中文摘要：

以AutoCAD为几何平台,并利用其提供的二次开发技术实现了有限元前处理系统的编程。该方法解决了常规的有限元分析系统中的几何建模系统和前处理系统脱节的问题。集成了造型、单元属性设置、网格划分、显示等多种模块。研究了有限元前处理系统的若干关键技术,包括如何控制网格形态、输出求解数据接口、基于ObjectARX的CAD/CAE集成设计、复杂三维实体的四面体网格全自动生成算法。建立了一个基于AutoCAD的有限元前处理系统。

英文摘要：

AutoCAD is taken as the geometrical platform while the secondary development technology that it offers is used to realize the finite element pre-processing system programming.The method solves the detachment of the geometric modeling system from the pre-processing system within the conventional finite element analysis system.Several other modules such as modeling,cell property setting,grid splitting and display are integrated.Several vital technologies in the finite element pre-processing system are studied,including the way to control a grid pattern,output of solution data interface,ObjectARX-based CAD/CAE integrated design,and complex three-dimensional solid tetrahedral grid automatic generation algorithm.Based on AutoCAD,a finite element pre-processing system is established.