爆炸与冲击2018，Vol.38Issue(1)：140-147,8.DOI:10.11883/bzycj-2017-0017
爆炸载荷作用下具有可折叠芯层夹芯梁的动态响应
Dynamic response of sandwich beam with foldable core under blast loading
摘要
Abstract
In this study four different honeycomb cells were fabricated by changing the original folding angle based on the Tachi-origami pattern that is at present being studied widely,and sandwich beams were made from them by arranging them specifically.The quasi-static mechanical response of the foldable core and dynamic response of the sandwich beam with different foldable core shapes was investigated using the commercial package ABAQUS/explicit.The out-plane Poisson ratio's variation of the foldable core,the back-sheet deflection and the plastic dissipation energy of the sandwich beam were analyzed and compared with the monolithic beam.The anti-explosive performance of the sandwich beams was evaluated by the maximum deflection of the back-sheet.The results show that there is a negative Poisson ratio's performance of the foldable core under quasi-static loading.The blast resistance of the sandwich beam is better than that of the monolithic one.The effect of the original folding angle on the dynamic response is very obvious for the curved web honeycomb.The blast-resistant performance decreases gradually as the original folding angle increases.The blast resistance of the sandwich beam with a straight web honeycomb core is comparatively the worst among the four honeycomb cores.关键词
可折叠曲边蜂窝/夹芯梁/动态响应/能量吸收Key words
foldable curved web honeycomb/sandwich beam/dynamic response/energy absorption分类
数理科学引用本文复制引用
张培文,李世强,王志华,赵隆茂..爆炸载荷作用下具有可折叠芯层夹芯梁的动态响应[J].爆炸与冲击,2018,38(1):140-147,8.基金项目
国家自然科学基金项目(11572214) （11572214）
山西省自然科学基金项目(2013011005-2) （2013011005-2）
汽车车身先进设计制造国家重点实验室开放基金资助项目(31615008) （31615008）
