箱形梁和杆系组合结构分析的超级有限元法  

A Super Finite Elemont Method of Analyzing box Beam and Built-up Structure With Bar Member System

作　　者：刘若峰 杜国君[1] 张爱华[1] 

机构地区：[1]齐齐哈尔第二机床厂,东北重型机械学院,哈尔滨汽轮机厂

出　　处：《东北重型机械学院学报》1995年第3期256-260,共5页

摘　　要：本文提出一种超级单元．用以分析箱形梁或杆系组合结构．其做法是将结构离散成一系列超级单元．考虑弯曲、剪切、挤压、拉伸压缩、扭转等多种变形效应．采用构件自由度向超级元自由度的转换．把复杂的多构件问题的求解变为少量一维结点变量问题的求解．大大减少了未知量数目．又能保证精度．并可方便地与一般有限元软件连接．This paper presents a non-classed super element for analyzing the boxbeanl or the built-up structure with bar member system. The structure. beingpartitioned into many one-dimensional non-classes super elements. beingconsidered to sustain bending. shearing. tension and compression. extrusion andtorsion. is analyzed with the FEM. It makes the problem to solving the complexbuilt-up structure with many member system is changed into the problem with afew of one-dimensional nodal(section) varies by transfer the DOF of ordinaryelement to the DOF of super element. therefore the number of the unknowingvaries is decreased.and the accuracy of the proposed method is well.

关 键 词：超级有限元法 箱形梁 杆系组合 结构 

分 类 号：TU320.1[建筑科学—结构工程]