Applied Mathematics and Mechanics (English Edition) ›› 2024, Vol. 45 ›› Issue (5): 763-778.doi: https://doi.org/10.1007/s10483-024-3114-6

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  • 收稿日期:2024-01-10 出版日期:2024-05-03 发布日期:2024-04-26

Comparison of nonlinear modeling methods for the composite rubber clamp

Yiming CAO1, Hui MA1,2,*(), Xumin GUO1, Bingfeng ZHAO1, Hui LI1, Xin WANG3, Bing WANG4   

  1. 1School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
    2Key Laboratory of Vibration and Control of Aero-Propulsion Systems of Ministry of Education of China, Northeastern University, Shenyang 110819, China
    3AVIC Shenyang Engine Design Institute, Shenyang 110013, China
    4Dalian Mengyu Machinery Co., Ltd., Dalian 116317, Liaoning Province, China
  • Received:2024-01-10 Online:2024-05-03 Published:2024-04-26
  • Contact: Hui MA E-mail:mahui_2007@163.com

Abstract:

The cubic stiffness force model (CSFM) and Bouc-Wen model (BWM) are introduced and compared innovatively. The unknown coefficients of the nonlinear models are identified by the genetic algorithm combined with experiments. By fitting the identified nonlinear coefficients under different excitation amplitudes, the nonlinear vibration responses of the system are predicted. The results show that the accuracy of the BWM is higher than that of the CSFM, especially in the non-resonant region. However, the optimization time of the BWM is longer than that of the CSFM.

Key words: pipeline system, nonlinear clamp model, composite rubber clamp, amplitude-dependent characteristic, vibration response experiment

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