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一类非线性振动周期与周期解的解析逼近

周显波1,李鹏松2,吴柏生2   

  1. 1.空军长春飞行学院力学教研室,长春,130022; 2.吉林大学数学科学学院,长春,130012
  • 收稿日期:2002-03-18 修回日期:1900-01-01 出版日期:2002-10-26
  • 通讯作者: 吴柏生

Analytical Approximations to Period and Periodic Solution for a Class of Nonlinear Oscillators

ZHOU Xian-bo1,LI Peng-song2,WU Bai-sheng2   

  1. 1.Mechanics Section , Changchun Airforce College of Flying , Changchun 130022 , China2.College of Mathematics , Jilin University , Changchun 130012 , China
  • Received:2002-03-18 Revised:1900-01-01 Online:2002-10-26
  • Contact: WU Bai-sheng

摘要: 研究具有奇非线性单自由度保守系统的非线性振动.将控制方程的线性化与调和平衡法组合起来,建立周期及周期解的解析逼近公式.这些公式既适用于小振幅又适用于大振幅情况.举例说明提出方法的有效性.

关键词: 非线性振动, 周期, 周期解, 线性化, 调和平衡

Abstract: This paper deals with the nonlinear oscillations of conservative single-degree-of-freedom systems with odd nonlinearity. By combining the linearization of the governing equation with the method of harmonic balance , we have established analytical approximate formulas for the period and the periodic solution. These formulas are valid for oscillations with small as well as large amplitude. It is illustrated by one example that the proposed formulas can give very satisfactory approximate results.

Key words: nonlinear oscillation, period, periodic solution, linearization, harmonic balance

中图分类号: 

  • O322