Soumyajyoti Biswas, Purusattam Ray, Bikas K. Chakrabarti
A discretized version of the Burridge-Knopoff train model with (non-linear friction force replaced by) random pinning is studied in one and two dimensions. A scale free distribution of avalanches and the Omori law type behaviour for after-shocks are obtained. The avalanche dynamics of this model becomes precisely similar (identical exponent values) to the Edwards-Wilkinson (EW) model of interface propagation. It also allows the complimentary observation of depinning velocity growth with exponent value identical with that for EW model in this train model and Omori law behaviour of after-shock (depinning) avalanches in the EW model.
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http://arxiv.org/abs/1305.3790
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