有初始几何缺陷的壳体弹塑性大变形分析

Elastoplastic Large Deformation Analysis ofShell with Initial Geometric Imperfections

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、小应变分析的弹塑性内时本构方程。并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。文中给出的算例表明本方法是可行有效的。

On the basis of elastoplastic constitutive equations of intrinsic time applying to isotemperature andsmall deformations,this paper has deduced constitutive equations suitable for the case of large dis-placements but small strains.The paper also presents the finite element equations of elastoplastic largedeformation problems with initial geometric imperfections.An example is provided at the end of pa-per.