【摘要】 计算机数值模拟是实现空间碎片撞击效应地面模拟的重要手段之一。撞击速度增加,撞击的物理机制和效应将发生改变,计算机数值模拟方法也应随之丰富和全面。介绍了基于有网格和无网格方法的高速撞击数值模拟发展历程,并针对数值模拟中常用的有限元法和SPH法进行了分析比较,阐述了高速撞击计算机模拟中无网格法的计算优势,并提出量子力学在未来无网格法数值模拟中的可能应用。为空间碎片高速撞击更加真实可靠的数值模拟提供参考。更多还原

【Abstract】 Computer numerical simulation is one of the important means to realize the ground simulation of space debris impact effect. The physical mechanism and effect of the impact would change with increasing impact speeds,so the method of computer numerical simulation should also be enriched. The development of numerical simulation of hypervelocity impact on the basis of mesh and meshless method were introduced,and the finite element method and SPH method commonly used in numerical simulation were analyzed and compared in this study. The computational advantage of the meshless method in the hypervelocity impact computer simulation was illustrated,and the future developments of the quantum mechanics principle in the meshless method were proposed. This study would provide a reference for more realistic and reliable numerical simulation of space debris hypervelocity impact.更多还原