Dynamics Analysis of Mechanical Components: a Discrete Model For Damping
F. Cosmi

doi:10.3970/cmes.2008.027.187
Source CMES: Computer Modeling in Engineering & Sciences, Vol. 27, No. 3, pp. 187-, 2008
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Keywords Numerical methods, Cell Method, elasto-dynamics, damping
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. \newline 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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