摘要
针对某大口径火炮膛内射击过程的求解问题,采用有限元方法建立包含坡膛的全身管模型,运用ABAQUS幅值子程序,计算弹丸运动和火药燃烧的耦合过程,得到膛压初速的变化规律,并与常规解算方法进行对比。结果表明,仿真计算值与实测值吻合较好,挤进过程弹带逐渐刻槽,弹带结构影响其受力状态,是后续弹道规律的影响因素。可以改变挤进系统的结构参数,来研究不同起始条件下的内弹道性能变化规律,为内弹道计算提供了一种方法。
Aiming at the solution of a large-caliber artillery firing process,an interior ballistics model containing chamber throat is established by finite element method.Applying amplitude subroutine of ABAQUS,the coupling process that consists of projectile movement and propellant burning is solved.Then the chamber pressure and projectile velocity are obtained and compared with that of conventional solving method.The results show that simulation results coincide with the experimental results.Rotating band deforms gradually,and its structure affecting the stress state is an influencing factor of ballistics regularity.By changing structure parameters of the engraving system,the computing method is an effective measure for different initial conditions to research interior-ballistics capabilities.
出处
《计算机仿真》
北大核心
2017年第3期1-5,共5页
Computer Simulation
关键词
挤进过程
弹带
挤进压力
内弹道
有限元
Engraving process
Rotating band
Engraving pressure
Interior ballistics
Finite element
