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Dissertations / Theses on the topic 'Plates'

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Published: 4 June 2021
Last updated: 25 July 2025

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1

Paulos, Yonas Kinfu. "Sedimentation between parallel plates." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30055.

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Settling basins can be shortened by using a stack of horizontal parallel plates which develop boundary layers in which sedimentation can occur. The purpose of this study is to examine the design parameters for such a system and to apply this approach to a fish rearing channel in which settling length is strictly limited. Flow between parallel rough and smooth plates has been modelled together with sediment concentration profile. Accurate description of boundary layer flow requires the solution of Navier-Stokes equations, and due to the complexity of the equations to be solved for turbulent fl
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2

Ho, Wai Yiu. "License Plate Recognition algorithms and their application to Macao license plates." Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2182850.

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3

Жигилій, Дмитро Олексійович, Дмитрий Алексеевич Жигилий, Dmytro Oleksiiovych Zhyhylii, Володимир Андрійович Хворост, Владимир Андреевич Хворост, and Volodymyr Andriiovych Khvorost. "Laminated composite plates." Thesis, Видавництво СумДУ, 2004. http://essuir.sumdu.edu.ua/handle/123456789/22944.

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4

Lyrio, Mariana Camilo Negreiros 1980. "Analise mecanica e fotoelastica das tecnica de fixação interna rigida da osteotomia sagital utilizando placa convencional e placa com sistema de travamento em avanços mandibulares." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287896.

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Orientadores: Marcio de Moraes, Luciana Asprino<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-13T02:18:28Z (GMT). No. of bitstreams: 1 Lyrio_MarianaCamiloNegreiros_M.pdf: 2393437 bytes, checksum: f0dfbf68baaeb080347c83445d15e1e9 (MD5) Previous issue date: 2009<br>Resumo: O propósito neste estudo foi realizar avaliação mecânica e fotoelástica de dois diferentes sistemas de fixação interna rígida (FIR): placas convencionais e placas com sistema de travamento. Para avaliação mecânica foi realizado tes
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5

Yin, Jianfei. "Structure-borne sound transmission between isotropic, homogeneous plates and periodic ribbed plates." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/8193/.

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The prediction of sound and vibration transmission in built-up structures is important for human comfort, health and safety. For structural reasons, engineering structures often incorporate periodic ribbed plates to increase stiffness and stability whilst reducing the weight. However, vibration propagation on periodic ribbed plates is complex due to the existence of stop/pass bands. This thesis is concerned with predicting vibration transmission between isotropic, homogeneous plates and periodic ribbed plates. The objectives are to investigate the use of Statistical Energy Analysis (SEA) and d
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6

Waddell, John M. "Scattering from rough plates." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA304997.

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7

Price, Gareth James. "Microchannel plates in astronomy." Thesis, University of Leicester, 2001. http://hdl.handle.net/2381/8638.

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This thesis describes both round-pore microchannel plates (MCPs) used in energetic pho¬ton and particle detectors and their square-pore offspring, micropore optics (MPOs), used to focus x-rays. A Monte Carlo electron raytracing software package is described that is used to predict the energy and angular distribution of electrons (EDOE and ADOE) in a microchannel electron multiplier's output charge cloud, including saturated operation. The model is shown to agree with experimental evidence. The addition of a micromachined electrostatic lens to the end of a microchannel is modelled and found to
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8

Martinsson, Johan. "Wear of Grate Plates." Thesis, KTH, Materialvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-160603.

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This report describe the wear of the protruding areas on the sides of the grate plates in the grate-kiln process in the hematite pellet production in LKAB, Kiruna. The steel plates are exposed to a hostile environment with heat cycles and corrosive atmosphere. An evaluation of the plates was made in co-operation with LKAB Metlab in Luleå and LKAB mechanical workshop in Kiruna. Instruments used are stereomicroscope, LOM, SEM, Spectroscope, Vickers Hardness and a surface nish meter. Results show the protruding areas of the plates are exposed to a tribochemical wear, where tops of the rough areas
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9

Fletcher, Michael. "Plumes, Plates and Porphyries." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/28474.

