Title: Optimization of vibration absorbers for engine crankshafts

Authors: X. Zhengchang, R.J. Anderson

Addresses: Shanghai Automobile Works, Anting, Shanghai, People's Republic of China. ' Department of Mechanical Engineering, Queen's University, Kingston, Ontario, Canada

Abstract: This paper presents a complex idealized mathematical model and a new procedure for optimum design of a rubber crankshaft vibration absorber for automobile engines. The model is a multi-mass formulation, containing all gas torques of the individual cylinders and all types of damping of the individual engine parts. In particular, dry friction damping, a non-linear damping caused by auxiliaries, is brought into the model. In the description of the optimization procedure for lowest maximum torsional amplitude with a multi-DOF system, design considerations of non-bonded rubber absorbers, establishment of an objective function and contraints, and application of the |Complex Method| are covered.

Keywords: rubber absorbers; torsional vibration; dynamic vibration absorbers; automotive engines; optimum design; dynamic analysis; IC engines; vibrational modelling; digital simulation; vehicle design; mathematical modelling; crankshaft vibration; dry friction damping.

DOI: 10.1504/IJVD.1988.061499

International Journal of Vehicle Design, 1988 Vol.9 No.6, pp.654 - 665

Published online: 26 May 2014 *

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