强冲击载荷下氧化铝陶瓷靶破坏过程的SPH数值模拟

摘要

陶瓷材料因具有低密度、高强度和高声速等良好的力学特性,被广泛应用到军事、航空航天和舰船防护等领域。为了研究氧化铝陶瓷靶板在强冲击载荷下的破坏性能,利用AUTODYN软件,采用光滑粒子流体动力学求解器对钨合金弹丸撞击氧化铝陶瓷靶过程进行模拟计算。将模拟结果与实验结果进行对比可知,模拟结果与实验结果非常吻合,说明所采用的计算方法正确。该研究方法为分析氧化铝陶瓷在强冲击载荷下的破坏特性提供了一种方便的途径,节省了研究时间和研究成本,提高了研究效率。%Ceramics materials have been widely used in military projects,aerospace,aviation and ship structure protection,due to their good mechanical properties such as low density,high strength and high sound velocity.The destructive process of alumina ceramic impacted by a tungsten alloy projectile is simulated using smoothed particle hydrodynamics（SPH） techniques of AUTODYN.The simulation results are consistent with the experimental results,which indicate that the method is feasible and effective.The method proposed provides a convenient and economical way to study the failure behavior of alumina ceramic under strong impact loading.