An analysis of the post-buckling of laminated plates of symmetric cross-ply

ＡＮＡＮＡＬＹＳＩＳＯＦＴＨＥＰＯＳＴ－ＢＵＣＫＬＩＮＧＯＦＬＡＭＩＮＡＴＥＤＰＬＡＴＥＳＯＦＳＹＭＭＥＴＲＩＣＣＲＯＳＳ－ＰＬＹＷｅｎｇＺｏｎｇｙｉ（翁宗诒）（ＲｅｃｅｉｖｅｄＭａｒｃｈ６,１９９５,ＣｏｍｍｕｎｉｃａｔｅｄｂｙＺｈｏｕＣｈｅｎｇｔ...     

Sensitivity analysis of composite laminated plates with bonding imperfection in Hamilton system

Sensitivity analysis of composite laminated plates with bonding imperfection is carried out based on the radial point interpolation method （RPIM） in a Hamilton system. A set of hybrid governing equations of response and sensitivity quantities is reduced using the spring-layer model and the modified Hellinger-Reissner （H-R） variational principle. The analytical method （AM）, the semi-analytical method （SAM）, and the finite difference method （FDM） are used for sensitivity analysis based on the reduced set of hybrid governing equations. A major advantage of the hybrid governing equations is that the convolution algorithm is avoided in sensitivity analysis. In addition, sensitivity analysis using this set of hybrid governing equations can obtain response values and sensitivity coefficients simultaneously, and accounts for bonding imperfection of composite laminated plates.     

Influence of initial imperfection and coupling between bending and extension on vibration, buckling and nonlinear dynamic stability of laminated plates

ＩｎｔｒｏｄｕｃｔｉｏｎＣｏｕｐｌｉｎｇｂｅｔｗｅｎｂｅｎｄｉｎｇ＿ｅｘｔｅｎｓｉｏｎｃａｕｓｅｄｂｙｌａｍｉｎａｔｅｍａｔｅｒｉａｌａｎｄ／ｏｒｇｅｏｍｅｔｒｉｃａｌａｓｙｍｍｅｔｒｙａｂｏｕｔｌａｍｉｎａｔｅｍｉｄｄｌｅｓｕｒｆａｃｅｉｓｋｎｏｗ...     

Nonlinear free vibration analysis of piezoelastic laminated plates with interface damage

This paper presents a nonlinear model for piezoelastic laminated plates with damage effect of the intra-layers and inter-laminar interfaces. Discontinuity of displacement and electric potential on the interfaces are depicted by three shape functions. By using the Hamilton variation principle, the three-dimensional nonlinear dynamic equations of piezoelastic laminated plates with damage effect are derived. Then, by using the Galerkin method, a mathematical solution is presented. In the numerical studies, effects of various factors on the natural frequencies and nonlinear amplitude-frequency response of the simply-supported peizoelastic laminated plates with interfacial imperfections are discussed. These factors include different damage models, thickness of the piezoelectric layer, side-to-thickness ratio, and length-to-width ratio.     

结构可靠性分析方法--AFOSM的进一步精确化

给出了结构可靠性分析方法－改进一次二阶矩法（AFOSM）一套新的计算公式,并以纤维增强复合材料层合板结构为研究对象,运用随机有限元法（SFEM）数值计算方法分析各单层板的可靠性指标β。文中算例计算结果表明,本文给出的计算公式是合理的和有效的,而且用它所得计算结果比用原AFOSM所得结果更加精确。