Nonlinear Dynamical Model with Fault Parameters for Railway Vehicles

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (6) : 122-125.

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Nonlinear Dynamical Model with Fault Parameters for Railway Vehicles

Zhao Na¹, Cao Deng-qing^1,2

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Abstract

As the object of high-speed and heavy-load putting into effect, the nonlinear dynamic problem of freight trains’ bogie become serious. Various factors which can be the causes of faults are analyzed in order to construct the 39-degrees-of-freedom nonlinear dynamic model of vehicle with fault parameters, and the wearing fault of second suspending is described in detail. After a large number of numerical calculations, the result is used to investigate the relations between the dynamic behavior and the corresponding fault parameters. A novel approach of vehicle fault diagnosis might be set up in this way.

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Three-piece bogie / Nonlinear dynamics / Fault parameter / Hunting stability

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Zhao Na; Cao Deng-qing;. Nonlinear Dynamical Model with Fault Parameters for Railway Vehicles [J]. Journal of Vibration and Shock, 2009, 28(6): 122-125