纤维缠绕复合材料壳体的非线性大变形有限元分析

Nonliear Large Deformation Finite Element Analysis of Filament Winding Case

叙述了纤维缠绕复合材料固体火箭发动机旋转壳体与回转体构成的组合结构在轴对称大变形状态下的非线性有限元分析方法。给出了在轴对称大变形条件下的八结点等参单元和拟协调双曲壳单元的有限元列式。算例结果与已知的理论值符合较好。

A nonlinear finite element method is used to analyze composite structure consisting of flamentwound solid propellant rocket motor case and revolutionary components in axismmetric large deformationstate. Finite element formulations are given for 8-node isoparametric element and proposal coordinative hyperbolic shell element in aaisymmetric large deformation state. Results of a calculating example are in goodcorrespondance with the theoretical value.