A Thermo-Chemo-Mechanically Coupled Peridynamic Model for Investigating the Crack Behaviors of Deformable Solids with Heat Conduction, Species Diffusion, and Chemical Reactions

A thermo-chemo-mechanically (TCM) coupled peridynamic (PD) model is proposed to analyze the crack behavior in solids considering heat conduction, species diffusion, and chemical reactions. PD theoretical framework established based on non-equilibrium thermodynamics. The influences of diffusion reactions Helmholtz free energy density subsequent formation propagation cracks are distinguished by introducing concentration diffusive extent reaction. Furthermore, inter-physics coupling coefficients calibrated equating corresponding field continuum mechanics under same condition. cases vacancy redistribution ceramic embrittlement metals carried out demonstrate potential forecasting behaviors multi-physics with limited deformation constant density.