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This study developed an automated approach to understand plume and plate boundary interactions over time, investigating how flat slab and porphyry development are linked to formation mechanisms of major eastern Pacific Large Igneous Provinces (LIPs). Our method allows us to detail how the Shatsky-Hess conjugate collided with North America from 85 Ma, with the subducting front corresponding to porphyry development and matching divisions between shallow and flat slab areas. Our new formation model for the Enigma Ridge, conjugate to the Tuamotu Plateau, resolves problems for development of the Pe
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10

Datta, Sripati. "Some linear and nonlinear problems of thin elastic plates placed on elastic foundation." Thesis, University of North Bengal, 1999. http://ir.nbu.ac.in/handle/123456789/664.

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11

El-Yabroudi, Joseph A. "A study of the effect of oil added to Toray driographic ink on toning in the non-image areas of Toray company's negative working driographic plates /." Online version of thesis, 1989. http://hdl.handle.net/1850/10434.

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12

Yuan, Lisha. "Optimum First Failure Loads of Sandwich Plates/Shells and Vibrations of Incompressible Material Plates." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/102664.

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Due to high specific strength and stiffness as well as outstanding energy-absorption characteristics, sandwich structures are extensively used in aircraft, aerospace, automobile, and marine industries. With the objective of finding lightweight blast-resistant sandwich structures for protecting infrastructure, we have found, for a fixed areal mass density, one- or two-core doubly-curved sandwich shell's (plate's) geometries and materials and fiber angles of unidirectional fiber-reinforced face sheets for it to have the maximum first failure load under quasistatic (blast) loads. The analyses e
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13

Elmir, Chady. "Constante systolique et variétés plates." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2009. http://tel.archives-ouvertes.fr/tel-00439914.

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Dans cette thèse on étudie la géométrie systolique des variétés de Bieberbach. La \emph{systole} d'une variété riemannienne compacte et non simplement connexe $(M^n,g)$ est l'infimum des longueurs des courbes fermées non contractiles; le \emph{rapport systolique} est le quotient $(\mathrm{systole})^n/\mathrm{volume}$. Un résultat fondamental de Gromov assure que si $M^n$ est essentielle, il existe une constante $c(M)$ strictement positive telle que, pour toute métrique $g$ sur $M^n$: $Vol(M,g) \geq c(M) Sys(M,g)^n$. Les surfaces compactes autres que $S^2$ sont essentielles, et le théorème de G
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14

Solov'ëv, Sergey I. "Vibrations of plates with masses." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200601375.

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This paper presents the investigation of the nonlinear eigenvalue problem describing free vibrations of plates with elastically attached masses. We study properties of eigenvalues and eigenfunctions and prove the existence theorem. Theoretical results are illustrated by numerical experiments.
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15

Cobb, William Geoffrey Carnie. "Optimum holes in flat plates." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/38262.

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16

Bellur, Ramaswamy Ravi Shankar. "Optimal design of stiffened plates." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0017/MQ45871.pdf.

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17

Ahmed, Hesham. "Parametric buckling analyses of plates." Thesis, Oxford Brookes University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616317.

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Classical methods for solving plate buckling problems involve using different forms of solution on case by case basis. In place of this approach, This thesis presents a novel single form equation and the parameters required to account for the interaction of geometry, boundary conditions and different forms of edge load distribution. The thesis also presents more results for different combination of plate edge boundary conditions than can be found in most design manuals such as the ESDD. The method presented is titled 'Parametric Buckling Analysis (PBA),. It combines a number of concepts in a h
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18

Malagon, Samuel A. "Chladni Figures through Vibrating Plates." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/cmc_theses/1203.

