Modeling of the Chemo-mechanical Behaviors of Reactive Materials

Abstract eng:
Sammar_y To describe the transient behaviors of chemo-mechanical interactions in reactive materials, this paper formulate a continuum- mechanical model of the coupled mass transport, deformation and chemical reaction within the framework of nonequilibrium thermodynamics. By introducing a volumetric strain relation enforced as a constraint to the free energy function via a Lagrange multiplier, we consider separately the reaction dilation and the swelling due to imbibition of external molecules. The model is illustrated by two examples and the kinetic characters of these processes are analyzed under various ratios of characteristic time of diffilsion and reaction.

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