CAJ | 학술논문

弹丸起始扰动对火炮射击精度有重要影响，为了减小弹丸起始扰动，建立了某大口径轻型牵引炮弹炮耦合全炮动力学参数化有限元模型，由弹丸出炮口时刻弹丸的角位移、角速度表征弹丸起始扰动，构建优化目标函数，对火炮结构参数的影响程度进行灵敏度分析；同时利用径向基神经网络近似模型方法对弹丸起始扰动进行优化研究。结果表明，摇架臂板厚对弹丸起始扰动影响显著，优化后弹丸出炮口时刻弹丸角位移和角速度均明显减小。该结果可为火炮结构设计提供理论依据。
탄환기시우동대화포사격정도유중요영향，위료감소탄환기시우동，건립료모대구경경형견인포탄포우합전포동역학삼수화유한원모형，유탄환출포구시각탄환적각위이、각속도표정탄환기시우동，구건우화목표함수，대화포결구삼수적영향정도진행령민도분석；동시이용경향기신경망락근사모형방법대탄환기시우동진행우화연구。결과표명，요가비판후대탄환기시우동영향현저，우화후탄환출포구시각탄환각위이화각속도균명현감소。해결과가위화포결구설계제공이론의거。
Initial proj ectile disturbances have important influence on firing accuracy of the gun. A parametric and dynamical finite element model based on proj ectile-barrel coupling of a large caliber light towed howitzer was established to reduce initial proj ectile disturbance.By use of angular displacement and angular velocity of proj ectile flying out of muzzle to reflect initial pro-j ectile disturbance,the optimization obj ect function was established.The degree of influence of howitzer structural parameters on initial proj ectile disturbance was obtained by means of sensi-tivity analysis,and then the vital parameters were optimized to reduce initial proj ectile disturb-ance by means of the method of radial basis functions approximation models.The results showed that the thickness of arm plate had a notably significant effect on initial proj ectile dis-turbance,and the angular displacement and angular velocity of proj ectile flying out of muzzle were obviously reduced after the structural parameters were optimized.The results can provide theoretical guide for the structural design of the howitzer.