变工况条件下的通用机枪身管温度场与烧蚀特性分析  

Analysis oftemperature field and ablation characteristics of general machine gun barrel under variable operating conditions

作　　者：刘振华 方峻[1] 杨晨[1] LIU Zhenhua;FANG Jun;YANG Chen(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵器装备工程学报》2022年第10期137-145,共9页Journal of Ordnance Equipment Engineering

摘　　要：针对不同工况条件和设计参数下通用机枪身管瞬态温度和烧蚀特性,建立了枪管有限元计算模型,研究了不同环境温度、射击模式、冷却周期射弹总量、镀铬层厚度、射击频率下身管温度场和烧蚀量变化规律,通过特定工况条件下射击试验发现:理论分析结果与试验结果较为符合。该理论分析方法和模型对枪管结构设计和寿命预测具有参考价值。Aiming at the transient temperature and ablation life of the general-purpose machine gun barrel under continuous firing, a two-dimensional finite element calculation model of the barrel was established, and the lower barrel under different environmental temperatures, firing modes, cooling cycles, chrome plating thickness, firing frequency and the change law of temperature field and ablation amountwere studied. The analysis results are more consistent with the test results, which provides a reliable theoretical basis for the barrel structure design and life prediction.

关 键 词：身管烧蚀 温度场 环境温度 射击模式 冷却周期 射击频率 镀铬层 

分 类 号：TJ24[兵器科学与技术—武器系统与运用工程]