论文部分内容阅读
针对火炮身管振动对射击精度的影响问题,分析了射频对身管振动的激励作用,提出了通过改变身管边界约束条件进而改变身管振动特性的方法,建立了身管固有频率对支撑位置变化的1阶灵敏度模型。并以某小口径身管为研究对象,运用该模型对支撑位置进行优化搜索,最终从频率和振型两方面确定了炮口横向振动响应最小的最优支撑位置。试验结果表明该方法改善了身管的振动特性,提高了火炮连发射击的立靶密集度。
Aiming at the problem of gun barrel vibration impact on shooting precision, the excitation of barrel vibration by radio frequency is analyzed, and the method of changing the barrel boundary condition to change the vibration characteristics of barrel is proposed. The effect of barrel natural frequency on the support position First-order sensitivity model of change. Taking a small caliber tube as the research object, this model is used to optimize the search for the support position. Finally, the optimal support position with the smallest muzzle horizontal vibration response is determined from the frequency and mode shapes. The experimental results show that the method improves the vibration characteristics of the barrel and increases the target concentration of the continuous fire.