侵彻体撞击冻土摩擦升温计算方法研究  

Study on calculation method of friction temperature rise by penetrator impacting frozen soil

作　　者：邵伟 SHAO Wei(Key Laboratory of Instrumentation Science and Dynamic Measurement,Ministry of Education,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《传感器与微系统》2023年第10期40-43,共4页Transducer and Microsystem Technologies

摘　　要：针对水冰探测过程中需要改变其物态以便于质谱分析的问题,提出了侵彻体撞击目标接触头处摩擦升温的计算方法。将侵彻体撞击冻土划分为“冻土”和“融土”阶段,高速移动热源摩擦升温法和侵彻体撞击冻土阻力法结合,提出了侵彻体撞击“冻土”阶段弹头处摩擦升温计算方法。利用仿真软件,得到了侵彻体以低于400 m/s的速度撞击时头部的升温曲线,与理论计算曲线基本一致,验证了摩擦升温函数的正确性。根据传热学理论,得到了系列速度下侵彻体撞击“冻土”阶段物态体积的改变量。Aiming at the problem that the state of water ice needs to be changed to facilitate mass spectrometry analysis in the process of water ice detection,a calculation method of friction temperature rise at the warhead where the penetrator impacts the target is proposed.The frozen soil impacted by the penetrator is divided into"frozen soil"and"thawed soil"stages.The friction temperature rise method of high-speed moving heat source is combined with the resistance method of the penetrator impacting the frozen soil,and the calculation method of friction temperature rise at the warhead in the stage of the penetrator impacting the"frozen soil"is proposed.Using simulation software,the temperature rise curve of the head when the penetrator impacts at a speed of less than 400m/s is obtained,which is basically consistent with the theoretical calculation curve,and the correctness of the friction temperature rise function is verified.According to the theory of heat transfer,the volume change of the state of the penetrator at the stage of impacting the"frozen soil"at a series of velocities is obtained.

关 键 词：深空探测 冻土物理学 冲击动力学 热力学 有限元分析 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] O350[自动化与计算机技术—计算机科学与技术]