爆炸冲击波和破片联合作用下玻璃纤维夹芯复合结构毁伤特性实验研究

发布时间：2018-07-27 14:49

【摘要】：为研究爆炸冲击波和破片联合作用下复合夹芯结构的防护能力和毁伤机理,采用TNT和预制破片开展了冲击波和破片联合作用下玻璃纤维夹芯结构的联合毁伤实验。研究玻璃纤维复合夹芯结构的毁伤特性,将其防护能力与芳纶、高强聚乙烯复合夹芯结构进行了量化对比,并分析了冲击波和破片联合作用下复合夹芯结构前面板、芯层、后面板的破坏模式及相应破坏机理。结果表明:选用复合夹芯结构抗冲击波和破片联合毁伤时,同等防护能力所需E玻璃纤维芯层重量分别为芳纶芯层、高强聚乙烯芯层的1.37倍、2.50倍;前面板破坏模式主要由冲击波载荷、破片载荷、芯层约束3方面因素共同决定;破片载荷对芯层破坏模式起主要作用,后面板破坏模式与芯层碰撞、破片载荷两方面因素有关,其中冲击波载荷和芯层碰撞为面载荷,使前后面板产生整体弯曲变形,破片载荷为点载荷,使面板和芯层产生局部的穿甲破孔,芯层约束限制了前面板变形空间。
[Abstract]:In order to study the protective ability and damage mechanism of the composite sandwich structure under the combined action of blast wave and fragment, the combined damage experiment of glass fiber sandwich structure under the combined action of shock wave and fragment was carried out by using TNT and prefabricated fragments. The damage characteristics of glass fiber composite sandwich structure are studied. The protective ability of glass fiber sandwich structure is compared quantitatively with that of aramid and high strength polyethylene sandwich structure. The front panel and core layer of composite sandwich structure under the combined action of shock wave and fragment are analyzed. The failure mode of the rear panel and the corresponding failure mechanism. The results show that when the composite sandwich structure is used to resist shock wave and fragment damage, the weight of E glass fiber core layer is 1.37 times than that of high strength polyethylene core layer, and the weight of E glass fiber core layer is 1.37 times than that of high strength polyethylene core layer. The failure mode of front panel is mainly determined by three factors: shock wave load, fragment load and core layer constraint. The shock wave load and the core layer collision are the surface loads, which make the front and rear panels bending deformation and the fragment load as the point load, make the face panel and core layer produce local armour-piercing holes, and the core layer constraints the deformation space of the front panel.
【作者单位】：海军工程大学舰船工程系;中国舰船设计中心;
【基金】：国家自然科学基金项目(51679246、51409253、51479204)
【分类号】：O383

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