湖南大学学报（自然科学版）2019，Vol.46Issue(1)：32-46,15.DOI:10.16339/j.cnki.hdxbzkb.2019.01.004
Ⅰ-Ⅴ型夹芯板在近爆冲击波和破片群联合作用下防爆性能研究
Research on Explosion Protective Properties of Ⅰ-Ⅴ Sandwich Panel under Combined Loading of Close-range Blast Wave and Fragments
摘要
Abstract
This paper presents a new Ⅰ-Ⅴ type sandwich panel structure for civil building wall and plate, and uses the nonlinear finite element software LS-DYNA to study the explosion protection properties of Ⅰ-Ⅴ type sand-wich panel under the combined loading of close-range blast wave and fragments. In terms of three aspects of mass loss, energy absorption and vertical peak displacement response, the influence of the explosive proportion distance, explosive initiation position on the protection effect of sandwich panels and the actual protective performance of sandwich panels were studied. The results show that the ratio of explosive distance has great influence on the protec-tive performance of Ⅰ-Ⅴ type sandwich panels. The damage degree of different explosive initiation points to Ⅰ-Ⅴ type sandwich panels is different, and the number of initiation points in axial direction can not significantly increase the damage degree of Ⅰ-Ⅴ sandwich panels. There is only a small amount of detached concrete and no reinforcement ex-posed on the front surface, while on the back surface, no concrete falls off and no reinforcement exposes with lesser plastic deformation area, and there is no penetrating damage to the whole with the protection of Ⅰ-Ⅴ sandwich panels.The damage degree of the reinforced concrete slab with Ⅰ-Ⅴ sandwich panel is far less than that of the unprotected concrete slab.关键词
冲击波/破片群/联合作用/夹芯板/结构防护设计Key words
shock wave/fragments/joint action/sandwich panel/structural protection design分类
建筑与水利引用本文复制引用
田力,胡建伟..Ⅰ-Ⅴ型夹芯板在近爆冲击波和破片群联合作用下防爆性能研究[J].湖南大学学报（自然科学版）,2019,46(1):32-46,15.基金项目
国家自然科学基金资助项目(51238007,51178310) （51238007,51178310）
