Application of a Stochastic Version of the Restoring Force Surface Method to Identify a Duffing Oscillator
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Data
2020-01-01
Autores
Villani, Luis G.G. [UNESP]
Da Silva, Samuel [UNESP]
Cunha, Americo
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Resumo
A stochastic version of the restoring force surface method is proposed and used to identify the parameters of a clamped-free beam with nonlinear effects induced by the presence of a magnet near to the free extremity. This system recalls a Duffing oscillator, which is used as a single-degree-of-freedom mathematical model to represent the mechanical system. Experimental and theoretical responses are compared taking into account a probabilistic band of confidence. The results show that the stochastic model identified can predict the beam's vibration responses, which ensure the robustness of the stochastic identification method.
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Duffing oscillator, Nonlinear dynamics, Restoring force surface, Stochastic model
Como citar
Nonlinear Dynamics of Structures, Systems and Devices - Proceedings of the 1st International Nonlinear Dynamics Conference, NODYCON 2019, p. 299-307.