Structural integrity analysis of the solid rocket motor grain for the internal pressure

摘要：

　　Nonlinear viscoelastic constitutive model employed with damage was used to analyze the structural integrity of a free loading grain, the stress-strain and the damage properties were acquired.On this basis, the influence law of grain geometric parameters (star tip radius r, thickness e, angle fraction ε) on grains structural integrity were further analyzed.And the results show that: the maximum Mises equivalent stress of the grain is approximately linear increase with the decrease of the star tip radius;the maximum Mises equivalent stress of the grain is approximately linear increase with the increase of the angle fraction;the equivalent Mises stress decreases with the increase of the thickness coefficient, and the rate of reduction is gradually increased, the effect of thickness on the Mises equivalent stress is smaller.

关键词： Numerical Simulation Modified Double Base Propellant Structure Integrity Constitutive Model Failure Criteria

作者: Jin-sheng XU Chen-fei WANG Hong-lei MENG Hong-ying Du Chang-sheng ZHOU

作者单位: School of Mechanical Engineering Nanjing University of Science and Technology, Nanjing 210094, Jiang The 41st Institute of the Fourth Academy of CASC, Xian 710025, Shaanxi, China Technology Center, Jinxi Industries Group Corporation, Taiyuan 030027, Shanxi, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 441-446

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）