【摘要】 为了研究民用膨化硝铵炸药为主装药的线性聚能切割的工艺参数,采用实验研究和三维数值模拟(ANSYS/LS-DYNA)相结合的方法,对以膨化硝铵炸药为主装药的聚能射流侵彻钢靶板过程的特点和规律进行了研究。对比各工况数值模拟结果与实验结果表明,2种方法的侵彻深度吻合较好,验证了拉格朗日-欧拉(ALE)方法的有效性,说明可采用此方法模拟射流的形成和侵彻。研究结果表明,采用民用膨化硝铵炸药作为主装药用于线性聚能切割时,在实验给出的工况条件下,炸高为40 mm,药型罩厚度为1.0 mm,药型罩锥角为80°时,可获得最大侵彻深度。更多还原

【Abstract】 In order to study the process parameters of linear shaped charge cutting of civil explosives with expanded ammonium nitrate as the main charge, the methods of experimental research and three-dimensional numerical simulation(ANSYS/LS-DYNA) are adopted. The characteristics and rules of the penetration process of the shaped charge of expanded ammonium nitrate explosive into a steel target are studied. Compared the two results, the penetration depths of the two methods is in good agreement. The effectiveness of the Lagrange-Euler(ALE) method is verified, which indicate that this method can be used to simulate the formation and penetration of jet. The results show that the maximum penetration depth can be obtained when the explosion height is 40 mm, the liner thickness is 1.0 mm and the liner cone angle is 80°using expanded ammonium nitrate as the main charge for linear shaped charge cutting.更多还原