三种求解桩腿耦合缓冲器的有限元分析方法

Three FEA solutions for simulating the leg mating unit

利用非线性有限元软件ABAQUS建立桩腿耦合缓冲器的三维体单元旋转周期对称模型,通过合理的假设与简化,分别用简单的线性静力分析、增量-迭代的非线性静力分析和基于中心差分法的准静态分析方法,对其在垂直工况下的受力变形进行有限元仿真,从求解方法、仿真要点和计算结果等方面进行对比分析,指出各种分析方法的优缺点,为合理高效地运用有限元软件对桩腿耦合缓冲器进行仿真分析和优化设计提供参考.

The 3D cyclic symmetric finite element model（FEM） is created and its vertical load case is simulated with such three methods as the linear static solution,the incremental and iterative nonlinear solution and the quasi-static solution by ABAQUS.The charateristics,techniques and results of the three solutions are discussed respectively and compared with each other at length.The advantages and disadvantages of each method are summarized,which aims to provide reference for the finite element analysis and the design optimization of leg mating unit.