初应力法解拉压双弹性模量问题

Solution to problem of dual extension-compression elastic modulus with initial stress method

建议采用初应力法求解不同拉压双模量弹性问题。采用等参单元，并在高斯积分点上判断应力状态，具有精度高和计算量小的特点。给出有关算例表明与理论解的结果符合很好。

Initial stress method is proposed to solve the problem of dual extension-compression elastic modulus. Iso-parametric element is employed, and the stress status is judged on the Guss integral point. The numerical examples are exhibited.