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SHAPE BIFURCATION OF AN ELASTIC WAFER DUE TO SURFACE STRESS 总被引:1,自引:0,他引:1
IntroductionSurfacestressisresponsibleformanymesoscopicalphenomenainmaterialsandthushasbeenstudiedextensively[1~ 5 ].Althoughtheabsolutevalueofsurfacestressofasolidcurrentlycannotbeobtainedbyexperiments,themethodformeasuringitschangehasbeenwellestablished .Theprincipleisratherclear.Whenthesurfacestressononesurfaceofawafer,eitherfreestandingorclampedatoneend ,changesduetocertainreasonssuchasadsorption ,thedifferencebetweenthesurfacestressonthissurfaceandthatontheoppositeoneresultsinabendingmom… 相似文献
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NONLINEAR BENDING OF SIMPLY SUPPORTED SYMMETRIC LAMINATED CROSS-PLY RECTANGULAR PLATES 总被引:4,自引:0,他引:4
Based on the von Kármán-type theory of plates,nonlinear bending problems of simplysupported symmetric laminated cross-ply rectangular plates under the combined action ofpressure and inplane load are investigated in this paper.The solution which satisfies thegoverning equations and boundary conditions is obtained by using the double Fourier seriesmethod. 相似文献
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基底上薄膜结构中的过大残余压应力常常通过屈曲不稳定性诱发薄膜结构和功能的失效。屈曲不稳定性、演化与斑图形成是近年来非线性力学研究的热点。此类屈曲不稳定性受薄膜-基底的力学性质以及界面相互作用影响,进而呈现出复杂的屈曲模式如褶皱、翘曲和折痕等。论文简要综述褶皱、翘曲和折痕等屈曲模式的形成机制、影响因素和后屈曲形貌相关方面的进展。褶皱部分,重点介绍了褶皱的形成、多级褶皱结构、局域化的褶皱、各向异性褶皱和曲面上的褶皱。翘曲部分,介绍了翘曲结构包括一维翘曲结构、“电话线”屈曲泡,网络状屈曲泡等的形成与生长过程,并讨论了曲面几何、界面滑移、开裂等因素的影响。折痕及其它复杂屈曲模式部分,介绍了折痕、叠痕及隆起失稳的形成机制与临界条件. 相似文献
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本文研究含非均匀界面相碳/碳纤维复合材料的热传导性质.将非均匀界面相近似模拟为由许多性质均匀的薄层构成的层状结构,并应用Mori-Tanaka平均场概念得到了该复合材料等效热传导系数封闭形式的解析解. 相似文献
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1.IntroductionAsakindofwidelyusedlowdensitymaterials,compositeconsistingofamatrixanddistributedhollowsphereshaveattractedIncreasingresearchinterest.Relatedworkswhicharefocusedonthetheoreticalpredictionof.theeffectiveelasticmoduliofsuchcompositescanbefoundinLeeandWestmannl'1,QiuandWengl=],HuangandGibsonl31aswellasChercauoietal.HI.HuangandGibson13]havealsocarriedoutanexperimentalinvestigationonmechanicalbehavioursofthecomposites.Thepresentpapercontinuestheseinvestigationsandisfocusedonfindi… 相似文献
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