冲击荷载作用下泄爆板破坏冲量计算与模拟  

Simulation and calculation for the destroy impulse of vent panels with impact effect

作　　者：由泽伟 王源[1] 张清华[1] 章征林 黄肖迪 YOU Zewei WANG Yuan ZHANG Qinghua ZHANG Zhenglin HUANG Xiaodi(State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact,PLA University of Science and Technology,Nanjing 210007, China)

机构地区：[1]解放军理工大学爆炸冲击防灾减灾国家重点实验室,南京210007

出　　处：《振动与冲击》2017年第12期83-87,共5页Journal of Vibration and Shock

基　　金：国家重点基础研究发展计划(973)项目(2010CB732003;2013CB036005)

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。This work ai m s to solve the problem of the vent panel,s destroy with blast load. B a s e d o n the yield line heory of the two-way four e d ges fixed p a n e l, the failure m e c h a n i s m w a s a n a l y z e d. T h e criteria of im p u l s e failure w a s retended and the formula of destroy im p u l s e w a s derived. Simulation w a s carried out b y A N S Y S /L S - D Y N A . T h e results gree to theoretical analysis, which confirm venting capacity of vent panels c a n b e m e a s u r e d b y i m p u l s e. T h e factors ffecting destroy impulse were a n a l y z e d. The strength of extension a n d thickness is the most important factors ; however, he elasticity modulus and Poisson＇s ratio havea little effect. The ways of improving venting capacity was offered.

关 键 词：泄爆板 破坏冲量 冲击荷载 塑性铰线 泄爆能力 

分 类 号：TU312.3[建筑科学—结构工程]