Models of plastic depinning of driven disordered systems

Pramana

M Cristina Marchetti1¹ 

[1] Physics Department, Syracuse University, Syracuse, NY 13244, USA$$

关键词: Collective transport;    depinning;    disorder;    plasticity.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Two classes of models of driven disordered systems that exhibit history-dependent dynamics are discussed. The first class incorporates local inertia in the dynamics via nonmonotonic stress transfer between adjacent degrees of freedom. The second class allows for proliferation of topological defects due to the interplay of strong disorder and drive. In mean field theory both models exhibit a tricritical point as a function of disorder strength. At weak disorder depinning is continuous and the sliding state is unique. At strong disorder depinning is discontinuous and hysteretic.

【 授权许可】

Unknown