爆炸冲击下防护罩安全性能分析与优化设计

为验证弹药装配中防护罩结构设计的合理性,提高安全防护性能.针对15 mm厚的防护罩采用理论计算与静力学分析,判断出防护罩结构的失效区域,提出增加厚度到30 mm,顶部设置2个100 mm×100 mm方形泄爆口的改进方案,通过爆炸冲击过程动力学模拟,评估厚度、泄爆口对防护罩安全性能的影响.结果表明:在不改变外形尺寸的情况下,优化后的防护罩能够满足抗爆设计要求,从而防止意外事故下对设备和人员的伤害,为大当量装药的小尺寸防护罩设计提供参考.

Safety Performance Analysis and Optimization Design of Protective Cover Under Explosion Impact

In order to verify the rationality of protective cover structure design in ammunition assembly and improve safety protection performance. The failure area of 15 mm thick protective cover is judged by theoretical calculation and statics analysis, and the improvement scheme of adding wall thickness to 30 mm, with two 100 mm *100 mm square vent is put forward. The influence of wall thickness and vent on the safety performance of protective cover is evaluated by dynamic simulation of explosion impact process. The results show that the optimized protective cover can meet the requirements of anti-explosion design without changing the shape size, thus preventing the injury to equipment and personnel under accident, and providing reference for the design of small size protective cover for large amount charging.