基于火药燃气压力空间变化的火炮发射动力学研究
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摘要
针对身管振动对弹丸内弹道时期运动形态的激励作用,建立以振动理论为基础的弹丸与身管相互耦合问题的有限元动力学模型。通过用户自定义子程序实现了模块装药下弹丸膛内运动与火药燃烧规律相互关联的动力学过程,并实现了火药燃气压力作用于身管内壁并随弹丸运动而变化的荷载条件,解决了以往燃气压力径向效应加载不准甚至无法加载的问题,得到了在相同射击条件下试验测试数据和仿真计算结果的对比曲线,以及不同数值模拟环境下身管动力学时程曲线。结果表明该非线性动力学模型更能反映火炮实际发射环境,可以较真实地再现身管结构动力学响应过程,为火炮设计以及故障分析提供了更接近实际的参考数据。
Considering excitation action of barrel vibration on motion form of projectile in its inner-ballistic period,the finite element dynamic model for the mutual coupled problem between projectile and barrel based on the vibration theory was built. The user-defined subroutine was utilized to realize projectile dynamic process related to propellant combustion law under module charge,and realize the actual loading conditions varying with projectile motion during propellant gas pressure acting on barrel inner-wall,and solve the problem of gases pressure radial effect 's inaccurate loading or being unable to load in previous simulation. The curve comparison between test data and simulation results under the same shooting conditions was obtained. The barrel 's dynamic response time history curves under different simulation conditions were also gained. The results showed that the established nonlinear dynamic model can better reflect the actual artillery firing condition; it can more actually reveal barrel structural dynamic response process; it provides reference data closer to reality for artillery design and fault analysis.
Considering excitation action of barrel vibration on motion form of projectile in its inner-ballistic period,the finite element dynamic model for the mutual coupled problem between projectile and barrel based on the vibration theory was built. The user-defined subroutine was utilized to realize projectile dynamic process related to propellant combustion law under module charge,and realize the actual loading conditions varying with projectile motion during propellant gas pressure acting on barrel inner-wall,and solve the problem of gases pressure radial effect 's inaccurate loading or being unable to load in previous simulation. The curve comparison between test data and simulation results under the same shooting conditions was obtained. The barrel 's dynamic response time history curves under different simulation conditions were also gained. The results showed that the established nonlinear dynamic model can better reflect the actual artillery firing condition; it can more actually reveal barrel structural dynamic response process; it provides reference data closer to reality for artillery design and fault analysis.
引文
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[10]可学为,侯健,樊龙龙.火药燃气压力在身管中激发的振动[J].舰船电子工程,2009,29(10):188-190KE Xuewei,HOU Jian,FAN Longlong.Vibration of tube due to powder gases pressure[J].Ship Electronic Engineering,2009,29(10):188-190.
[11]曾志银,马明迪,宁变芳,等.火炮身管阳线损伤机理分析[J].兵工学报,2014,35(11):1736-1742.ZENG Zhiyin,MA Mingdi,NING Bianfang,et al.Analysis of rifling land damagemechanism of gun barrel[J].Acta Armamentarii,2014,35(11):1736-1742.
[12]刘广生,孙河洋,周伟.弹带挤进过程身管内壁损伤的数值模拟研究[J].振动与冲击,2015,34(13):78-82.LIU Guangsheng,SUN Heyang,ZHOU Wei.Numerical simulation for gun barrel bore damage during shells with into bore[J].Journal of Vibration and Shock,2015,34(13):78-82.
[13]曾志银,宁变芳,王在森.身管动态应力有限元通用求解方法[J].兵工学报,2005,26(6):7-10.ZENG Zhiyin,NING Bianfang,WANG Zaisen.Universal finite element solution method of gun barrel dynamic stress[J].Acta Armamentarii,2005,26(6):7-10.
[14]ZHANG X B,WANG Y Z.Analysis of dynamic characteristics for rarefaction wave gun during the launching[J].Journal of Applied Mechanics,2010,77(5):051601.
[15]李小珍,张志俊,刘全民.任意移动荷载列作用下简支梁桥竖向振动响应解析分析[J].振动与冲击,2012,31(20):137-142.LI Xiaozhen,ZHANG Zhijun,LIU Quanmin.Vertical dynamic response analysis of asimplysupported beam bridge under successive moving loads[J].Journal of Vibration and Shock,2012,31(20):137-142.
[16]惠旭龙,牟让科,白春玉,等.TC4钛合金动态力学性能及本构模型研究[J].振动与冲击,2016,35(22):161-168.HUI Xulong,MU Rangke,BAI Chunyu,et al.Dynamic mechanical property and constitutive model for TC4 titanium alloy[J].Journal of Vibration and Shock,2016,35(22):161-168.
[17]丁传俊,张相炎.基于热力耦合有限元模型的弹带挤进过程及内弹道过程的仿真研究[J].兵工学报,2015,36(12):2254-2261.DING Chuanjun,ZHANG Xiangyan.Simulation study of bearing band engraving process and interior ballistic process based on thermo-mechanical coupling FEA model[J].Acta Armamentarii,2015,36(12):2254-2261.
