摘要振动特性是火炮武器系统固有特性之一。自行火炮的振动特性与其射击精度等动态 性能有很大关系，火炮武器具有良好动态性能的前提是固有频率的合理分布。用多体系 统传递矩阵法能够很好的解决刚弹耦合复杂系统的振动特性问题。本文基于多体系统传 递矩阵法，根据自行火炮武器的结构特性，建立自行火炮系统动力学模型和动力学模型 拓扑图。推导了自行火炮系统各个部件的传递方程和传递矩阵，进而推导出系统总传递 方程和传递矩阵。利用Matlab计算机软件，编制了自行火炮系统振动特性仿真程序，仿真 获得了自行火炮系统的频率和振型，分析了地面联接刚度对自行火炮振动频率的影响， 为自行火炮发射动力学计算和提高其射击精度奠定了基础。79510

毕业论文关键词 自行火炮 振动特性 固有频率 多体系统矩阵法

毕 业 设 计 说 明 书 外 文 摘 要

Title Simulation of Vibration Characteristics of a Self Propelled Gun

Abstract Vibration characteristics is one of the inherent characteristics of artillery weapon system。 The dynamic performance of the self propelled gun is greatly related to the dynamic performance of the firing accuracy。 The premise of the good dynamic performance of the artillery weapon is the reasonable distribution of the natural frequency。 Using the transfer matrix method of multibody system can solve the problem of vibration characteristics of rigid flexible coupling system。 Based on the transfer matrix method of multibody system, the dynamic model and the dynamic model of the self propelled gun system are established according to the structural characteristics of the self propelled gun weapon。 The transfer equation and transfer matrix of each component of the self propelled gun system are derived, and the total transfer equation and transfer matrix of the system are derived。 Using MATLAB computer software, the preparation of the self-propelled artillery system vibration simulation program and simulated to obtain the self artillery system frequency and vibration type and analysis of the ground connection stiffness on the impact of self vibration frequency of a gun, for self-propelled gun firing dynamics calculation and improve the firing precision strike laid the foundation。

Keywords Self-propelled artillery Vibration characteristics Eigen frequencies Multibody system matrix method

第 II 页 本科毕业设计说明书

目 次

1 绪论 1

1。1  课题背景及意义 1

1。2  国内外研究现状 2

1。3  本课题主要工作 2

2 自行火炮的介绍及动力学模型建模 4

2。1  自行火炮介绍 4

2。2  自行火炮系统动力学模型及拓扑图 5

3 多体系统传递矩阵法 8

3。1  状态矢量 8

3。2  典型元件的传递矩阵 8

3。3  空间弹簧和扭簧的传递矩阵 8