Applied Mathematics and Mechanics (English Edition) ›› 2000, Vol. 21 ›› Issue (9): 1024-1033.

• 论文 • 上一篇    下一篇

IMPERFECT BIFURCATION OF SYSTEMS WITH SLOWLY VARYING PARAMETERS AND APPLICATION TO DUFFING’S EQUATION

化存才, 陆启韶   

  1. School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China
  • 收稿日期:1999-05-26 修回日期:2000-05-25 出版日期:2000-09-18 发布日期:2000-09-18
  • 基金资助:

    the National Natural Science Foundation of China(19872010);the Aviation Science Foundation(98B51125);the Doctoral Program Foundation of the Education Committee of China(98000619)

IMPERFECT BIFURCATION OF SYSTEMS WITH SLOWLY VARYING PARAMETERS AND APPLICATION TO DUFFING’S EQUATION

HUA Cun-cai, LU Qi-shao   

  1. School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China
  • Received:1999-05-26 Revised:2000-05-25 Online:2000-09-18 Published:2000-09-18
  • Supported by:

    the National Natural Science Foundation of China(19872010);the Aviation Science Foundation(98B51125);the Doctoral Program Foundation of the Education Committee of China(98000619)

摘要: A new method was proposed for essentially studying the imperfect bifurcation problem of nonlinear systems with a slowly varying parameter. By establishing some theorems on the solution approximated by that of the linearized system, the delayed bifurcation transition and jump phenomena of the time-dependent equation were analyzed. V-function was used to predict the bifurcation transition value. Applying the new method to analyze the Duffing’s equation, some new results about bifurcation as well as that about the sensitivity of the solutions with respect to initial values and parameters are obtained.

Abstract: A new method was proposed for essentially studying the imperfect bifurcation problem of nonlinear systems with a slowly varying parameter. By establishing some theorems on the solution approximated by that of the linearized system, the delayed bifurcation transition and jump phenomena of the time-dependent equation were analyzed. V-function was used to predict the bifurcation transition value. Applying the new method to analyze the Duffing’s equation, some new results about bifurcation as well as that about the sensitivity of the solutions with respect to initial values and parameters are obtained.

中图分类号: 

APS Journals | CSTAM Journals | AMS Journals | EMS Journals | ASME Journals