Development of Estimation for Strain in Damages of Motorcycle Engine Parts When Tipped Over from Stationary State

Paper #:
  • 2013-32-9096

Published:
  • 2013-10-15
Citation:
Nakamura, S., Ogura, H., Noguchi, K., and Miyazaki, Y., "Development of Estimation for Strain in Damages of Motorcycle Engine Parts When Tipped Over from Stationary State," SAE Int. J. Passeng. Cars - Mech. Syst. 6(3):1586-1594, 2013, https://doi.org/10.4271/2013-32-9096.
Pages:
9
Abstract:
In this research, a simulation method was developed in which it was able to estimate, in the early stage of design, the strains that potentially lead to damages to motorcycle engine parts when tipped over from a stationary state.Splitting a series of phenomena from the start of tilting of motorcycle from the upright position up to the end of collision of engine parts after the contact on the ground to two groups by before and after the contact of engine parts on the ground, we applied the multi body dynamics analysis to the first group, and the elastro-plastic FEM analysis to the latter one. In the computer simulation of collision using the elastro-plastic FEM analysis, we minimized the FEM models from the entire motorcycle models and treated others as a solid model to shorten the computation period. It is also realized that the strains occurring in the engine parts can be simulated by considering only the mass of the parts which are rigidly mounted on the engine.The developed simulation method allows remarkable reduction of analysis time while assuring a high accuracy, contributing the estimation of damages to engine parts in the early stage of design.
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