Ballistic performance of additive manufacturing 316l stainless steel projectiles based on topology optimization method  

作　　者：Hao Xue Tao Wang Xinyu Cui Yifan Wang Guangyan Huang 

机构地区：[1]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Defence Technology（防务技术）》2024年第5期1-17,共17页Defence Technology

基　　金：sponsored by the National Key Research and Development Program of China[Grant Nos.2020YFC0826804 and 2022YFC3320504];the National Natural Science Foundation of China[Grant No.11772059]。

摘　　要：Material and structure made by additive manufacturing(AM)have received much attention lately due to their flexibility and ability to customize complex structures.This study first implements multiple objective topology optimization simulations based on a projectile perforation model,and a new topologic projectile is obtained.Then two types of 316L stainless steel projectiles(the solid and the topology)are printed in a selective laser melt(SLM)machine to evaluate the penetration performance of the projectiles by the ballistic test.The experiment results show that the dimensionless specific kinetic energy value of topologic projectiles is higher than that of solid projectiles,indicating the better penetration ability of the topologic projectiles.Finally,microscopic studies(scanning electron microscope and X-ray micro-CT)are performed on the remaining projectiles to investigate the failure mechanism of the internal structure of the topologic projectiles.An explicit dynamics simulation was also performed,and the failure locations of the residual topologic projectiles were in good agreement with the experimental results,which can better guide the design of new projectiles combining AM and topology optimization in the future.

关 键 词：Additive manufacturing Topology optimization Ballistic performance Projectile design 

分 类 号：TJ05[兵器科学与技术—兵器发射理论与技术]