航天推进剂金属膜片贮箱是航天运载器的重要部件,贮箱膜片能否有效稳定地翻转是影响贮箱性能的关键因素。使用MSC.marc软件,采用大变形弹塑性有限元法对膜片的翻转变形过程进行模拟,并分析其翻转失效状态及翻转失效原因,总结出膜片各参数对翻转效果的影响,为金属膜片的设计及控制膜片的失效提供参考依据。 Aerospace propellant metal diaphragm tank is an important part of aerospace carrier. Whether tank diaphragm can be turned over effectively and steadily is the key factor that affects tank performance. Using MSC.marc software, the large deformation elasto-plastic finite element method was used to simulate the process of overturning and deformation of the membrane. The failure state of the membrane and the cause of overturning failure were analyzed. The influence of the parameters of the membrane on the overturning effect was summarized. Film design and control failure of the diaphragm provide a reference.