身管热变形对步枪射击影响分析
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摘要
为了研究温度变化对枪械射击准确度的影响,建立某步枪枪管的数值仿真模型。为了研究热冲击作用下枪管温度的分布情况,根据非线性热力学对枪管内壁与外壁的对流传热以及内膛的传热进行数值分析。再将仿真得到的温度场施加在身管上,采用非线性热力学结构耦合,求解出不同温度场分布下的枪管变形程度,并分析了身管弯曲对瞄准基线的影响。通过与实验数据的对比,验证了仿真结果具有可信性,为射击过程中的修正偏差提供重要理论依据。
In order to study the effect of temperature changes on the accuracy of firearm shooting,establish a numerical simulation model of a rifle barrel.In order to study the distribution of barrel temperature under thermal shock,numerical analysis of convective heat transfer and internal heat transfer of the inner and outer walls of the barrel according to nonlinear thermodynamics.Applying the simulated temperature field to the body tube,nonlinear thermodynamic structural coupling,solve the deformation of the barrel under different temperature field distributions,and analyzed the effect of body tube bending on the aiming baseline.The simulation results are verified to be credible by comparison with experimental data,provide an important theoretical basis for correcting deviations during shooting.
In order to study the effect of temperature changes on the accuracy of firearm shooting,establish a numerical simulation model of a rifle barrel.In order to study the distribution of barrel temperature under thermal shock,numerical analysis of convective heat transfer and internal heat transfer of the inner and outer walls of the barrel according to nonlinear thermodynamics.Applying the simulated temperature field to the body tube,nonlinear thermodynamic structural coupling,solve the deformation of the barrel under different temperature field distributions,and analyzed the effect of body tube bending on the aiming baseline.The simulation results are verified to be credible by comparison with experimental data,provide an important theoretical basis for correcting deviations during shooting.
引文
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[14]王虹琴,苏铁熊,王东华,等.基于ADAMS机枪射击稳定性动力学仿真分析[J].兵器装备工程学报,2017(12):17-20.
[15]蓝维彬,杨臻.身管温度对步枪射击影响[J].兵器装备工程学报,2017(10):25-29.
[2]赵金辉,何忠波,傅建平,等.火炮发射过程中身管温度场及弯曲度有限元计算[J].火力与指挥控制,2011,36(5):106-109.
[3]李杨,管小荣,徐诚.高精度步枪系统射击密集度仿真分析方法研究[J].火力与指挥控制,2015,40(11):111-114.
[4]刘国庆,徐诚.弹/枪相互作用引起的运动步枪枪口振动分析[J].火力与指挥控制,2016,41(12):69-73.
[5]刘建军,陈红军.身管弯曲对射击精度影响及修正模型研究[J].舰船电子工程,2011,31(7):155-157.
[6]曹帅,徐诚.温度对某枪管材料力学性能影响试验[J].兵器装备工程学报,2017,38(2):159-162.
[7]曹帅.某自动步枪冷热枪状态差异分析与研究[D].南京:南京理工大学,2017.
[8]张艳蓉.某大口径狙击步枪枪管弯曲变形的分析与研究[D].南京:南京理工大学,2016.
[9]李强,李鹏辉,赵君官,等.冲击载荷下自增强身管残余应力变化规律[J].爆炸与冲击,2011,31(6):635-640.
[10]WELTY C E,WICKS C,WILSON R E.Fundamentals ofmomentum,heat,and mass transfer[M]. New York:Mc-Graw-Hill Companies,1984:139-162.
[11]冯国铜,周克栋,赫雷,等.环境因素对枪管温度场的影响[J].工程热物理学报,2016,37(11):2409-2416.
[12]高博,胡国新,张振仕. 95式自动步枪特点及其对射击技能的要求[J].军事体育进修学院学报,2011,30(1):82-85.
[13]卓穗如.机枪连续射击时枪管温度的测试及膛面温度的推算[J].兵工学报,1990,11(2):1-7.
[14]王虹琴,苏铁熊,王东华,等.基于ADAMS机枪射击稳定性动力学仿真分析[J].兵器装备工程学报,2017(12):17-20.
[15]蓝维彬,杨臻.身管温度对步枪射击影响[J].兵器装备工程学报,2017(10):25-29.