学术论文

      含区间参数的柔性弹箭特征值分析

      Research on Eigenvalues with Interval Parameters of Flexible Missile

      摘要:
      系统结构参数的随机性会引起系统振动特性的变化;基于区间参数和多体系统传递矩阵法,分析了火箭弹特征值问题,并对含区间参数的柔性火箭弹振动特性进行了数值仿真,进而比较了弹长、弹重和转动惯量的波动对振动特性的影响以及推力和质量流失对横向位移的影响;该方法涉及的矩阵阶次低,计算速度快,无需建立系统总体动力学方程,为研究复杂变截面弹箭和飞行中的复杂问题提供了重要参考.
      Abstract:
      On the basis of interval parameter and multi-body system transfer matrix method,this paper not only analyzes the problem of eigenvalue of rocket,but also carries out the numerical simulation of the flexible rocket vibration characteristics with interval parameters.And then the influence of the fluctuation of the bomb length,the bomb weight and the moment of inertia on the vibration characteristics and the influence of the thrust and mass loss on the lateral displacement are compared.Involving a low order of the matrix and computing fast,this way has no need to establish the overall system dynamics equation and provides an important reference for the study of complex variable cross-section projectile and flying complex problems.
      Author: SHU Ruihong WANG Guoping WU Lingwei
      作者单位: 南京理工大学 能源与动力工程学院,南京,210094
      刊 名: 兵器装备工程学报 ISTIC
      年,卷(期): 2017, 38(9)
      分类号: TJ513
      在线出版日期: 2018年1月3日