【三维耦合热接触应力计算方法及其在汽缸盖分析中的应用】李名彰.pdf

触问题进行了系统、深人的理论与实验研究.同时,还具体研究实施了三维有限元网格自动生成与网格消隐显示等前后处理技术,将研究成果应用于工程实际,解决了发动机汽缸盖三维耦合热接触应力分析问题,其主要内容包括:中柔度阵的对称化处理,极大地简化了算法,节省了计算机内存,提高了计算效率,从而获得了一种较理想的接触应力分析方法一改进的有限元混合法.弹性体摩擦接触内力大小与方向的确定问题,完整建立了一套三维弹性体摩擦接触问题有限元混合法的计算格式,并用FORTRAN语言在VAX-II计算机上实现。

ABSTRACT Inthis dissertation,the problemof 3D heat combined with friction,which is often met in real engineering and.manyresearchers are trying to solve,hasbeen studieddeeplyinaseriesof.theory.andtest.Meanwhile,the pre-post-processing technique-automatic 3Dfinite element.

mine the complex temperature baundary conditions,specially to determine 3D inder head and the cylinder as a contact system, according to thereal structure, suggestions to improve the structure design or benefit the strenth have been pres- entedinthisdissertation.