Analysis on the Structural Reliability of Solid Rocket Motor Grains

摘要：

　　Based on Integral Stochastic Finite Element Method (ISFEM),the structural reliability of solid propellant grain was analyzed.Viscoelastic finite element method was determined and ISFEM is utilized to improve calculation efficiency.The thermally accelerated aging experiments at 40℃,50℃,60℃ and 70℃ were carded out,and the mechanical property parameters were investigated.Considering the randomness of Poissons ratio and relaxation modulus,structural reliability and its variation tendency solid rocket motor grain under the ignition pressurization case were investigated in combination with failure criterion.The results show that the reliability of SRM grain descends not evidence before twelve years,but quickly descends after 12 years.

关键词： Propellant grain ISFEM Structural reliability Mechanical property

作者: Bing Long Xinlong Chang Bin Jian Jianwei Lai

作者单位: Xian High-tech Institute,Xian,shaanxi 710025,China

会议类型: 国际会议

会议名称: the 2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology (第二届制造科学与检测技术国际会议(ICFMM 2012))

会议地点: 西安

会议语种:英文

页码: 953-957

在线出版日期: 2012-06-12（万方平台首次上网日期，不代表论文的发表时间）