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In this paper, we examine a method on how to model and produce Chladni Figures. We walk through how a thin metal plate, when vibrating at certain frequencies, can create various interest patterns. First we discuss the equation for the vertical force exerted on the plate, then we derive a PDE to solve for the nodal lines (lines that remain fixed, while the rest of the plate is oscillating). And, discuss how to create and model these figures, through a finite difference method. There have been several experiments on Chladni Figures, using some sort of vibrating membrane or plate and then either
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19

Putra, Azma. "Sound radiation from perforated plates." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/63161/.

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Perforated plates are quite often used as a means of engineering noise control to reduce the sound radiated by structures. However, there appears to be a lack of representative models to determine the sound radiation from a perforated plate. The aim of this thesis is to develop such a model that can be used to give quantitative guidance corresponding to the design and effectiveness of this noise control measure. Following an assessment of various models for the radiation efficiency of an unbaffled plate, Laulagnet’s model is implemented. Results are calculated and compared with those for baffl
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20

Jeong, Han Koo. "Reliability of laminated composite plates." Thesis, University of Southampton, 1999. https://eprints.soton.ac.uk/21869/.

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This thesis deals with reliability analysis of laminated composite plates subjected to transverse lateral pressure loads. Input parameters to strengths of the plates such as applied transverse lateral pressure loads, elastic moduli, geometric and ultimate strength values of the plates are treated as basic design variables, and specific probability distributions are applied to them to take into account the variability nature of these basic design variables. Based on the statistical information on the basic design variables, these variables are pseudo-randomly generated in accordance with the co
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21

Yeadon, Alan (Alan John Welsford) Carleton University Dissertation Engineering Mechanical and Aerospace. "Axially compressible fracture fixation plates." Ottawa, 1996.

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22

Rückert, Jens, and Arnd Meyer. "Kirchhoff Plates and Large Deformation." Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-96896.

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In the simulation of deformations of plates it is well known that we have to use a special treatment of the thickness dependence. Therewith we achieve a reduction of dimension from 3D to 2D. For linear elasticity and small deformations several techniques are well established to handle the reduction of dimension and achieve acceptable numerical results. In the case of large deformations of plates with non-linear material behaviour there exist different problems. For example the analytical integration over the thickness of the plate is not possible due to the non-linearities arising from the mat
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23

CHAKRABARTI, SEKHAR KUMAR. "INELASTIC BUCKLING OF GUSSET PLATES." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184188.

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The strength and behavior of gusset plates in buckling is evaluated herein based on data from the experimental investigations conducted by other researchers and the analytical work presented herein. A set of design guidelines has been recommended through the review of the current practice. Representative single and double brace gusset plates normally adopted for connections with compressive bracing/diagonal members in braced frames and trusses, were modeled and analyzed using linear and nonlinear finite element methods to determine the buckling loads. The buckling analysis data along with the
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24

Lumpp, Dirk Manfred. "An experimental investigation of circular plates, beams and stiffened circular plates subjected to impulsive loading." Master's thesis, University of Cape Town, 1991. http://hdl.handle.net/11427/9658.

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Bibliography: leaves 94-96.<br>This primarily experimental investigation describes a series of experiments on fully-clamped circular plates, rectangular beams and stiffened circular plates. These test specimens were subjected to a uniformly distributed impulse. The impulse was provided by plastic explosive. This was arranged in such a way that a uniformly distributed impulse was imparted to the test specimens. The impulse was measured by means of a ballistic pendulum to which the test specimens were attached. The final mid-point deflections of the plates and beams were measured. The plate and
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25

Jarocha-Ernst, Alex. "Creating landscapes with simulated colliding plates /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/1962.

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26

Mürk, Annely. "Optimization of inelastic plates with cracks /." Online version, 2006. http://dspace.utlib.ee/dspace/bitstream/10062/1226/5/murkannely.pdf.

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27

Grytten, Frode. "Low-Velocity Penetration of Aluminium Plates." Doctoral thesis, Norwegian University of Science and Technology, Department of Structural Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2123.

