基于FEM⁃SPH自适应耦合方法的蓝宝石DOP性能研究  

A FEM⁃SPH Adaptive Coupled Model for Sapphire DOP Performance

作　　者：吴嘉炜 王新峰[1] 古兴瑾[1] 于健[2] WU Jiawei;WANG Xinfeng;GU Xingjin;YU Jian(College of Aerospace Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China;College of General Aviation and Flight,Nanjing University of Aeronautics&Astronautics,Nanjing 211106,China)

机构地区：[1]南京航空航天大学航空学院,南京210016 [2]南京航空航天大学通用航空与飞行学院,南京211106

出　　处：《南京航空航天大学学报》2023年第4期711-717,共7页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：江苏省自然科学基金青年基金(BK20220871)。

摘　　要：为了提高弹丸侵彻类高速冲击仿真的精确度,本文利用有限元法(Finite element method,FEM)⁃光滑粒子流法(Smooth particle hydrodynamics,SPH)自适应耦合模型对蓝宝石侵彻深度(Depth of penetration,DOP)实验过程开展了数值模拟研究。通过DOP实验,验证了该算法下仿真模型的准确性,并对比了传统FEM算法和FEM⁃SPH固定耦合算法仿真模型的计算结果。研究表明,FEM⁃SPH自适应耦合算法在计算精度上有明显优势。In order to improve the precision of high-speed impact simulation for projectile penetration,the depth of penetration(DOP)process of sapphire is simulated by finite element method and smooth particle hydrodynamics(FEM⁃SPH)adaptive coupled model.The accuracy is verified by DOP experiment.The calculation results of the traditional FEM model and the FEM-SPH fixed coupled model are compared.The results show that the FEM-SPH adaptive coupled model has obvious advantages in calculation accuracy.

关 键 词：高速冲击 自适应耦合 蓝宝石 侵彻深度 有限元 

分 类 号：O385[理学—流体力学]