爆炸冲击波与破片联合作用下泡沫夹芯板的毁伤特性研究  

Study on Damage Characteristic of Foam Sandwich Panel Under Combined Action of Explosion Shock Wave and Fragments

作　　者：蔡林刚 杜志鹏 李晓彬[2] 张磊 李营 CAI Lingang;DU Zhipeng;LI Xiaobin;ZHANG Lei;LI Ying(Naval Research Academy, Beijing 102401, China;School of Transportation, Wuhan University of Technology, Wuhan 430063, China)

机构地区：[1]海军研究院,北京102401 [2]武汉理工大学交通学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2020年第2期316-320,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国防基础研究项目(B1420133057);国家自然科学基金(11302259);非线性力学国家重点实验室开放基金(LNM201505);中央高校基本科研业务费专项资金(2014-yb-20)资助。

摘　　要：开展了泡沫铝板在空中爆炸冲击波与高速破片联合作用下的动态响应与毁伤实验,分析了不同爆炸距离对泡沫铝靶板穿孔分布特性、芯层毁伤特点、背板毁伤形态的影响,讨论了背板花瓣形破口的形成机理.研究表明:装药驱动预制破片一种产生爆炸冲击波和破片联合载荷的有效方法;泡沫铝夹芯板在爆炸冲击波与破片群联合作用下产生多种破坏模式,其中泡沫铝夹芯板芯层存在局部穿孔、芯层剪切、芯层与后面板的界面失效等破坏模式,背板蜂窝状孔群和花瓣开裂等不同模式;泡沫夹心板背板中心在破片较为密集的情况下易产生类似于局部接触爆炸作用时的花瓣开裂,宜选用抗拉性能较好的材料.The dynamic response and damage experiments of foam aluminum panel under the combined action of air explosion shock wave and high-speed fragments were carried out.The effects of different explosion distances on the perforation distribution characteristics,core damage characteristics and damage morphology of the back plate were analyzed.Meanwhile,the formation mechanism of petal-shaped crevasses of the back plate was discussed.The research shows that it is an effective method to generate the combined load of blast wave and fragments by driving prefabricated fragments with explosive charge.Foam aluminum sandwich panels produce various failure modes under the combined action of explosion shock wave and fragment groups.Among them,there are a series of failure modes in the core layer of foam aluminum sandwich panel,such as local perforation,shear of core layer and interface failure between core layer,etc.The backboard has damage modes such as honeycomb-shaped pore groups and petal cracking.In the case of dense fragments,the center of back plate is prone to petal cracking similar to that of local contact explosion,and materials with better tensile properties should be selected.

关 键 词：耦合毁伤 泡沫铝夹芯板 联合作用 爆炸破片 空中爆炸 

分 类 号：U663.9[交通运输工程—船舶及航道工程]