考虑弹丸与身管轴向运动耦合的火炮系统时变动力学分析

张志新;胡振东

振动与冲击 ›› 2013, Vol. 32 ›› Issue (20) : 67-71.

PDF(1127 KB)
PDF(1127 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (20) : 67-71.
论文

考虑弹丸与身管轴向运动耦合的火炮系统时变动力学分析

  • 张志新 , 胡振东
作者信息 +

The research of artillery time-varing dynamics system considering thecoupling between bullet’s moving and barrel’s axial movement

  • ZHANG Zhi-xin , HU Zhen-dong
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摘要

将火炮发射系统简化为移动质量作用下的轴向运动悬臂梁,基于伯努利-欧拉梁理论和广义Hamilton原理,推导了考虑梁内张力的轴向运动梁振动方程。采用变量替换的方法把时变振动方程转换为固定区域的变系数微分方程。再用假设模态法和Galerkin法对控制微分方程进行空间离散求解。利用高精度时间有限元求解该时变方程,用两个算例验算振动方程的准确性。最后数值模拟移动弹丸对身管横向振动的影响。

Abstract

The artillery system is simplified to an axially moving cantilever beam under the action of a moving mass. The axially moving beam’s vibration control equation that considering beam’s tension was obtained based on the Bernoulli-Euler theory and Hamilton principle. Using assumed mode method and Galerkin Discrete method to solve this vibration control equation. The difference between considering and unconsidering axial movement in artillery model was be analyzed by by numerical simulation. And considering the influence of initial disturbance on transverse displacement of the beam’s top.


关键词

轴向运动 / 移动质量 / 火炮系统 / 时变动力学

Key words

axial movement / moving mass / artillery system / time-varying dynamics

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导出引用
张志新;胡振东. 考虑弹丸与身管轴向运动耦合的火炮系统时变动力学分析[J]. 振动与冲击, 2013, 32(20): 67-71
ZHANG Zhi-xin;HU Zhen-dong. The research of artillery time-varing dynamics system considering thecoupling between bullet’s moving and barrel’s axial movement [J]. Journal of Vibration and Shock, 2013, 32(20): 67-71

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