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Nonlinear Damping Identification in Nonlinear Dynamic System Based on Stochastic Inverse Approach

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  • S. L. Han
  • Takeshi Kinoshita

Abstract

The nonlinear model is crucial to prepare, supervise, and analyze mechanical system. In this paper, a new nonparametric and output-only identification procedure for nonlinear damping is studied. By introducing the concept of the stochastic state space, we formulate a stochastic inverse problem for a nonlinear damping. The solution of the stochastic inverse problem is designed as probabilistic expression via the hierarchical Bayesian formulation by considering various uncertainties such as the information insufficiency in parameter of interests or errors in measurement. The probability space is estimated using Markov chain Monte Carlo (MCMC). The applicability of the proposed method is demonstrated through numerical experiment and particular application to a realistic problem related to ship roll motion.

Suggested Citation

  • S. L. Han & Takeshi Kinoshita, 2012. "Nonlinear Damping Identification in Nonlinear Dynamic System Based on Stochastic Inverse Approach," Mathematical Problems in Engineering, Hindawi, vol. 2012, pages 1-20, April.
    • Handle: RePEc:hin:jnlmpe:574291
    DOI: 10.1155/2012/574291
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