有限元多类型单元组合的实现及其应用  

Combination of Multi-type Units of Finite Element and Its Application

作　　者：袁政强[1] 赵楠[1] 

机构地区：[1]重庆大学土木工程学院

出　　处：《后勤工程学院学报》2011年第1期20-24,57,共6页Journal of Logistical Engineering University

基　　金：国家自然科学基金资助项目(101022720080097)

摘　　要：结构计算中会采用多种类型单元对同一结构进行计算。传统的结构有限元计算大多采用FORTRAN语言进行编程，由于无法实现多态性的混合单元计算，所以对多类型单元程序相当复杂。将c语言中空指针思想应用于结构有限元分析，从而用简单的c语言实现了不同类型单元的混合编号、自动分类型进行刚度矩阵计算等复杂的多态性功能。首先提出在c语言中运用空指针实现多态性功能的思想，进而详细阐述了程序FEM的单元定义和多态性调用的方法，最后用一个算例说明了这种编程方法的优越性，为工程师提供了更高效的有限元编程思想。Multi-type Units is offen used to calculate the same structure in structure calculation. Programmed by FORTRAN language, and incapable of realizing polymorphism mixed units calculation, the traditional fem analysis of structure is very complicated for multi-type units program. By use of null pointer thought in C language, the complex polymorphism feature including the fixedly numbering of different type units, the calculation of stiffness matrix by spontaneously Classifying model is achieved with simple C language. Firstly,the idea that using null pointer to achieve polymorphism feature is proposed. Then,the units defining and polymorphism calling method of program FEM are elaborated in detail. Finally, an example is given to illustrate superiority of the programming method. The research provides a more efficient fem programming thought to civil engineer.

关 键 词：C语言 多态性 结构有限元 多类型单元 

分 类 号：TU311.41[建筑科学—结构工程]