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Su Luanming, Ye Min. PARAMETRIC INDENTIFICATION FOR HIGH-DIMENSIONAL NONLINEAR VIBRATION SYSTEM[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(2): 425-436. DOI: 10.6052/0459-1879-2012-2-20120227
Citation: Su Luanming, Ye Min. PARAMETRIC INDENTIFICATION FOR HIGH-DIMENSIONAL NONLINEAR VIBRATION SYSTEM[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(2): 425-436. DOI: 10.6052/0459-1879-2012-2-20120227

PARAMETRIC INDENTIFICATION FOR HIGH-DIMENSIONAL NONLINEAR VIBRATION SYSTEM

  • The incremental harmonic balance nonlinear identification (IHBNID) is extended to high-dimensional nonlinear vibration system. The identification equation of multi-degree-of-freedom nonlinear dynamic system is derived. Numerical simulation on a two-degrees-of-freedom nonlinear system example, based on the IHBNID, was carried out on the period-1, the period-doubling and the chaotic motions. The effect of noise on the identification parameters is analyzed. The effectiveness of the IHBNID is verified for multi-degree-of-freedom nonlinear dynamic system. The simulating results show that the proposed method has high accuracy and efficiency, and can improve the antinoise ability.
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