高阻尼橡胶填充钢制防护门动力响应数值模拟

摘要

Based on the LS-DYNA finite element software,the dynamic response of ordinary steel protective door and high damping rubber filling protective door under the impacting of explosive shock wave are studied.The numerical simulation results show that:The existence of high damping rubber filling layer effectively improves the stress distribution of the panel,which attenuates the peak stress by 23.8％;The existence of high damping rubber also reduces the center maximum deformation of the door backplane by the amount of 62％,which significantly improves the carrying capacity of the door and the ability to resist deformation under the action of the shock wave.High damping rubber shows a good shock wave attenuation characteristics.%利用LS-DYNA有限元软件,对普通钢制和含高阻尼橡胶填充层两种防护门在爆炸冲击波作用下的动力响应进行了研究.数值模拟结果表明:高阻尼橡胶填充层的存在有效改善了面板的应力分布状态,衰减应力峰值达23.8％;减小门体背板跨中最大变形量达62％,显著提高了门体在爆炸冲击波作用下的承载能力和抵抗变形能力,表现出良好的冲击波衰减特性.