摘要
为了解决钢混结构非线性有限元分析计算收敛困难的问题,首先建立了矩形截面钢混简支梁ANSYS有限元模型,并通过设置多载荷步和不同载荷子步对模型进行了求解,得出了相应的迭代收敛曲线。研究结果表明,采用多载荷步,同时对于迭代曲线波动大的时段,加大求解载荷子步,能有效改善钢混结构非线性有限元分析计算收敛性。
In order to solve the problem in keeping the calculation results convergent in the nonlinear FEA for reinforced concrete structure,the ANSYS model of rectangular cross-section reinforced concrete beam was established,and the corresponding iterative curves were obtained by setting multi-load step and different load substeps to solve the model.The results show that it can efficiently improve the convergence of calculation in the nonlinear FEA by multi-load step and increasing load substeps for the volatile period of the iterative curve.
出处
《机电工程》
CAS
2010年第10期5-7,20,共4页
Journal of Mechanical & Electrical Engineering
关键词
钢混结构
有限元
载荷子步
reinforced concrete structure
finite element
load substep
