金属加筋板局部爆炸冲击荷载研究

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 93-97,1.

论文

金属加筋板局部爆炸冲击荷载研究

白志海; 蒋志刚; 严波; 宋殿义

作者信息 +

Study on localized blast loading of stiffened metal plates

BAI Zhi-hai; JIANG Zhi-gang; YAN Bo; SONG Dian-yi

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文章历史 +

摘要

运用非线性动力有限元软件LS-DYNA对近距离局部爆炸冲击金属加筋板进行了三维数值模拟，并主要分析了加筋板的局部爆炸冲击荷载。首先基于文献试验，验证了数值模拟技术的合理性；进而分析了爆炸冲击荷载的主要影响因素，结果表明：爆炸冲击荷载随加筋板等效刚度的增加而增大，而加筋形式和板的开裂对冲量荷载的影响不大，可以忽略。最后依据数值模拟结果，提出了金属加筋板的近距离局部爆炸冲量荷载模型。

Abstract

3-D numerical simulations of stiffened metal plates' dynamic responses under close-range localized blast loading are carried out with the finite element software LS-DYNA, and the blast loading on the stiffened plates is analyzed primarily. The rationality of simulation technology is verified by comparing the simulation results to the published experiments. The main influencing factors of blast loading are analyzed. The numerical results show that the blast loads increase with the increase of equivalent rigidity of stiffened plates, and the stiffeners' configuration and plates' fracture have little influence on the impulsive loading. Based on the simulation results, a loading model for stiffened metal plates under close-range localized blast is proposed.

导出引用

白志海;蒋志刚;严波;宋殿义. 金属加筋板局部爆炸冲击荷载研究[J]. 振动与冲击, 2011, 30(12): 93-97,1

BAI Zhi-hai;JIANG Zhi-gang;YAN Bo;SONG Dian-yi. Study on localized blast loading of stiffened metal plates[J]. Journal of Vibration and Shock, 2011, 30(12): 93-97,1