一种应用于弹塑性结构重分析的快速计算方法

A New Fast Algorithm of Re-analysis Using Elasticity-Plastic Structure

为提高弹塑性计算的效率,以弹塑性有限元增量迭代方法为基础,提出了一种新的快速计算方法。该算法用已求解样本的信息来加速求解待求样本,从预测位移、迭代求解2个步骤来实现弹塑性问题的计算。数值计算结果表明,快速算法能大幅提高计算效率,且具有较高的可行性。

Based on the elastic-plastic finite element incremental iterative method,a new fast calculation method was proposed in order to improve the efficiency of elastic-plastic FEM.The algorithm,which could speed up solving the problem of the unknown sample with solved samples＇ information,achieved to solve the elastic-plastic problem by the two-step calculations,i.e.the predicted displacement and iterative solution.The numerical results show that this new fast method can significantly improve the computational efficiency and has a high feasibility.