摘要
为研究聚脲涂层对抗爆结构防护性能影响,提出了一种聚脲增强多层复合抗爆结构,分析了抗爆结构在冲击波与破片联合载荷作用下的防护特性。计算并获取了炸药的超压拟合公式,采用激光三维扫描仪测量了抗爆结构在联合载荷作用下的离面位移,超压与位移的实验结果与模拟结果吻合较好。研究结果表明,聚脲涂层所在的位置极大地影响抗爆结构的防护效果。涂层位于夹芯钢板迎爆面时的防护效果比涂层位于面板以及夹芯钢板的背爆面更好,可以有效减少破片的穿透率与着靶数,削弱联合载荷最终作用于背板的能量,降低背板中心的振动幅度与振动加速度。这项研究可以为多层抗爆结构的设计提供参考。
In order to investigate the effect of polyurea coating on the protective performance of blast-resistant structure,a multi-layer blast-resistant structure reinforced with polyurea is proposed,and the protective characteristics of blast-resistant structure under the actions of shock wave and fragments are analyzed.The overpressure fitting formula of explosive is calculated and obtained,and out-of-plane displacement of blast-resistant structure is measured using a laser 3D scanner.Experimental results of overpressure and displacement are in good agreement with simulated results.Research results show that the position of polyurea coating has great effects on the protective ability of blast-resistant structure.The protective effect of coating located on blast-facing side of sandwich steel plate is better than those of coating located on the back-blast sides of face plate and sandwich steel plate.It can effectively reduce the penetration rate and impact number of fragments,weaken the energy of the combined load ultimately acting on the back plate,and reduce the vibration amplitude and acceleration at the center of back plate.This study can provide a reference for the design of multi-layer blast-resistant structure.
作者
马东
王成
邵楠
韦建树
MA Dong;WANG Cheng;SHAO Nan;WEI Jianshu(State Key Laboratory of Explosion Science and Safety Protection,Beijing Institute of Technology,Beijing 100081,China;Jiangsu Juege Industrial Group Co.,Ltd.,Yancheng 224100,Jiangsu,China)
出处
《兵工学报》
北大核心
2025年第7期109-120,共12页
Acta Armamentarii
基金
国家自然科学基金项目(12221002)
北京市自然科学基金项目(L212018)。
关键词
冲击波
破片
联合载荷
抗爆结构
聚脲
shock wave
fragment
combined load
blast-resistant structure
polyurea
