A Model for the Diffusion of Moisture in Adhesive Joints. Part III: Numerical Simulations
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The coupling mechanisms between the diffusion process and the viscoelastic response of an adhesive are explained. A numerical scheme for fully-coupled solutions is proposed and implemented in a two-dimensional finite element code. A number of numerical simulations are presented in order to illustrate the importance of the following features: (1) the bulk viscoelastic behavior, (2) penetrant size, (3) physical aging, (4) the strain dependence of the diffusion coefficient, (5) the concentration dependence of the diffusion coefficient and (6) differential swelling. The effect of moisture intrusion on the stress (strain) distribution across a butt joint is also presented. Copyright 1989, Taylor & Francis Group, LLC. All rights reserved.