摘要
为避免航行器结构破坏和电子器件失灵,可以利用入水时的跳弹现象减小入水冲击。本文通过实验方法探究了入水条件对航行器入水过程的影响,研究了不同速度和角度下航行器的跳弹/下沉过程,得到了一个可以预测航行器跳弹/下沉的经验公式。撞水瞬间航行器的头部会受到很大的冲击力,利用CFX软件对航行器不同工况入水过程进行了仿真,计算了不同工况下航行器的压力响应曲线,可以为航行器高速入水时减小入水冲击力提供参考。
The ricochet phenomenon can be used to reduce the water-entry impact force that may cause the vehicle destruction and failure of the internal electronic devices.The influences of incident conditions on wa⁃ter-entry process are investigated by experiments to study the ricochet/sinking process under different inci⁃dent velocities and angles,and an empirical formula is obtained to predict the ricochet/sinking after impact⁃ing on water.The impact force is analyzed by numerical simulations in the whole water-entry process under different conditions.The conclusions can provide reference for reducing the impact force when the vehide en⁃ters the water at high speed.
作者
陈国明
刘安
胡俊华
冯金富
颜奇民
CHEN Guo-ming;LIU An;HU Jun-hua;FENG Jin-fu;YAN Qi-min(Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038,China)
出处
《船舶力学》
EI
CSCD
北大核心
2020年第5期611-617,共7页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(51779263)。
关键词
跳弹
冲击力
入射条件
数值仿真
ricochet
impact force
incident conditions
numerical simulation
