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利用ANSYS有限元软件分别建立了优化前后节点的三维实体模型,合理定义了钢材的本构关系,分别对优化前后的节点进行了非线性有限元静力分析,得到了节点的有效应力云图及荷载位移曲线,并利用变形极限概念,对比研究了优化前后节点的承载力。结论证明优化后的节点受力更加合理,承载力得到了明显提高,同时验证了利用钢材的塑性性能对钢节点进行设计的合理性,推广了有限元软件在节点设计中的应用。
The finite element software ANSYS was used to establish the three-dimensional solid model of the nodes before and after the optimization. The constitutive relations of the steel were reasonably defined. The nonlinear finite element static analysis of the nodes before and after optimization was carried out. The effective stress maps and loads Displacement curve, and using the concept of deformation limit, comparative study of the node before and after optimization of bearing capacity. The conclusion proves that the optimized joint is more reasonable in bearing force and the bearing capacity is obviously improved. At the same time, the rationality of using the plasticity of the steel to design the steel joint is verified, and the application of the finite element software in the joint design is promoted.