A new method for estimating amplitudes of torsional vibration for engine crankshafts
by X. Zhengchang, R.J. Anderson
International Journal of Vehicle Design (IJVD), Vol. 9, No. 2, 1988

Abstract: This paper presents a complex idealised mathematical model and a new method for determining the forced torsional vibration amplitudes of crankshafts in IC engines. The model is a multi-mass formulation, containing all gas torques from the cylinders and all types of damping of the individual engine parts. In particular, dry friction damping, a non-linear effect caused by auxiliaries, is brought into the model. A new method for calculating the dynamic response of a non-linear system of this type is described. For the purpose of efficiency of calculation, an effective numerical procedure for solving a non-linear torsional vibration system is developed.

Online publication date: Mon, 26-May-2014

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