冲击荷载作用下泄爆板破坏冲量计算与模拟

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摘要针对工业厂房中的泄爆板在爆炸荷载作用时的破坏问题，根据双向板塑性铰线破坏理论，对其破坏机理进行理论分析。提出了泄爆板的冲量破坏准则，并推导破坏冲量的计算公式。运用ANSYS/LS-DYNA进行数值模拟，与理论结果进行对比，两者吻合较好，证明可以用冲量衡量泄爆板的破坏。分析了影响泄爆板泄爆能力的因素：抗折强度与板的厚度是主要影响因素，而弹性模量及泊松比对破坏冲量的影响相对较小，提出了工业生产中提升泄爆板泄爆能力的方法。

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	由泽伟
	王源
	张清华
	章征林
	黄肖迪

Abstract：Focus on the problem of the vent panel’s destroy with blast load. Based on the yield line theory of the two-way four edges fixed panel, The failure mechanism is analyzed.The criteria of impulse failure is pretended and the formula of destroy impulse is derived.Simulation is carried out by ANSYS/LS-DYNA and the results correspond to theoretical analysis, which confirm venting capacity of vent panels can be measured by impulse. The factors which affect destroy impulse are analyzed.The strength of extension and thickness is the most important factors,however,the elasticity modulus and poisson’s ratio have a little effect.The ways of improving venting capacity is offered.

Key words： vent panel destroy impulse blast load yield line theory；venting capacity steel fiber

收稿日期: 2016-04-01 出版日期: 2017-06-15

引用本文:

由泽伟，王源，张清华，章征林，黄肖迪. 冲击荷载作用下泄爆板破坏冲量计算与模拟[J]. 振动与冲击, 2017, 36(12): 83-87.
You Zewei,Wang Yuan,Zhang Qinghua,Zhang Zhenglin，Huang Xiaodi. The Simulation and Calculation for the destroy impulse of vent panels with impact effect. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(12): 83-87.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2017/V36/I12/83

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