针对基于广义逆的特大增量步算法的二维拓展

Application in 2D Solid Analysis of General Inverse Matrix-Based Large Increment Method

为将特大增量步算法推广应用到二维实体分析上,提出了一种能适应特大增量步算法求解的二维4节点四边形单元.应用新单元的数值算例的结果表明,该单元在算法上收敛,对单元畸变不敏感,能用于特大增量步算法并可以利用在杆件结构系统类似的方法发挥并行计算的优势.

To extend the application of large increment method（LIM） into 2D solid analyses,a 4-node quadrilateral element which adapts to LIM was proposed.Two numerical examples were solved using the new element.The mesh convergence and the insensitiveness to the mesh distortion are proved,and the advantage of parallel computation is implied.