变截面箱梁 ANSYS 前处理程序开发与应用

摘要

A program is developed which can turn the geometric information of box girder with varying depth into ANSYS preprocess command flow,using AutoCAD and Visual Fortran program.This pro-gram can produce the high quality hexahedron mesh and adjust the grid density according to user's needs well.This program will save the time of finite element modeling and improve the design calcula-tion efficiency in the premise of the calculation accuracy.Finally,a detailed finite element analysis of a large continuous rigid frame arch bridge is presented with the help of this program.%基于通用有限元分析平台 ANSYS，利用计算机辅助设计软件 AutoCAD，以及 Fortran 程序，设计了将变截面箱梁几何信息转换为 ANSYS 前处理命令流，从而进行快速网格剖分的程序。该程序具有生成高质量六面体网格，以及根据用户需要随意调整网格密度的功能，在保证网格精度的前提下节约了有限元建模时间，提高了计算效率。运用该程序对某大型连续刚构拱桥进行了局部有限元分析。