共查询到20条相似文献,搜索用时 93 毫秒
1.
ONTHEEXISTENCEANDSTABILITYOFSOLUTIONFORSEMI-HOMOGENEOUSBOUNDARYVALUEPROBLEMDongQinxi(董勤喜);HuangXiankai(黄先开)(ReceivedJuly.4.19... 相似文献
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THE PROBLEMS OF THE NONLINEAR UNSYMMETRICAL BENDING FOR CYLINDRICALLY ORTHOTROPIC CIRCULAR PLATE(II)
THEPROBLEMSOFTHENONLINEARUNSYMMETRICAL.BENDINGFORCYLINDRICALLYORTHOTROPICCIRCULARPLATE(II)HuangJiayin(黄家寅);QinShengli(秦圣立);Xi... 相似文献
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THEANALYSISOFSTABILITYOFBINGHAMFLUIDFLOWINGDOWNANINCLINEDPLANEWangPeiguang(王培光);WangZhendong(王振东)(ReceivedDec.1.1994;Communic... 相似文献
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EFFECTOFMAGNETICFIELDSONVISCOUSLIQUIDCOLUMNWITHFINITELENGTHINAVERTICALSTRAIGHTTUBEWenGong-bi(温功碧);SunKe-li(孙克利)(DepartmentofM... 相似文献
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(黄家寅)(秦圣立)THEPROBLEMSOFNONLINEARBENDINGFORORTHOTROPICRECTANGULARPLATEWITHFOURCLAMPEDEDGES¥HuangJiayin;QinShengli(QufuNormalUn... 相似文献
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SOLVINGTHEFREEBOUNDARYPROBLEMINCONTINUOUSCASTINGBYUSINGBOUNDARYELEMENTMETHODLiYaoyong(李耀勇);ZhangZhili(张自立)(ReceivedJune,18,19... 相似文献
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SOLVINGVIBRATIONPROBLEMOFTHINPLATESUSINGINTEGRALEQUATIONMETHOD¥(许明田,程德林)XuMingtian;ChengDelin(Department.ofMathematicsandPhysi... 相似文献
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苏铭德 《应用数学和力学(英文版)》1994,15(11):1047-1053
THEEXAMINATIONOFTURBULENCEMODELINGWITHLESDATABASESuMing-de(苏铭德)(QinghuaUniversity,Beijing)R.Friedrich(LehrsirhlfurFluidsmecha... 相似文献
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3-DNUMERICALSTUDYONTHEBENDINGOFSYMMETRICCOMPOSITELAMINATESChienWei-zang(钱伟长);HuangQian(黄默);FengWei(冯伟)(ShanghaiUniverstyofTec... 相似文献
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沃国纬 《应用数学和力学(英文版)》1994,15(10):989-996
ANELASTICITYSOLUTIONOFANONHOMOGENEOUSHALF-PLANEPROBLEMWoGuo-wei(沃国纬)(ShanghaiJiaotongUniversity.Shanghai)(ReceivedJan.5.1994:... 相似文献
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受轴向冲击有限长弹性直杆中应力波引起的分叉问题 总被引:7,自引:1,他引:6
研究了有限长理想直杆受阶跃载荷作用的弹性动力屈曲问题。将直杆的屈问题归结为由轴向应力波传播而导致的杆的分叉问题,并考虑了应力波反射的影响。给出了分叉发生的临界条件并对具体实例进行了计算。最后对阶跃载荷及脉冲载荷对杆的动力屈曲的影响进行了讨论。 相似文献
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In this paper, the dynamic buckling of an elastic-plastic column is studied. Let its dynamic buckling under step load be reduced
to a bifurcation problem caused by the propagation of axial elastic-plastic stress wave. The critical buckling condition is
given and the reflection of the elastic-plastic stress wave is taken into consideration. In the end, numerical computation
and conclusions are presented and obtained.
Foundation item: the National Natural Science Foundation of China (19672038) 相似文献
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讨论弹性圆柱壳端部受冲击载荷作用,在应力波传播过程中的非对称屈曲问题。通过求解扰动方程得到了动态屈曲的分叉条件、临界载荷和屈曲模态。数值结果表明,当壳壁厚不很薄时,轴对称屈曲临界载荷比非对称临界载荷高;反之,轴对称临界载荷会比非对称临界载荷低。不同的冲击载荷,屈曲模态也将不同。 相似文献
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在轴向应力波传播和反射过程中弹性有限长圆柱壳非对称动态屈曲 总被引:2,自引:0,他引:2
本文讨论弹性有限长圆柱壳端部受冲击载荷作用,在轴向应力波传播和反射过程中的非对称动态屈曲问题。通过建立和求解扰动方程得到了动态屈曲的分叉条件,临界载荷和屈曲模态。数值结果表明:当壳壁厚不很薄时,轴对称屈曲临界载荷比非轴对称临界载荷高;反之,轴对称临界载荷会比非对称临界载荷低;由于应力波的反射,临界载荷降低,因而更容易发生屈曲,屈曲模态也有其不同特点。 相似文献
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Hans Obrecht 《International Journal of Solids and Structures》1977,13(4):337-355
An infinitely long, axially compressed, circular cylindrical shell with an imperfection in the shape of the axisymmetric classical buckling mode, undergoing steady or non-steady creep, is analyzed. The axisymmetric problem is solved incrementally using nonlinear shell equations The ratio of the applied stress to the classical buckling stress determines if the shell will collapse axisymmetrically or if it will bifurcate into a nonaxisymmetric mode, and whether or not bifurcation will result in instantaneous collapse. The bifurcation problem is formulated exactly and the initial postbuckling behavior is investigated via an asymptotic elastic analysis, based on Koiter's general theory Numerical results are compared with available experimental data. 相似文献
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The buckling modes of a homogeneously compressed elastic plate on a soft elastic substrate are studied. The critical compression is uniquely determined by the bifurcation equation, but this compression is associated with a wide set of buckling modes. It was proved that any solution of the Helmholtz equation satisfies the bifurcation equation. At the same time, in microelectronics, it is required to know which buckling mode is realized. Experimental and theoretical investigations show that the chessboard-like buckling mode should be expected. In what follows, this problem is discussed theoretically. The expected buckling mode can be found by analyzing the energy of the initial postcritical deformation, and the desired mode is determined from the condition of its minimum. The analytic expression of this energy is obtained. Its minimization results in the chessboard-like buckling mode. 相似文献
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理想直杆中轴向应力波的传播和反射导致的分叉问题 总被引:3,自引:1,他引:2
对阶跃载荷作用下弹性理想完善直杆中应力波的传播及其反射引起民的分叉问题进行了理论分析和数值计算,讨论了此类动力屈曲问题中横向惯性效应的影响;给出了一种进行后分叉分析的近似方法,得到了一些结论,在各类结构由于应力波的传播及反射引起的分叉问题具有指导意义。 相似文献