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航天管路系统中需要应用波纹补偿器进行软连接,波纹补偿器承受着温度、压力及位移补偿等载荷,需要对补偿器的设计及试验方法进行深入研究。文中对航天管路系统用DN30波纹补偿器进行工程设计和数值模拟分析,研究它的极限承压能力和疲劳寿命,并将结果同试验数据对比,以验证其设计精度。结果表明,有限元法的计算精度优于工程设计方法。在产品设计过程中,把有限元仿真分析、工程设计和试验有机结合在一起,能够显著提高设计精度和产品可靠性。
Aerospace piping systems require the use of corrugated compensator for soft connection, corrugated compensator to withstand the temperature, pressure and displacement compensation and other loads, the need for compensator design and test methods in-depth study. In this paper, engineering design and numerical simulation of aeronautical pipeline system DN30 corrugated compensator are carried out to study its ultimate bearing capacity and fatigue life. The results are compared with the experimental data to verify its design accuracy. The results show that the accuracy of finite element method is superior to engineering design method. In product design process, the finite element simulation analysis, engineering design and testing organically together, can significantly improve the design accuracy and product reliability.