矩形板非线性蠕变损伤屈曲特性分析  

Nonlinear Analysis of Creep Damage Buckling of Rectangular Plate

作　　者：向红[1,2] 傅衣铭[2] 

机构地区：[1]株洲工学院 [2]湖南大学

出　　处：《应用力学学报》2006年第2期308-312,341,共5页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金项目(10272042);教育部博士点专项基金项目(20020532018)

摘　　要：基于Von Karman非线性板理论和Kachanov-Rabotnov损伤理论,建立了在横向和面内载荷共同作用下考虑蠕变损伤效应的矩形板的非线性控制平衡方程,采用有限差分法和时间增量算法对未知变量进行离散,对整个问题进行迭代求解,分析了几何非线性、荷载等因素对板非线性蠕变损伤特性的影响。Based on the Von Karman nonlinear theory and Kachanov-Rabotnov damage theory,nonlinear governing equations of rectangular plates with creep damage under transverse and in-plane loads are derived.The unknowns are separated with finite difference method and time increment method,then the governing equations are solved by iterative approach.The effects of geometric nonlinearity and loads on the creep damage buckling of a rectangular plates are discussed.

关 键 词：蠕变损伤 矩形板 非线性屈曲 

分 类 号：O346.5[理学—固体力学]