用数值方法构造二阶收敛的平面弹性问题非闭锁三角形元

A Locking-free Triangular Element with Convergence of Two-order for Planar Elasticity Problem Constructed with Numerical Methods

对于纯位移平面弹性问题,在不完全3次多项式空间中,用数值方法基于div(?)∈P_1构造了一个二阶收敛的非协调三角形单元,该单元是非闭锁的,数值算例验证了该单元的收敛性结果。

For pure displacement planar elasticity problem, a nonconforming triangular element is constructed with numerical methods by restricting div→∈P1. The element has two - order of convergence and property of locking - free. Numerical experiments are carried out to show the convergence order of the theoretical analysis.