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根据密封盖的性能指标和战术要求,选择玻璃纤维布为材料,设计结构。基于失效准则和损伤演化规律,利用有限元方法进行了火箭弹冲破穿透密封盖和燃气流冲击密封盖的数值仿真。分析了六种密封盖方案,掌握了破裂效果和规律。得到了能沿预设撕裂线方向破裂,满足引信体的安全性和可靠性要求;不产生碎片,不会对干扰到后续弹的发射;能承受邻管发射时燃气流冲击的密封盖。
According to the sealing cap performance indicators and tactical requirements, choose fiberglass cloth as the material, design the structure. Based on the failure criterion and damage evolution law, the numerical simulation of the rocket piercing through the seal cover and the gas flow impact seal cover was carried out by using the finite element method. Six kinds of sealing cap solutions were analyzed and the rupture effect and law were mastered. It can be ruptured in the direction of the preset tearing line to meet the safety and reliability requirements of the fuse body. No debris will be produced and the subsequent launchers will not be disturbed. Sealing covers that can withstand the impact of the gas flow when the adjacent tube is fired are obtained.