基于多体系统传递矩阵法的直升机武器系统动力学建模与仿真
关键词 直升机 多体系统传递矩阵法 振动 动力响应
毕业论文设计说明书外文摘要
Title The Modeling and Simulition of Helicopter Weapon System Based on Transfer Matrix Method for Multibody System
Abstract
The helicopter has been widely used in many military fields for its flexible characteristics. But its development and use have been limited for vibration problem of helicopter. Helicopter weapon system can be seen as complex multibody system that consists of a number of rigid body and flexible body, its vibration and noise level depends on the law of dynamics of helicopter multibody system. Dynamics of multibody systems can provide key technology and means to reveal the reason of helicopter weapon system’s vibration noise and reduce rotor’s vibration noise. The transfer matrix method for multibody system is used to establish the dynamics model of helicopter weapon system, method deduced overall transfer equation automomatically, eigenequation. It is realized to compute vibration characteristics of the helicopter with high speed and the system’s natural frequecy is obtained. The dynamics response simulation of helicopter weapon system is completed, and several means of vibration control are put forward according to the simulation results.
Keywords helicopter transfer matrix method for multibody system vibration dynamic response
目 次
1 绪论 1
1.1 研究背景和选题意义 1
1.2 多体系统传递矩阵法 1
1.3 符号说明 5
1.4 本文研究内容 6
2 直升机武器系统动力学模型 8
2.1 直升机武器系统动力学模型 8
2.2 直升机武器系统动力学模型拓扑图 9
2.3 小结 11
3 线性直升机武器系统总传递方程 12
3.1 线性直升机武器系统元件的状态矢量、传递方程、传递矩阵 12
3.2 直升机武器系统总传递方程自动推导方法 16
3.3 小结 17
4 直升机武器系统振动特性 18
4.1 直升机武器系统特征方程 18
4.2 直升机武器系统振动特性计算 19
4.3 小结 21
5 非线性直升机武器系统动力学 22
5.1 基本概念 22
5.2 直升机武器系统元件的状态矢量、传递方程、传递矩阵 24
5.3 空间弹性阻尼铰受力分析 28
5.4 小结 30