A numerical simulation of metallic sandwich shell subjected to air blast loading
The dynamic mechanical behavior of aluminum foam sandwich shells subjected to air blast loading was investigated numerically in this paper. The nonlinear compressibility of the air and finite shock conditions were taken into account in the FE model. Numerical simulation results show that the core compression strain plays the key role of energy absorption, and increases approximately linearly with normalized impulse, and reduces with increasing relative density and the ratio of face thickness and core thickness. An increase of the impulse will delay the equalization of top and bottom face velocities of sandwich shell, but there is a maximum in the studied bound. A limited study of weight optimization is carried out for sandwich shell with respect to the respective geometric parameters, including face sheet and core thiclness and relative density. The numerical results are of worth to theoretical prediction and engineering application of cellular metal sandwich structures.
动态响应 KNR理论 优化设计 数值模拟
Lin Jing Jianhui Fan Zhihua Wang Longmao Zhao
Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology,Taiyuan 030024, China
国内会议
太原
英文
1-8
2011-07-01（万方平台首次上网日期，不代表论文的发表时间）