冲击作用下易碎式密封盖数值仿真及实验分析

Numerical simulation and experimental analysis of a crisp airproof lid under impact

1.
School of Vehicle and Power Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China;
2.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

摘要: 确定了易碎式密封盖的材料和结构，运用有限元法进行了火箭弹和燃气流冲击的数值仿真计算，通过冲破实验进行了间接验证，从而掌握了密封盖的破碎效果和性能。结果表明，密封盖能沿预置沟槽方向破裂，能满足引信体的安全性和可靠性，不影响火箭弹的正常飞行;燃气流冲击力对密封盖影响不大，不会对密封盖造成破坏。
- 固体力学 /
- 破碎 /
- 数值仿真 /
- 易碎式密封盖 /
- 冲击
Abstract: The material and structure of a crisp airproof lid was determined. Numerical calculations on the crisp airproof lid impacted by rocket projectile and fired-gas streams were carried out by the finite element method, and simulated results were experimentally validated. Fracture effects and performances of the airproof lid were obtained. Researched results show as follows： (1) The airproof lid can fracture along the preset slot, satisfies the reliability of the fuze and doesnt influence the natural work of the rocket. (2)Impact forces of fired-gas streams have so little effect on the airproof lid that the airproof lid cannt be destroyed.
- solid mechanics /
- fracture /
- numerical simulation /
- crisp airproof lid /
- impact