曲壳有限元法中曲面交线处位移连续性问题的坐标转换法

Coordinate Transformation Method to Handle Displacement Continuation Problem on the Intersection Line of Curved Surfaces in the Curved Shell Finite Element Method

提出了在曲壳有限元法中用坐标转换法处理曲面交线处结点位移的连续性问题。该法被编入一个基于修正拉格朗日描述（Ｕ．Ｌ法）的曲壳非线性有限元程序中，对一个直接焊接的钢管节点进行了分析，并讨论了该法的优点。

The coordinate transformation method to handle displacement continuation problem on the intersection line of curved surfaces in the curved shell finite element method is presented.This method is put in a curved shell nonlinear finite element program based on updated Lagrangian formulation (U.L.method),a directly welded joint is analysed,and the advantages of the method are discussed.