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In this paper, the axisymmetric nonlinear stability of a clamped truncated shallow spherical shell with a nondeformable rigid body at the center under a concentrated load is investigated by use of the modified iteration method. The analytic formulas of second approximation for determining the upper and lower critical buckling loads are obtained. 相似文献
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In this paper, the axisymmetric nonlinear stability of a clamped truncated shallow spherical shell with a nondeformable rigid
body at the center under a concentrated load is investigated by use of the modified iteration method. The analytic formulas
of second approximation for determining the upper and lower critical buckling loads are obtained.
This paper was read at The Third East China Symposium on Solid Mechanics, Jiuhuashan, October, 1986. 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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In this paper,fundamental equations and boundary conditions of the nonlinearbending theory for a rectangular sandwicl plate with a soft core are derived by meansof the method of calculus of variations.Then the nonlinear bending for a simplysupported rectangular sandwich plate under the uniform lateral load is investigated byuse of the perturbation method and a quite accurate analytic solution is obtained. 相似文献
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矩形中厚板和夹层板的后屈曲 总被引:2,自引:2,他引:0
本文研究了矩形Reissner中厚板和夹层板的后屈曲特性。首先将矩形中厚板和夹层板的基本方程和边界条件表述成统一的无量纲形式。对不同的边界条件,特别是不对称边界条件,文中发展了一种应用于非线性分析的混合Fourier级数求解新方法,获得了级数形式的精确解。非线性偏微分方程化为无穷元非线性代数方程组,数值计算中截取有限项进行迭代求解。 相似文献
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POSTBUCKLINGBEHAViOROFRECTANGULARMODERATELYTHICKPLATESANDSANDWICHPLATESChengZhen-qiang(成振强)WangXiu-xi(王秀喜)HuangMao-guang(黄茂光)... 相似文献
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I.Intr0ducti0nThestudyofeffectivethermalconductivitiesofcompositesisaclassicaltopic.Theearlyresearcheswerec0ncernedmainIycompositesconsistingofisotropicphases,wheretheinterfacebetweentu'oconstituentswasassumedtobeperfect,i.e.,thetemperatureandheatfluxfiel… 相似文献
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集中载荷作用下开顶扁球壳的非线性稳定问题 总被引:3,自引:0,他引:3
本文使用修正迭代法研究了具有硬中心的边缘固定的开顶扁球壳在中心集中载荷作用下的轴对称非线性稳定问题,得到了决定上、下临界载荷的二次近似解析公式. 相似文献
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