This paper describes a new computer program ( regresssd ) to simulate the regression of complex 3 _ d grain cavity and calculate the burning surface area 本论文介绍了一种新的固体火箭发动机复杂三维药柱内腔燃烧推移和燃面计算的动态仿真和计算系统。
The opposite collision source improve the energy of the source and obtain the seismic wave having high energy by using the dynamite explode the two poles at the same time 两弹对撞震源采用药柱两端同时起爆，提高震源的激发能量，产生高能量的地震波。
With grain design and the calculations of pressure - - - time and thrust ? time , the designers of rocket can improve their structure design 通过药柱的设计和压强? ?时间曲线和推力? ?时间曲线的计算，为固体火箭发动机设计、装药强度分析和装药完整性分析提供了有力的支持。
5 . the internal ballistics and the throttling performance of 85 % h2o2 - pe hybrid rocket motor loaded with tube grain are studied . the hot firing data of two test motors have been carefully analyzed 研究了管型药柱的85 h _ 2o _ 2 - pe固液火箭发动机的内弹道性能和节流特性，分析了两台发动机的试验结果。
Last , the result is compared with the result of analytic method . this paper provides a new method to analyze the grain structural integrality . the result provides the gist of grain figure in optimize design 通过这些计算和分析，为底排?火箭弹助推火箭推进剂药柱结构完整性分析的有限元法提供参考，为药柱药形的优化设计提供依据。
Solid rocket motor ( srm ) grain is casted integrally from solid propellants . it is one of the important structural components and also provides fuels for srm . the reliability of srm grain should be paid great attention 固体火箭发动机药柱是由固体推进剂整体浇铸而成的，既为发动机提供燃料，又是重要的结构组成部分，其安全性不容忽视。
Because explosive shape is regular , steel plate mainly occurs shear damage similar to hole piercing , the extent of damage gradually increase with explosive mass increasing , finally explosion outcome will enter oilcan ' s interior from crevasse 由于药柱形状规则，钢板主要发生类似冲孔的剪切破坏，破坏程度随炸药质量的增加而加强，爆轰产物会从钢板破口处进入油罐内部。
This paper using ls - dyna finite element analysis program to model the damage process of oilcan steel plate under no . 3 rock explosive load , analysing the effect of the mass and shape of explosive to steel plates extent of damage and shape of crevasse 利用ls - dyna有限元程序，模拟了油罐钢板在3 (上标# )岩石炸药爆炸载荷下的破坏过程，分析了炸药质量、药柱形状对钢板破坏程度和破口形状的影响。
In this paper , based on the viscoelasticity theory and the dynamics theory , the finite element method ( fem ) is used to the structural integrality analysis of the grain in rocket engine of the base - bleed and rocket compound extended range projectile in chamber 本文基于粘弹性理论和动力学理论，运用ansys对某型号底排?火箭复合增程弹助推火箭发动机药柱在膛内的结构完整性进行了系统的分析。
Using the directional characteristic of the positive direction explodes elongated charge , wavefront of the elongated charge in the explode location shown higher directivity is in - phase stacked , and also propitious for p - wave to explode and travel 细长药柱震源利用正向激发长药柱的定向性特点，达到激发后的波前面在垂直向下的方向上是同相叠加的，显示出很强的定向性，有利于纵波的激发和传播。
