首页|A Dynamical Approach to the Spatio-temporal Features of the Portevin-Le Chatelier Effect
A Dynamical Approach to the Spatio-temporal Features of the Portevin-Le Chatelier Effect
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We show that the extended Ananthakrishna's model exhibits all the features of the Portevin - Le Chatelier effect including the three types of bands. The model reproduces the recently observed crossover from a low dimensional chaotic state at low and medium strain rates to a high dimensional power law state of stress drops at high strain rates. The dynamics of crossover is elucidated through a study of the Lyapunov spectrum.