Force oscillations distort avalanche shapes

Force oscillations distort avalanche shapes

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Contradictory scaling behavior in experiments testing the principle of universality may be due to external oscillations.Thus, the effect of damped oscillatory external forces on slip avalanches abc material in slowly deformed solids is simulated using a mean-field model.Akin to a resonance effect, oscillatory driving forces change the dynamics of avalanches with durations close to the oscillation period.This problem can be avoided by tuning mechanical resonance frequencies away from the range of the inverse avalanche durations.The results provide critical guidance for experimental tests for universality and a quantitative understanding of avalanche dynamics soiebiologique.com under a wide range of driving conditions.