一种分析SRM纤维缠绕结构可靠性的方法研究  

Reliability analysis for the fiber winding shell

作　　者：陈顺祥[1] 沈志辉[1] 李克[1] 

机构地区：[1]第二炮兵工程学院,陕西西安710025

出　　处：《兵器材料科学与工程》2006年第2期17-19,共3页Ordnance Material Science and Engineering

摘　　要：分析并建立了一种复合材料回旋结构(SRM-固体火箭发动机)的可靠性的计算方法。采用等参数壳体单元分析了纤维缠绕结构,并用蒙特卡罗随机有限元法对其进行应力分析,然后利用Tsai-Hill失效判据进行强度校核。在蒙特卡罗抽样中引入了β球法加以改进,缩小了抽样范围。因此,可使计算时间大为缩短,效率大为提高。The paper has analyzed and built the computation method of the reliability for the fiber winding shell according to the Monte-Carlo stochastic finite element. At same time, β ball sample improvement has been used to Monte-Carlo method in calctilating the structure reliability. As a result, the calculation time of reliability is greatly cut down. Finally, the paper has calculated the reliability of fiber winding shell.

关 键 词：蒙特卡罗 纤维缠绕壳 可靠性 β球抽样 

分 类 号：TB330[一般工业技术—材料科学与工程]