用于组合旋转壳分析的样条罚子域法

The Spline Penalty Subdomain Methods for Stress Analysis of Combinative Shells of Revolution

根据罚单元的概念以非等距Ｂ３样条为基函数建立了样条罚子域，有效地解决了组合旋转壳结构中非光滑连接子城位移协调问题．拓宽了样条子域法的应用范围．对于一般区域及光滑连接部分则一律采用广义样条子域法建立位移模式．算例表明，利用该方法进行组合旋转壳分析，具有自由度少，精度高和便于程序实现的特点．

Based on the concepts of penalty elements and unequidistunt B spline function, the spline penalty suboomain method is for the first time PUt forward here, so that the compatibility of displacements of the two skew suboomains of the combinative shell is well satisfied and the applied range of spline subdomain approaCh is developed. The generalized spline subdomain methed is ugh to establish suboomains. The computational results show that the method laid here has the advantages of fewer degrees of freedom, higher accuracy and being more convenient to program.