摘要
本文所提出的方法相当于在一般有限元基础上先用一般方法获取位移，利用拉格郎日乘数来强加交界面上的相容条件和平衡条件，然后在最小二乘法意义下在局部区域上建立泛函重新定义。计算结果表明，应力计算精度从根本上得到了改进。
The proposed algorithm consists of solving an elasticity problem by finite element method with a modified set of shape functionS. displacements are obtained conventionally and then redefined over limited rations of the field using a least squares functional minimization approach. Compatibility and equilibrium conditions are imposed at the interface, using Lagrange multipliers. The efficiency of the process is demonstrated by several test cases.
关键词
介质
界面应力
有限元
应力分析
different elastic materials, interface stress, finite element