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<p>The present thesis describes research on quasi-static and low velocity perforation of rolled aluminium plates, where the main objective has been to gain a better knowledge of the physical processes taking place during this type of structural problem. The objective has been met by a combination of laboratory tests, material modelling and non-linear finite element simulations.</p><p>The thesis is organized in a synopsis, giving a brief introduction to the problem and summarising the main findings and conclusions, in addition to four independent papers. </p><p>Paper I presents an experimental
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28

Deniz, Tansel. "Ballistic Penetration Of Hardened Steel Plates." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613534/index.pdf.

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Ballistic testing is a vital part of the armor design. However, it is impossible to test every condition and it is necessary to limit the number of tests to cut huge costs. With the intro- duction of hydrocodes and high performance computers<br>there is an increasing interest on simulation studies to cutoff these aforementioned costs. This study deals with the numerical modeling of ballistic impact phenomena, regarding the ballistic penetration of hardened steel plates by 7.62 mm AP (Armor Piercing) projectile. Penetration processes of AP projectiles are reviewed. Then, a survey on analytical
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29

Mseikeh, Camille Hanna. "Wrinkling of membranes, plates, and shells." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30343.pdf.

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30

Sheikh, Imtiaz Ali. "Stiffener tripping in stiffened steel plates." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ60496.pdf.

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31

Oglesby, Keith Andrew. "Acoustic design optimization of thin plates." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/16375.

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32

Israr, Asif. "Vibration analysis of cracked aluminium plates." Thesis, University of Glasgow, 2008. http://theses.gla.ac.uk/261/.

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This research is concerned with analytical modelling of the effects of cracks in structural plates and panels within aerospace systems such as aeroplane fuselage, wing, and tail-plane structures, and, as such, is part of a larger body of research into damage detection methodologies in such systems. This study is based on generating a so-called reduced order analytical model of the behaviour of the plate panel, within which a crack with some arbitrary characteristics is present, and which is subjected to a force that causes it to vibrate. In practice such a scenario is potentially extremely dan
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33

Doshi, Nisha. "Colloidal mixtures of spheres and plates." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.559381.

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In this thesis we report on a system of colloidal plates and spheres developed to model the key particles found in paint and other industrial formulations. From theories of mixtures of particles of different shapes and sizes one would expect entropic phase sep- aration to occur at sufficiently high volume fractions, due to the gains in free volume. An aqueous system consisting of synthetic nano-gibbsite Al(OHh plates and alumina coated silica nano-spheres were sterically stabilized with a commercial stabiliser in wa- ter to create near-hard particle interactions. The stabilizer was chosen, by
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34

Smith, R. Sean. "Sound transmission through lightweight parallel plates." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/1290.

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This thesis examines the transmission of sound through lightweight parallel plates, (plasterboard double wall partitions and timber floors). Statistical energy analysis was used to assess the importance of individual transmission paths and to determine the overall performance. Several different theoretical models were developed, the choice depending on the frequency range of interest and method of attachment of the plates, whether point or line, to the structural frame. It was found that for a line connected double wall there was very good agreement between the measured and predicted results,
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35

Nkemzi, D. "Dynamics of elastic/viscoelastic sandwich plates." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334951.

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36

Lazarus, Kenneth B. "Induced strain actuation of composite plates." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/41235.

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37

Souza, Carlos Eduardo de. "Nonlinear aeroelasticity of composite flat plates." Instituto Tecnológico de Aeronáutica, 2012. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2243.

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This work presents a study on aeroelastic analyses of composite laminated flat plates subject to large displacements through the coupling of a nonlinear corotational shell finite element (FE) with an unsteady vortex-lattice method (UVLM) formulation. A FE implemented for the analysis of flat plates has been extended to model laminated composites with different lamina orientations. An UVLM formulation that is capable of coupling with this large displacement structural model is implemented. An explicit partitioned method is evaluated for the coupling of both models, using spline functions to in
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38

Simelane, Philemon Sphiwe. "Thermal buckling of laminated composite plates." Thesis, Peninsula Technikon, 1998. http://hdl.handle.net/20.500.11838/1240.

