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A new approach on vibration analysis of locally nonlinear stiffness and damping system
Authors:Wang Yong  Huang Qibai  Zhou Minggang  Zhang Yongbo
Affiliation:(1) School of Mechanical Science & Engineering, Huazhong University of Science & Technology, Wuhan, Hubei, 430074, P.R. China
Abstract:The nonlinear force induced by spring and damping of 2-degree-of-freedom locally nonlinear vibrating system is regarded as applied force, and its mathematical model is established in this paper. Then impulse response temporal method of linear vibrating system is applied in the system, the response of locally nonlinear vibrating system is obtained by convolution integration between unit impulse response of corresponding linear system and equivalent nonlinear force, and numerical simulation of the model is attained. Finally, the feasibility of the new method on the domain of locally nonlinear vibrating system is verified by comparing the results, which supplies a new method to solve approximately vibration response of locally nonlinear vibrating systems.
Keywords:Locally nonlinear vibrating system  Impulse response temporal method  Vibration response  Nonlinear stiffness and Damping
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