ANSYS刚-柔混合法在柔性接头结构分析中的应用  

Application of ANSYS mixed rigid-flexible multi-body method for flexible-joint structure analysis

作　　者：尤军峰[1] 汪凌燕[2] 付鹏[1] 

机构地区：[1]中国航天科技集团公司四院四十一所固体火箭发动机燃烧热结构与内流场国防科技重点实验室,西安710025 [2]西安航天复合材料研究所,西安710025

出　　处：《固体火箭技术》2017年第1期32-36,共5页Journal of Solid Rocket Technology

摘　　要：针对类似固体火箭发动机喷管柔性接头多层、薄壁钢-橡胶复合结构在进行仿真分析时,有限元模型单元、节点数多,收敛困难的问题,采用ANSYS刚-柔混合法,对柔性接头结构进行研究。结果表明,在同等约束与边界条件,采用刚-柔混合模型,计算得到的位移和约束反力(矩)和试验结果相比,误差很小(在5%以内)。该方法用于柔性接头结构分析,可快速获得柔性接头在外载作用下的位移、应力及摆动力矩等,为柔性接头设计与分析提供参考。For the problems of the large quantity of elements and nodes,difficult convergence during simulation for flexible-joint of nozzle of SRM,ANSYS mixed rigid-flexible multi-body method was applied to multi-layer,thin-walled,complicated structure.Research shows：under the same constraints and boundary conditions,calculation results of the deformation and the moment reaction（torque） by using ANSYS mixed rigid-flexible multi-body method are well coincident with the test,and the error is within 5%.By this method,flexible-joint displacement,stress and moment reaction can be easily obtained under the action of outside loads and deflection torque.As a result,the method provide a reference for design and research of flexible-joint.

关 键 词：固体火箭发动机 柔性接头 刚-柔混合体 结构分析 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]