• 论文 •

### 关于组合结构中的连接条件及其有限元法实现

1. 中国科学技术大学
• 出版日期:1980-04-20 发布日期:1980-04-20

### FINITE ELEMENT IMPLEMENTATION FOR LINK CONDITIONS OF COMPOSITE ELASTIC STRUCTURES

1. Shi Zhong-ci Chinese University of Science and Technology
• Online:1980-04-20 Published:1980-04-20

In [1] Prof. Feng Kang has considered the elliptic differential equations on compositemanifold of different dimensions and has given a precise mathematical foundation for compositeelastic structures. According to this theory, we have discussed in, detail the formulation of linkconditions for rigid connection between different parts of structures and their finite elementimplementation. It was pointed out, for instance, that on the link line of two plates or platewith beam only three translational displacement components and a longitudinal rotation ought tobe set continuously and nothing should be required for the other two transversal rotation angles.However, it is usual for some engineering finite element calculations to demand that all thesix displacement components be continuous, which may make the problem unsolvable in somespecial cases because of superfluous continuity. We further proposed a computational scheme for treating the link conditions, which wereprocessed in connection with substructures method for solving the stiffness matrix equation.

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 [1] 冯康,组合流形上的椭圆方程与组合弹性结构,计算数学,1:3(1979) ,199-208． [2] 冯康,弹性力学基础,石化部短训班讲义,1977．
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