摘要
运用有限元分析软件MSC.PATRAN/NASTRAN,选用四边形壳单元对T、Y型管节点进行了弹塑性大挠度分析,研究了管节点的受力性能和塑性区扩展过程,并将有限元的计算结果与我国钢结构设计规范GBJ17-88作了简单比较。通过改变管节点主要几何参数即拘束度对管节点极限承载力的影响计算,绘制了管节点极限承载力随其几何参数变化的曲线,分析了拘束度对管节点受力性能的影响,得到一些有益的结论。
An elastic large deflection finite element is used to study the behavior of the circular tubular T/ Y joints. A four node shell element in MSC. PATRAN/NASTRAN is employed to simulate the joints in the analysis. The studies show the joint working performance and plasticity spread with loading. A simple comparison between the FEM results and that of the current PRC codes is made. The influence of various geometric parameters of the joint on its behavior and uhimate strength is investigated theoretically, some useful conclusions are conducted.
出处
《中国海洋平台》
2006年第5期7-12,共6页
China offshore Platform
关键词
T、Y圆管节点
拘束度
非线性分析
极限承载力
tubular T/Y joints, cabined degree, nonlinear analysis, ultimate strength
