which approximates the payload capacity based on the dimensional parameters. The proposed guideline estimates the payload value as proportional to width, inversely proportional to length and proportional to the 1.6th power of thickness.

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!