冲击荷载作用下泄爆板破坏冲量计算与模拟

发布时间：2018-04-20 13:42

本文选题：泄爆板 + 破坏冲量　；参考：《振动与冲击》2017年12期

【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。
[Abstract]:According to the failure theory of the plastic hinge line of bidirectional plate, the failure mechanism of the explosion-releasing plate in industrial factory building is analyzed theoretically according to the failure problem of explosion load. The impulse failure criterion of flameproof plate is put forward, and the calculation formula of failure impulse is deduced. The numerical simulation by ANSYS/LS-DYNA is compared with the theoretical results. It is proved that the damage of the plate can be measured by impulse. This paper analyzes on the factors influencing the explosion-releasing ability of the venting plate: the flexural strength and the thickness of the plate are the main factors, while the elastic modulus and Poisson's ratio have relatively little influence on the failure impulse. The method of improving the venting ability of the venting plate in industrial production is put forward.
【作者单位】：解放军理工大学爆炸冲击防灾减灾国家重点实验室;
【基金】：国家重点基础研究发展计划(973)项目(2010CB732003;2013CB036005)
【分类号】：TU312

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