This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Simulation Method for Crankshaft Torsional Vibration by Considering Dynamic Characteristics of Rubber Dampers
Annotation ability available
Sector:
Language:
English
Abstract
This paper refers to a numerical calculation method, in which the transition matrix method is employed. The method estimates torsional vibration amplitude of a crankshaft with a rubber damper by taking the dynamic characteristics of the rubber part into consideration.
Firstly, the rubber part is replaced with a three-elemental Maxwell model, which is determined by the results of static tests, such as stress relaxation test, creep test and static torsional test. The basic data used for the determination of the element values on the Maxwell model are obtained by these tests.
Secondly, the vibration system of a crankshaft with a rubber damper is replaced with a linear lumped model, in which the torsional stiffness and damping coefficient of the damper rubber part are decided by using the element values of the Maxwell model.
Lastly, the calculated results by the transition matrix method in the vibration model are compared with the experimental results and it is shown that the torsional vibration amplitude can approximately analysed by this method.
Authors
Citation
Honda, Y., Saito, T., Wakabayashi, K., Kodama, T. et al., "A Simulation Method for Crankshaft Torsional Vibration by Considering Dynamic Characteristics of Rubber Dampers," SAE Technical Paper 891172, 1989, https://doi.org/10.4271/891172.Also In
References
- Iwamoto S. “Study on the effective viscosity of working oil in viscous torsional vibration damper of diesel engine (2nd report)” J. of the M.E.S.J. 18 10 1983
- Iwamoto S. “Calculative method for design of viscous torsional vibration dampers of reciprocating engines” J. of the D.S.S.J. 18 104 1983
- Federn K. “Generalized criteria for the evaluation of torsional vibration dampers” I. Mech E. C302 84 1984
- Honda Y. Saito T. “Study on shear-type rubber dampers of various forms for controlling torsional vibration” Transaction of JSAE 30 1985
- Wakabayashi K. Niikura T. Yamamoto A. “A simulation method for the torsional vibration waveform of a crankshaft with a rubber damper” I. Mech E. C119 79 1979
- Craggs A. “Transient vibration analysis of linear systems using transition matrices” NASA CR-1237
- “Simulation of torsional vibrations in crankshaftings of diesel engines” Bulletin of the M.E.S.J 5 2 1977
- Wakabayashi K. Yamada M. Uno T. “Torsional Vibration analysis of internal combustion engine crankshaftings using transition matrices” Transaction of Kokushikan Univ. 10 1977