摘要
几何构型是影响固体发动机结构完整性的重要因素之一。基于三维线性粘弹性理论和结构分析软件MSC.NASTRAN,改变发动机药柱的几何参数并对发动机进行结构分析,探讨了几何参数对发动机结构完整性的影响,并提出了不同几何参数的调整方法。结果表明,增加发动机药柱内孔直径或沟槽顶弧采用三心圆设计都能有效降低发动机药柱的应变水平,提高发动机点火的安全系数。
Geometry structure is one of the most influential factors on SRM structural integrity. Based on the three-dimensional linear viscoelastic theory and the structural analysis software MSC. NASTRAN, the SRM with different geometric parameters was analyzed. The influence of geometric parameters on the structure integrity of SRM was discussed and the method of structure adjusting is brought out. It is shown that, an increasing diameter of the lumen and adopting three-circle slot can reduce strain level effectively and enhance the launching safety factor obviously.
出处
《试验技术与试验机》
2007年第2期1-3,共3页
Test Technology and Testing Machine
基金
"十一五"武器装备预先研究项目(513270301)
国防科技大学科研计划项目(JC06-01-01)
关键词
固体发动机
结构完整性
几何构型
SRM （solid rocket motor）
structure integrity
geometry structure
