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A multi-physics multi-scale approach in engine design analysis

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journal contribution
posted on 20.05.2009 by M.S. Malika Perera, Stephanos Theodossiades, Homer Rahnejat
Vibration behaviour of an internal combustion engine depends on rigid body inertial dynamics, structural modal characteristics of its elastic members, tribological behaviour of loadbearing contacts, and piston-cylinder interactions. Therefore, it is essential to use a multi-physics approach that addresses all these physical properties in a single integrative model as presented in this paper. This approach can be regarded as holistic and a good aid for detailed design. Particular attention is paid to the critical elements in the system, such as load-bearing conjunctions (crankshaft main bearings) and piston-cylinder wall interactions. Another important feature is the integrated analysis across the physics of motion from microscale fluid film formation to submillimetre structural deformations and onto large displacements of inertial members. In order to succeed in predictions within sensible industrial time scales, analytical methods have been used as far as possible rather than numerical approaches. Model predictions show good agreement with fired engine test data.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

PERERA, M.S.M., THEODOSSIADES, S. and RAHNEJAT, H., 2007. A multi-physics multi-scale approach in engine design analysis. Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 221(3), pp. 335-348.

Publisher

Professional Engineering Publishing / © IMECHE

Version

VoR (Version of Record)

Publication date

2007

Notes

This is an article from the journal, Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics [© IMechE ]. It is also available at: http://dx.doi.org/10.1243/14644193JMBD78

ISSN

1464-4193

Language

en

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