Applied Mathematics and Mechanics (English Edition) ›› 2012, Vol. 33 ›› Issue (9): 1137-1152.doi: https://doi.org/10.1007/s10483-012-1611-6

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Generalized hyperbolic perturbation method for homoclinic solutions of strongly nonlinear autonomous systems

Yang-yang CHEN1, Le-wei YAN2, Kam-yim SZE3, Shu-hui CHEN 4   

  1. 1. Key Laboratory of Vibration Control and Structural Safety of Ministry of Education of China, Guangzhou University, Guangzhou 510405, P. R. China;
    2. Department of Engineering Mechanics, Guangzhou University, Guangzhou 510405, P. R. China;
    3. Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong, P. R. China;
    4. Department of Applied Mechanics and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
  • Received:2012-05-08 Revised:2012-05-16 Online:2012-09-10 Published:2012-09-10
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 10972240 and 11102045), the Natural Science Foundation of Guangdong Province of China (No. S20110400040), the Foundation of Guangdong Education Department of China (No. LYM10108), the Foundation of Guangzhou Education Bureau of China (No. 10A024), and the Research Grant Council of Hong Kong of China (No.GRF-HKU-7173-09E)

Abstract:

A generalized hyperbolic perturbation method is presented for homoclinic solutions of strongly nonlinear autonomous oscillators, in which the perturbation proce-dure is improved for those systems whose exact homoclinic generating solutions cannot be explicitly derived. The generalized hyperbolic functions are employed as the basis functions in the present procedure to extend the validity of the hyperbolic perturbation method. Several strongly nonlinear oscillators with quadratic, cubic, and quartic nonlin-earity are studied in detail to illustrate the efficiency and accuracy of the present method.

Key words: gas atomization, spray forming, instability of interfacial wave

2010 MSC Number: 

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