构造了一个新的locking—free非协调四面体元,研究了单元对三维纯位移弹性问题的一致收敛性,得到了最优的误差估计结果.
A new nonconforming locking-free tetrahedral finite element is presented, which is uniformly convergent for the elasticity in three-dimension. And the optimal error estimates are derived.