Application of a Stochastic Version of the Restoring Force Surface Method to Identify a Duffing Oscillator
Abstract
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.
How to cite this document
Villani, Luis G.G.; Da Silva, Samuel; Cunha, Americo. Application of a Stochastic Version of the Restoring Force Surface Method to Identify a Duffing Oscillator. Nonlinear Dynamics of Structures, Systems and Devices - Proceedings of the 1st International Nonlinear Dynamics Conference, NODYCON 2019, p. 299-307. Available at: <http://hdl.handle.net/11449/223556>.
Language
English
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