对ANSYS的Link8杆单元的几何非线性性能的评述  

Review on geometric non-linear performance of ANSYS' Link8 element

作　　者：徐巍[1] 周喆[1] 

机构地区：[1]中国农业大学理学院,北京100083

出　　处：《中国农业大学学报》2005年第3期111-114,120,共5页Journal of China Agricultural University

摘　　要：为研究ANSYS的几何非线性性能,将杆的有限变形理论与ANSYS的样板单元Link8单元的几何非线性理论进行对比。采用能反映杆的几何非线性的跃变结构算例,对有限变形理论的杆单元与Link8单元的计算结果进行比较,结果表明:ANSYS的大变形计算只是一种近似的几何非线性计算,其平衡方程式是不精确的,其计算结果也是不精确的。In order to study the geometric non-linear performance of ANSYS, a comparison was made between the finite deformation theory of rod and the geometric non-linear theory of ANSYS Link8 element. An example of the geometric non-linear rod structure was taken to compare the computation results from the finite deformation theory and ANSYS Link8 element. The results showed that the results from the finite deformation theory were more valid than those from ANSYS Link8 element.

关 键 词：有限变形 杆单元 ANSYS 

分 类 号：O241[理学—计算数学]