摘要
大直径舱箭在分离时会产生巨大的冲击,会直接影响火箭运载的稳定性以及安全性。针对大直径舱箭分离产生巨大冲击的问题,提出一种基于颗粒阻尼技术的舱箭降冲用阻尼盒系统设计方法。通过建立舱箭降冲用阻尼盒系统离散元模型,并根据颗粒系统能量耗散大小,对阻尼盒填充参数进行优化,并通过实验分析了各填充参数下加速度响应。实验数据表明,安装舱箭降冲用阻尼盒后,舱箭分离时产生的冲击载荷在原基础上可实现50%以上的降冲击效果,该结果也验证了理论和仿真模型的正确性。
Large-diameter cabin arrows will produce a huge impact when separated,which directly affects the stability and safety of rocket delivery.Aiming at the problem of huge impact caused by the separation of large-diameter cabin arrows,a design method for damping box system for cabin arrow descent based on particle damping technology is proposed.By establishing a discrete element model of the damping box system for the downshoot of the cabin arrow,and optimizing the filling parameters of the damping box according to the energy dissipation of the particle system,the acceleration response under each filling parameter is analyzed experimentally.Experimental data show that after installing the damping box for the downshoot of the cabin arrow,the impact load generated when the cabin arrow is separated can achieve more than 50%of the impact reduction effect on the original basis,and the results also verify the correctness of the theoretical and simulation models.
作者
肖望强
戴宇
孙璟
彭帅
XIAO Wangqiang;DAI Yu;SUN Jing;PENG Shuai(School of Aerospace Engineering,Xiamen University,Xiamen 361000,China;Beijing Institute of Aerospace Systems Engineering,Beijing 100076,China)
出处
《宇航总体技术》
2022年第5期18-25,共8页
Astronautical Systems Engineering Technology
基金
国家自然科学基金项目(51875490)。
关键词
舱箭分离
舱箭降冲击
离散元模型
颗粒阻尼
Cabin arrow separation
Cabin arrows drop shock
Discrete element models
Particle damping
