Finite element analysis of coupled constituent diffusion in thermoelastic solids (Q1819586)

A finite element theory, suitable for describing the transient mass diffusion of a mobile constituent in a deformable thermoelastic solid, is presented. The theory considers the effects of coupling between concentration, temperature, and strain on a diffusing constituent in a parent solid. Numerical results are compared with closed-form analytical solutions of one-dimensional coupled diffusion problems. Numerical results are also compared with experimental data on internal hydrogen diffusion in beta-phase titanium alloys subjected to bending stress.