非协调元的一个有前途的改进方向

A PROMISING DIRECTION TO IMPROVE INCOMPATIBLE ELEMENT

给出了非协调元通过分片检验的一个简单方法，在此基础上指出了非协调元的一个有前途的改进方向，即在非协调部分适当添加对分片检验无影响的项，如双线性项和双二次项，以改善单元场从而获得较好的结果，数值算例表明了可行性和有效性．

Based on a simple method to make incompatible element pass patch test, this paper points out a promising direction to improve incompatible element in which bi linear and/or bi quadratic items that have no effect on patch test are introduced properly into incompatible parts. Some testing elements show the feasibility and validity.