[2]STIAVNICKy M,LISy P.Influence of barrel vibration on the barrel muzzle position at the moment when bullet exits barrel[J].Advances in Military Technology,2013,8(1):89-102.
[3]姜沐,郭锡福.弹丸加速运动在身管中激发的振动[J].弹道学报,2002,14(3):57-62.JIANG Mu,GUO Xifu.On the vibration of tube due to accelerately moving projectile[J].Journal of Ballistics,2002,14(3):57-62.
[4]刘宁,杨国来.弹管横向碰撞对身管动力响应的影响[J].弹道学报,2010(2):67-70.LIU Ning,YANG Guolai.Effect of lateral impact between projectile and barrel on dynamic response of tube[J].Journal of Ballistics,2010(2):67-70.
[5]苏忠亭,徐达,李晓伟,等.小口径火炮弹炮耦合动态响应有限元时程分析[J].振动与冲击,2012,31(23):104-108.SU Zhongting,XU Da,LI Xiaowei,et al.Finite-element time-history analysis for dynamic responseof small-caliber guns with projectile-barrel coupling[J].Journal of Vibration and Shock,2012,31(23):104-108.
[6]SIDDIQUI S A Q,GOLNARAGHI M F,HEPPLER G R.Large free vibrations of a beam carrying a moving mass[J].International Journal of Non Linear Mechanics,2003,38:1481-1493.
[7]葛建立,杨国来,陈运生,等.基于弹塑性接触/碰撞模型的弹炮耦合问题研究[J].弹道学报,2008,20(3):103-106.GE Jianli,YANG Guolai,CHEN Yunsheng,et al.A study on the projectile-barrel coupling based on contact model[J].Journal of Ballistics,2008,20(3):103-106.
[8]许耀峰,丁宏民,徐坚,等.大口径火炮膛线结构对滑动弹带弹丸膛内运动影响的数值分析[J].兵工学报,2016,37(11):2148-2156.XU Yaofeng,DING Hongmin,XU Jian,et al.Numerical analysis of influence of rifling structure of large caliber gun on moving of projectile with sliding driving band in bore[J].Acta Armamentarii,2016,37(11):2148-2156.
[9]吴会民,宋春霞,王宝元,等.理想状态下弹丸身管耦合系统动力响应特性研究[J].火炮发射与控制学报,2013,132(4):90-94.WU Huimin,SONG Chunxia,WANG Baoyuan,et al.The study on the characters of the dynamic response of the coupled system of projectile moving in the barrel under ideal state[J].Journal of Gun Launch&Control,2013,132(4):90-94.
[10]可学为,侯健,樊龙龙.火药燃气压力在身管中激发的振动[J].舰船电子工程,2009,29(10):188-190KE Xuewei,HOU Jian,FAN Longlong.Vibration of tube due to powder gases pressure[J].Ship Electronic Engineering,2009,29(10):188-190.
[11]曾志银,马明迪,宁变芳,等.火炮身管阳线损伤机理分析[J].兵工学报,2014,35(11):1736-1742.ZENG Zhiyin,MA Mingdi,NING Bianfang,et al.Analysis of rifling land damagemechanism of gun barrel[J].Acta Armamentarii,2014,35(11):1736-1742.
[12]刘广生,孙河洋,周伟.弹带挤进过程身管内壁损伤的数值模拟研究[J].振动与冲击,2015,34(13):78-82.LIU Guangsheng,SUN Heyang,ZHOU Wei.Numerical simulation for gun barrel bore damage during shells with into bore[J].Journal of Vibration and Shock,2015,34(13):78-82.
[13]曾志银,宁变芳,王在森.身管动态应力有限元通用求解方法[J].兵工学报,2005,26(6):7-10.ZENG Zhiyin,NING Bianfang,WANG Zaisen.Universal finite element solution method of gun barrel dynamic stress[J].Acta Armamentarii,2005,26(6):7-10.
[14]ZHANG X B,WANG Y Z.Analysis of dynamic characteristics for rarefaction wave gun during the launching[J].Journal of Applied Mechanics,2010,77(5):051601.
[15]李小珍,张志俊,刘全民.任意移动荷载列作用下简支梁桥竖向振动响应解析分析[J].振动与冲击,2012,31(20):137-142.LI Xiaozhen,ZHANG Zhijun,LIU Quanmin.Vertical dynamic response analysis of asimplysupported beam bridge under successive moving loads[J].Journal of Vibration and Shock,2012,31(20):137-142.
[16]惠旭龙,牟让科,白春玉,等.TC4钛合金动态力学性能及本构模型研究[J].振动与冲击,2016,35(22):161-168.HUI Xulong,MU Rangke,BAI Chunyu,et al.Dynamic mechanical property and constitutive model for TC4 titanium alloy[J].Journal of Vibration and Shock,2016,35(22):161-168.
[17]丁传俊,张相炎.基于热力耦合有限元模型的弹带挤进过程及内弹道过程的仿真研究[J].兵工学报,2015,36(12):2254-2261.DING Chuanjun,ZHANG Xiangyan.Simulation study of bearing band engraving process and interior ballistic process based on thermo-mechanical coupling FEA model[J].Acta Armamentarii,2015,36(12):2254-2261.