固体火箭技术2013，Vol.36Issue(1)：22-26,5.DOI:10.7673/j.issn.1006-2793.2013.01.005
脉冲发动机中金属膜片式隔舱动态破坏过程研究
Research on the process of dynamic failure of metal diaphragm pulse separation device in pulse motor
王春光 1任全彬 1田维平 1刘洪超 1杨德敏1
作者信息
摘要
Abstract
In order to achieve the pulse start of solid rocket motor, one metal diaphragm pulse separation device (PSD) was designed. Fracture mechanics theory and circular plates with large deflection theory were used to establish metal diaphragm designing formula. The sizes of metal diaphragm with 2.2 MPa opening pressure were determined. Brittle cracking model was used to simulate the process of dynamic failure of the diaphragm,and the numerical opening pressure was 2.15 MPa. The designing formula results a-gree with the computational results very well. The verification monomial test was designed to verify the accuracy of designing formula and simulation. The average opening pressure of five tests was 2. 10 MPa. The simulation failure mode agreed with the test results. The probability of true average opening pressure between 1.90 MPa and 2. 30 MPa is 90% , which can satisfy with the design requirements.
关键词
脉冲发动机/金属膜片式隔舱/设计公式/脆性断裂模型Key words
pulse motor/metal diaphragm pulse separation device/designing formula/brittle cracking model分类
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王春光,任全彬,田维平,刘洪超,杨德敏..脉冲发动机中金属膜片式隔舱动态破坏过程研究[J].固体火箭技术,2013,36(1):22-26,5.
