计算物理 ›› 2019, Vol. 36 ›› Issue (2): 245-252.DOI: 10.19596/j.cnki.1001-246x.7844

• • 上一篇    

非均匀圆柱壳中传播孤立波的动力学稳定性

那仁满都拉, 赤里木格   

  1. 内蒙古民族大学物理与电子信息学院, 内蒙古 通辽 028043
  • 收稿日期:2018-02-08 修回日期:2018-04-23 出版日期:2019-03-25 发布日期:2019-03-25
  • 作者简介:那仁满都拉(1963-),男,教授,博士,硕士生导师,主要从事非线性物理与数值计算等研究,E-mail:nrmdltl@126.com
  • 基金资助:
    国家自然科学基金(11462019)资助项目

Dynamical Stability of Solitary Wave Propagation in Inhomogeneous Cylindrical Shells

Naranmandula, Chilimuge   

  1. College of Physics and Electronics, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028043, China
  • Received:2018-02-08 Revised:2018-04-23 Online:2019-03-25 Published:2019-03-25

摘要: 利用积分因子法对非均匀圆柱壳中传播孤立波的动力学稳定性进行详细的数值研究.以高斯波扰动、简谐波扰动和随机扰动作为初始扰动,考察受到这三种不同扰动的孤立波能否较长时间保持波形结构和传播速度而稳定传播的问题.结果表明:孤立波的稳定传播与扰动幅度、宽度和波长有关,只在受到幅度、宽度和波长都足够小的扰动下非均匀圆柱壳中传播的孤立波才能够表现出较强的抗干扰性,具有良好的动力学稳定性.

关键词: 非均匀圆柱壳, 孤立波, 稳定性, 积分因子法

Abstract: Dynamical stability of solitary wave propagation in inhomogeneous cylindrical shell was numerically studied in detail by using method of integrating factors. Stable propagation keeping structure of waveform and propagation speed of solitary wave for long time was examined, under three kinds of initial perturbations that is Gaussian wave perturbation, harmonic wave perturbation and stochastic perturbation. It shows that stable propagation of solitary wave is related to amplitude, width and wavelength of perturbations. Only with small enough amplitude, width and wavelength, solitary wave shows relatively strong anti-interference property, and has better dynamical stability.

Key words: inhomogeneous cylindrical shell, solitary wave, stability, method of integrating factors

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