摘要
本文在等温小变形弹塑性内时本构方程偏量形式的基础上，导出了适用于大位移、大转动、小应变分析的弹塑性内时本构方程，进一步推导出了带有初始几何缺陷的非线性弹塑性问题的有限元方程，可用于分析缺陷对结构非线性弹塑性反应的影响，也可用于带缺陷的非线性问题求解及稳定性分析．
On the basis of elastoplastic constitutive equations of intrinsic time for isotemperature and small deformations, this paper has deduced constitutive equations suitable for the case of large displacements,large rotations but small strains.We also present the finite element equations of elastoplastic large deformation problems with initial imperfections.They can be used to analyze the effects of imperfections on the elastoplastic response of structures.They are also useful for the solution of nonlinear problems and buckling analysis.The paper is concluded with one example.
出处
《固体力学学报》
CAS
CSCD
北大核心
1995年第1期61-64,共4页
Chinese Journal of Solid Mechanics
关键词
变形
弹塑性
壳体
几何缺陷
塑性力学
initial imperfections
large deformation
intrinsic time
elastoplasticity