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Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, 1998<br>However, studies were also conducted for the buckling of composite laminates involving temperature distribution. Chen and Chen (1991) studied thermal buckling of laminated plates under uniform and nonuniform temperature distribution using the eight-node Serendipity finite element. Mathew, Singh and Rao (1992) investigated thermal buckling of antisymmetric cross-ply composite laminates with a onedimensional furite element having two nodes and six degrees of freedom. Chandrashekhara (1992) accounted for transverse shear
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39

Zafindratafa, Georges. "Autour des sous-variétés conformément plates." Lyon 1, 1992. http://www.theses.fr/1992LYO10093.

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Apres avoir fait des rappels aux chapitres 1 et 2, nous donnons une condition necessaire et suffisante pour qu'une variete a courbure scalaire nulle et de dimension quatre soit conformement plate; et nous etudions la caracteristique d'euler de cette variete. Au chapitre 4, nous montrons qu'une sous-variete conformement plate de petite codimension est generiquement fortement feuilletee par des spheres. Le chapitre 5 est consacre a l'etude des deux champs associes a une sous-variete quasi ombilicale. Au chapitre 6, nous obtenons une nouvelle definition (en termes de points focaux) de la quasi-om
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40

Tian, Haitao. "Taylor meshless method for thin plates." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0036.

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Une nouvelle classe de méthodes sans maillage - Taylor Meshless Method (TMM) - a été introduite. Elle repose sur une solution explicite des équations aux dérivées partielles dans le domaine à l’aide des extensions de séries de Taylor. Parce que la PDE est résolue analytiquement dans le domaine, on est réduit à un problème de frontière discret dont la taille est plutôt petite.L’efficacité de TMM a été vérifiée en résolvant certaines équations aux dérivées partielles. Dans les cas étudiés, TMM est robuste et efficace. Pour les problèmes linéaires 2D, un domaine suffit pour résoudre les problèmes
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Tiwari, Nachiketa. "Secondary Buckling of Laminated Composite Plates." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/37789.

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The postbuckling load carrying capacity of composite plates offers immense potential to their applications for loads exceeding their primary buckling load. However, such an efficient and economical usage of these plates can be reliable only if the nonlinear postbuckling behavior of these plates, which includes a good understanding of secondary buckling, is understood thoroughly. The present investigation is an attempt to understand secondary buckling of almost square composite clamped-simply supported plates, both unstiffened as well as stiffened, in some detail. With the help of the finite e
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42

Wood, Harrison Grant. "Bending and warpage of elastic plates." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/90576.

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This thesis presents two studies on elastic plates. In the first study, we discuss the choice of elastic energies for thin plates and shells, an unsettled issue with consequences for much recent modeling of soft matter. Through consideration of simple deformations of a thin body in the plane, we demonstrate that four bulk isotropic quadratic elastic theories have fundamentally different predictions with regard to bending behavior. At finite thickness, these qualitative effects persist near the limit of mid-surface isometry, and not all theories predict an isometric ground state. We discuss ho
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Estrada, Beltrán Héctor Andrés. "Ultrasonic transmission through periodically perforated plates." Doctoral thesis, Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/14119.

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Las estructuras periódicas macroscópicas han sido objeto de una intensa investigación durante las dos últimas décadas debido a su capacidad de imitar fenómenos ondulatorios que son inherentes a la escala atómica. Aunque las placas perforadas son estructuras muy comunes en acústica, éstas parecen guardar propiedades de transmisión de sonido inexploradas, cuyo estudio ha sido impulsado por el descubrimiento de la Transmisión Óptica Extraordinaria en láminas de metal perforadas con agujeros distribuidos periódicamente cuando interactúan con la luz. En el presente trabajo se muestra que las plac
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44

Moorthy, Jayashree. "Dynamic instability of composite laminated plates." Thesis, Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/52090.

