Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
277661 | International Journal of Solids and Structures | 2014 | 16 Pages |
Abstract
Constitutive equations are derived for the viscoplastic behavior of a host medium driven by diffusion of guest atoms. With reference to the trapping concept, two states of a guest atom are distinguished: mobile and immobilized (due to alloying with the host matrix). This allows propagation of a sharp interphase to be described between regions rich and poor in guest atoms. The model is applied to study the mechanical response of a spherical electrode particle in a Li-ion battery. Ability of the constitutive equations to capture basic phenomena observed in anode particles under lithiation is demonstrated by numerical simulation.
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Authors
A.D. Drozdov,