爆炸罐模拟仿真优化设计技术研究

针对目前对含能装置内部含能材料作用过程的模拟开展得不多的问题,以爆炸罐结构为例进行仿真优化设计技术研究.利用 LS-DYNA 有限元软件对 2 种结构形式爆炸罐的作用过程进行模拟仿真计算,研究分析爆炸罐罐内火炸药的作用过程、罐壁应力分布和变形,及最大应力和变形所处的位置.以此为依据,通过对 2 种结构形式爆炸罐的应力和变形进行分析得出爆炸罐的最佳结构性式,并在此基础上提出应开展的研究方向.结果表明:该方法能使含能结构的研制方法从工程估算、实验研究提升到数字模拟优化设计,还能提供准确的应力分布和变形结果.

Study on Optimize Design Technical with Numerical Simulation for Explosive Tank

Because of the problem about fewer to develop the research on numerical simulation of the function process of the energetic material in energetic device, the study was make here on the optimize design technical with numerical simulation for the explosive tank. The function processes of two styles explosive tank were numerically simulated with finite element code LS-DYNA in the paper. The analysis was down on the acting process of explosive in the tank, and the study on the stress distribution and the transformation of the tank wall at different moment were down and just as to the position of the maximum stress and the transformation. Upon this the optimize structure style was get through to compare the stress and transformation of two structures. On the basis of above, the need of developing researching faction was proposed. It was indicated that this method in the thesis not only to promote the study and manufacture of the energetic structure from the engineering estimating or testing manufacture to the optimize design technical with numerical simulation, but also to give the exact result of the stress distribution and the deformation of the explosive tank after working.