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Dynamic instability in a laminated composite plate is studied using the finite element technique. The governing equations are derived based on the first order shear deformation theory with a linear strain-displacement relationship. The regions of instability for the resulting set of coupled Mathieu equations are obtained using a method of simultaneous diagonalization. Boundary frequencies generated using a first subdeterminant approximation to the infinite determinant are compared with those obtained by using the more accurate second subdeterminant as well as with frequencies from an analytica
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Da, silva seco Laura. "Column base plates under 3D loading." Thesis, Rennes, INSA, 2019. http://www.theses.fr/2019ISAR0009.

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Les pieds de poteaux ont une influence prépondérante sur la stabilité et la rigidité des charpentes métalliques. Cette thèse porte sur la résistance des pieds de poteaux par platine soumis à un effort normal et un moment bi-axial. Les pieds de poteaux étudiés sont composés d’une platine soudée à l’extrémité du poteau et reliée au bloc béton par 4 tiges. Dans le chapitre II, une étude bibliographique dresse un bilan des modèles permettant de calculer la résistance de ce type d’assemblage ainsi que des résultats d’essais. Le chapitre III est ensuite dédié à la description et l’analyse des résult
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Jowhari, Moghadam Shirin. "Plastic buckling of columns and plates." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/29865.

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The theory of buckling strength of compression members in the plastic range has been extensively studied, and numerical methods already exist which deal with such behaviour. However, there is a significant research interest in developing analytical models for the plastic buckling, largely driven by the need for simplified mechanics based design tools, but also by the desire for enhanced understanding of this complex phenomenon. A thorough investigation into the inelastic buckling of columns and plates reveals the existence of two well-known inconsistencies recognised as the 'Column Paradox' an
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Guo, Ying. "Investigation of perforated mufflers and plates." Stockholm : Skolan för teknikvetenskap, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10170.

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48

González, Diana Maritza Contreras. "Avaliação in vitro da resistência de três tipos de fixação para tratamento de fraturas de ângulo mandibular." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/58/58136/tde-13042015-093719/.

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As fraturas do ângulo mandibular são muito frequentes dentre as fraturas mandibulares e um das formas de tratamento é a utilização de fixação interna com placas e parafusos. Neste estudo o objetivo foi avaliar comparativamente a resistência de três tipos de fixação em réplicas de mandíbula de poliuretano. Foram utilizadas 63 mandíbulas dentadas, submetidas a seccionamento simulando uma fratura linear e desfavorável de ângulo mandibular esquerdo. As fixações foram realizadas com placas do sistema 2,0 mm, dispostas da seguinte forma: uma placa reta de quatro furos, uma placa reta de quatro furos
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49

Williams, Gordon Colin. "An experimental study of instability in square plates twisted by corner forces." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28527.

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An experimental study is presented on the non-linear twisting of plates with free edges, through the application of self-equilibrating corner loads. A simple apparatus was designed and various sizes of plates were twisted while measuring the surface strains on both sides at the centre. Initial difficulty was encountered due to unwanted deflection of the plate under its own weight. The Rayleigh-Ritz method is used to determine an analytical relationship between midsurface strains and curvatures in the pre- and post-bifurcation regions of twisting. In both the experimental and analytical resul
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50

Chang, Kao-Liang, and 張國亮. "Vibration Analysis of Plates by Plate-Type Dynamic Vibration." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/88008829251486836923.

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碩士<br>國立中央大學<br>機械工程學系<br>86<br>In this paper,a plate-type dynamic vibration absorber is presented for behaviorof vibration of mainplate under random excitation and impact excitation,which boundary condition is simple supported.This system consists of a dynamic absorbing plate under free boundary condition as the main plate and with uniformly distributed connecting springs and dampersbetween the main and dynamic absorbing plates.By way of defection of mean squareresponse minimum we can obta
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