固体发动机柔性喷管静态刚度和强度研究

摘要

结合柔性喷管纤维缠绕扩张段的结构特点，提出了一种纤维缠绕变厚度壳体的复合材料单元；同时，对柔性接头进行了合理的简化，用弹簧模型取代，在此基础上建立了柔性喷管的力学计算模型，借助非线性有限元理论，对锥筒式扩张段形式的柔性喷管进行了控制力作用下的静态刚度和强度研究。%According to the characteristic of file-wound divergent section in flexible nozzle，a special various thickness composite element is presented．The caculation models are found through simplifying the flexible joint construcure．At last，the stiffness and stress analysis of flexible nozzles with the divergent section form by non-linear finite element method is conducted．