弹性体涂覆钢板抗冲击性能的数值模拟  

Numerical Simulation for Anti-blast Performances of Steel Plate Coated with Elastomer

作　　者：甘云丹[1] 宋力[1] 杨黎明[1] 

机构地区：[1]宁波大学力学与材料科学研究中心,浙江宁波315211

出　　处：《兵工学报》2009年第S2期15-18,共4页Acta Armamentarii

基　　金：海军预研项目(4010305020202-4)

摘　　要：采用LS-DYNA有限元软件数值模拟弹性体涂覆钢板在水下爆炸载荷作用下的动态响应及抗爆能力。在有限元模型中,方形钢板的边长为2 m,厚度为2 cm,弹性体涂层厚度为5 mm,其四边固支,置于水中。为了与涂覆钢板的抗爆炸冲击能力进行比较,同时也进行了与涂覆钢板等质量的单层钢板在相同爆炸载荷作用下的抗爆能力数值模拟。研究了在不同爆距情况下钢板的变形与破坏;通过7种工况的比较,分析和评估该涂覆技术的有效性。若以安全爆距作为评估钢板抗爆能力的依据,则研究结果表明,采用弹性体涂覆技术钢板的抗爆炸冲击能力提高了大约20%.The dynamic response and anti-blast capacity of the elastomer-coated steel plate subjected to underwater explosion loads were numerically simulated by using LS-DYNA finite element software.In the finite element model,a square plate is 2 m in side length,2 cm in thickness and coated with elastomer of 5 mm in thickness.The boundary of plate is fixed under water.In order to compare anti-blast performance of the elastomer-coated steel plate with that of the uncoated steel plate,the anti-blast performance of the uncoated steel plate was also simulated at the same mass and blast load as those of the elastomer-coated steel plate.The deformation and damage of the plates under different distances between plates and explosion location were studied;through the comparison of simulation results in seven conditions,the effectiveness of the coating technology was analyzed and evaluated.If the safety distance away from the explosion is used to assess the anti-blast capability,the simulated results show that the anti-blast capability of the steel plate coated with elastomer increases by 20% compared to the uncoated steel plate.

关 键 词：弹性体 涂覆钢板 水下爆炸 数值模拟 抗爆能力 

分 类 号：O347.3[理学—固体力学]