摘要
在等截面杆件稳定问题理论解的基础上，提出结构进入弹塑性阶段其变刚度杆件的位移模式，并基于虚功原理导出了弹塑性单元的切线刚度矩阵，其精确度为９５％．
A displacement model of bar with variable rigidity, applicable to the structure entering into elastoplastic level, is presented. It is based on theoretical solution to the stability of bar with constant section. A tangent rigidity matrix of elastoplastic unit is also derived on the basis of virtual work principle. The method is indicated by calculating example to be of higher accuracy.
出处
《华侨大学学报（自然科学版）》
CAS
1995年第1期34-39,共6页
Journal of Huaqiao University(Natural Science)
关键词
弹塑性
刚架
数值方法
稳定性
stability, elastoplasticity, rigid frame, numerical method
