Computational coupling of moisture diffusion and mechanical deformation in polymer matrix composites

摘要: A computationally efficient multiscale–multiphysics model aimed at predicting mechanical response of thermoplastic composites subjected to different levels moisture was developed. The mathematical the coupled moisture-diffusion–mechanical-deformation phenomenon stated microscale, based on observed experimental data, and then upscaled using a homogenization approach. two-way coupling between diffusion deformation introduced by which diffusivity enhanced hydrostatic strain, whereas strength stiffness were assumed degrade because ingression, also gives rise swelling. computational complexity analyzing two physical processes multiple scales reduced via reduction scheme for processes. validated 30% weight filled glass fiber carbon reinforced composites. conditioning uniaxial tension experiments utilized identify properties fine scale. identified used validate formulation in three-point bending test. Copyright © 2014 John Wiley & Sons, Ltd.