【摘要】 国内外普遍使用压力-时间曲线上的第一负压力波幅值来描述压力波的强度,用来检验装药安全性。本文将火药破碎程度与压力波敏感度联系起来,在双一维两相流内弹道模型的基础上进行数值模拟,计算得出了破碎度与第一负压力波幅值,第一负压力波幅值与最大膛底压力关系的曲线。指出用破碎度可以为装药安全性研究提供一种有价值的方法。更多还原

【Abstract】 The first minus pressure difference in pressaretime profile of gan chamber is used to describe the intensity variation of pressure wave and to determine charge safety. In this paper, the relation between the degree of grain fracture and the sensitivity of pressure wave is set up. Based on interior ballistics model of twophase flow. The curves of the first minus pressure difference vs. the degree of grain fracture and the maximum breech pressure vs. the first minus pressure difference are given through numerical simulation. The research results show that the degree of grain fracture is a valuable way to evaluate the charge safety.更多还原