固体发动机药柱粘结试件的三维应力分析  

THE THREE-DIMENSIONAL STRESS ANALYSIS OF SOLID MOTOR GRAIN′S ANALOG BOND SPECIMEN

作　　者：王至存 朱祖念 张善祁 

机构地区：[1]航天工业总公司四院41所

出　　处：《宇航学报》1996年第4期34-38,共5页Journal of Astronautics

摘　　要：推进剂／衬层／绝热层矩形粘结试件已作为随发动机测试试件，用于监控药柱最薄弱的推进剂／衬层界面粘结质量。由于试件较厚，又材料具有粘弹特性，因此应对它进行三维粘弹性有限元分析。本文分析了推进剂／衬层界面附近的应力分布情况，并给出试件启裂点有效应力与拉伸平均应力之比的集中系数。The rectangular bond specimen for propellant-liner-insulation adhesive simulation has been utilized to monitor the performance of propellant-liner bond interface which is the weakest in a solid motor grain. Because of the thick-ness and viscoelastic behavior of the specimen, a three-dimensional viscoelastic analysis for the specimen is necessary. A finite-element method is developed to analysis the stress distribution on the propellant-liner bond plane. In addition, the stress concentration factors of failure point, which are vatios of the maximum effective strss and average stress, are available in this paper.

关 键 词：固体推进剂 有限元法 应力分析 火箭发动机 

分 类 号：V435.21[航空宇航科学与技术—航空宇航推进理论与工程] V512