钢混结构有限元分析载荷子步设置方法研究

作者：石端伟，吴志纯，张 炎，王志远 日期：2010-11-22/span> 浏览：3834 查看PDF文档

钢混结构有限元分析载荷子步设置方法研究
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石端伟，吴志纯，张 炎，王志远

(武汉大学 动力与机械学院，湖北 武汉 430072)
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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。
关键词：钢混结构；有限元；载荷子步
中图分类号：TU375
文献标识码：A文章编号：1001-4551(2010)10-0005-04

Research on load substep settings of FEA for reinforced concrete structure
SHI Duanwei, WU Zhichun, ZHANG Yan, WANG Zhiyuan
(School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China)
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Abstract: 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.
Key words: reinforced concrete structure; finite element; load substep