WANG Deliang,LIU Jike,LIU Guang.Multiple solutions of the Mathieu-Duffing system obtained by the improved IHB method based on Tikhonov regularization[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(05):78-84.
WANG Deliang,LIU Jike,LIU Guang.Multiple solutions of the Mathieu-Duffing system obtained by the improved IHB method based on Tikhonov regularization[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2023,62(05):78-84. DOI: 10.13471/j.cnki.acta.snus.2023A001.
Multiple solutions of the Mathieu-Duffing system obtained by the improved IHB method based on Tikhonov regularization
The incremental harmonic balance method (IHB method) is a semi-numerical and semi-analytical method for strongly nonlinear dynamic systems. However, previous studies have shown that the convergence performance of the original IHB method in solving systems with multiple solutions strongly depends on the selection of initial values. The Tikhonov regularization is often used in optimization problems to solve potential ill-posed problems. In this paper, by incorporating the Tikhonov regularization into the original IHB method, an improved IHB method (TIHB method) is proposed to obtain the multiple solutions of the Mathieu-Duffing system. The results show that the improved TIHB method can obtain the stable and unstable solutions of the Mathieu-Duffing system quickly and efficiently, and the convergence performance of the TIHB method is much better than the original IHB method.
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