基于构型设计的包装容器缓冲效应数值分析

基于材料结构塑性变形能量耗散机理，提出了3种基于构型设计的安全包装容器，并采用Abaqus/Explicit有限元软件针对包装容器不同姿态自由跌落进行了数值模拟，分析了容器结构50 m高度自由跌落正碰、侧碰和斜碰金属靶体的冲击响应.数值结果给出了不同冲击环境下安全包装容器各部件变形及应力分布，讨论了不同结构形式包装容器的冲击缓冲性能.研究表明，3种构型设计的包装容器均能承受50 m高度自由跌落冲击，基于外壁凸起的薄壳结构和低阻抗宽平台应力材料填充方式的缓冲设计方法均能实现对被保护体有效的冲击防护. 

Numerical Simulation on Cushion Effect of Packaging Container with Configuration Design

Three packaging containers with configuration design were proposed according to material plastic deformation and energy dissipation theory. Numerical simulations of packaging container dynamic behavior under several drop conditions were carried out using finite element analysis software Abaqus/Explicit. Drop altitudes of normal, transverse and oblique impact were taken into account, and the drop height was 50 meters in the simulations. Stress and deformation distribution of container subjected to different impact cases were gained. Impact cushion properties of the three containers were discussed. The numerical results indicate the containers with configuration design can withstand the impact of 50 m free fall. Thin shell bulge and wide plateau stress are mainly energy dissipation ways for cushion material. It will help improve protected object''s safety under impact environment.