Applied Mathematics and Mechanics (English Edition) ›› 2023, Vol. 44 ›› Issue (11): 1887-1910.doi: https://doi.org/10.1007/s10483-023-3047-6

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A novel adaptive harmonic balance method with an asymptotic harmonic selection

Rongzhou LIN1, Lei HOU1, Yi CHEN1, Yuhong JIN1, N. A. SAEED2,3,4, Yushu CHEN1   

  1. 1. School of Astronautics, Harbin Institute of Technology, Harbin 150001, China;
    2. Department of Physics and Engineering Mathematics, Faculty of Electronic Engineering, Menoufia University, Menouf 32952, Egypt;
    3. Department of Automation, Biomechanics, and Mechatronics, Faculty of Mechanical Engineering, Lodz University of Technology, Lodz 90924, Poland;
    4. Mathematics Department, Faculty of Science, Galala University, Galala 43511, Egypt
  • Received:2023-06-02 Revised:2023-09-10 Published:2023-10-26
  • Contact: Lei HOU, E-mail: houlei@hit.edu.cn
  • Supported by:
    the National Natural Science Foundation of China (Nos. 11972129 and 12372008), the National Major Science and Technology Projects of China (No. 2017-IV-0008-0045), the Natural Science Foundation of Heilongjiang Province of China (No. YQ2022A008), the Fundamental Research Funds for the Central Universities of China (No. HIT.OCEF.2023006), the Polish National Science Centre of Poland under the OPUS 18 grant (No. 2019/35/B/ST8/00980), and the Tianjin University Independent Innovation Foundation of China (No. 2023XJS-0038)

Abstract: The harmonic balance method (HBM) is one of the most widely used methods in solving nonlinear vibration problems, and its accuracy and computational efficiency largely depend on the number of the harmonics selected. The adaptive harmonic balance (AHB) method is an improved HBM method. This paper presents a modified AHB method with the asymptotic harmonic selection (AHS) procedure. This new harmonic selection procedure selects harmonics from the frequency spectra of nonlinear terms instead of estimating the contribution of each harmonic to the whole nonlinear response, by which the additional calculation is avoided. A modified continuation method is proposed to deal with the variable size of nonlinear algebraic equations at different values of path parameters, and then all solution branches of the amplitude-frequency response are obtained. Numerical experiments are carried out to verify the performance of the AHB-AHS method. Five typical nonlinear dynamic equations with different types of nonlinearities and excitations are chosen as the illustrative examples. Compared with the classical HBM and Runge-Kutta methods, the proposed AHB-AHS method is of higher accuracy and better convergence. The AHB-AHS method proposed in this paper has the potential to investigate the nonlinear vibrations of complex high-dimensional nonlinear systems.

Key words: harmonic balance method (HBM), adaptive harmonic balance (AHB) method, harmonic selection, nonlinear vibration, multi-frequency excitation

2010 MSC Number: 

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