基于ANSYS二次开发的任意截面轴力弯矩的计算方法研究

Research on the Method of Calculating the Axial Force and Moment of Arbitrary Section of Lining Structures of Surge-shafts

截面轴力和弯矩是进行结构配筋的基础,但是通过有限元所计算获得的都是单元节点上的应力,对于任意截面上的轴力和弯矩的求解必须通过单元形函数插值获得。以ANSYS为平台,对调压井衬砌结构进行计算和分析;运用APDL语言进行二次开发工作,并采用路径映射技术,实现了任意截面的轴力,弯矩数据的图形,表格,文件的输出,为衬砌配筋计算提供了依据。

The axial force and moment are the bases of reinforcement of structures ,but the FEM calculations such as stress is on the node ,it must take possession of interpolating by shape function to get the calculations of axial force and moment of arbitrary section. Based on ANSYS, this paper calculates and analyzes the stress of lining structures of surge-shafts, using APDL language to engage in the second development, which improves the efficiency of preprocessor and makes use of the technology of mapping results onto a path to accomplish the output of axial force and moment of arbitrary section on graphs ,geometry and file lists, which lays a foundation for the calculation of reinforcement of lining structures.