Dynamic response of thin-wall circular tubes under transverse blast loading

被引：0
|
作者：
Yu B. [1 ,2 ]
Feng G. [1 ,2 ]
Li S. [1 ,2 ]
Liu Z. [1 ,2 ]
机构：
[1] Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan, 030024, Shanxi
[2] Shanxi Key Laboratory of Material Strength and Structural Impact, College of Mechanics, Taiyuan University of Technology, Taiyuan, 030024, Shanxi
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2019年 / 39卷 / 10期
关键词：
Beam-on-foundation; Blast loading; Circular tube; Finite element; Modal solution;
D O I：
10.11883/bzycj-2018-0295
中图分类号：
学科分类号：
摘要：
In this paper we investigated the dynamic response of thin-wall circular tubes under lateral blast loading based on experimental research, theoretical analysis and finite element simulation. We studied the dynamic responses of the tubes under explosion using the ballistic pendulum system and analyzed the deformation modes of the thin-wall tubes, and based on the foundation beam model, established a theoretical model of the mid-span deflection of the circular tube under lateral blast loading and made it dimensionless. We also analyzed the influence of the geometric parameters of the circular tube on its deformation mode and mid-span deflection using finite element simulation and compared it with the theoretical prediction. The results show that the deformed area and the mid-span deflection of the circular tube increase with the increase of the TNT mass. The length-to-diameter ratio, wall-thickness of the circular tube and the loading impulse all have a great influence on the mid-span deflection of the circular tube. The theoretical prediction and the numerical results are both in good agreement with the experimental results. © 2019, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
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