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Dynamics Analysis of Mechanical Components: a Discrete Model For Damping

F. Cosmi1

Department of Mechanical Engineering, University of Trieste, Trieste, Italy, cosmi@units.it

Computer Modeling in Engineering & Sciences 2008, 27(3), 187-196. https://doi.org/10.3970/cmes.2008.027.187

Abstract

The Cell Method is a recent numerical method that can be applied in several fields of physics and engineering. In this paper, the elastodynamics formulation is extended to include system internal damping, highlighting some interesting characteristics of the method. The developed formulation leads to an explicit solving system. The mass matrix is diagonal (without lumping) and in the most general case a time-dependent damping coefficient can be defined for each node. \newline Accuracy and convergence rate have been tested with reference to the classical problem of a particle free vibration with viscous damping.
An application to mechanical components analysis has been included in order to illustrate the potentialities of the method for fatigue behaviour assessment of mechanical parts.

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Cite This Article

Cosmi, F. (2008). Dynamics Analysis of Mechanical Components: a Discrete Model For Damping. CMES-Computer Modeling in Engineering & Sciences, 27(3), 187–196. https://doi.org/10.3970/cmes.2008.027.187



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