Transient response of a hygrothermoelastic cylinder with internal heat and moisture sources using non-Fourier hyperbolic coupled model

A hyperbolic coupled moisture–heat model is developed by extending the classical Fourier law of heat conduction and Fick’s law of diffusion to investigate the transient hygrothermoelastic behavior in a homogeneous graphite-epoxy resin composite T300/5208 isotropic cylinder with both internal heat and moisture sources. The model addresses the situation where the interior of the cylindrical system is subjected to moisture–heat loading, while its outer surface is insulated and moisture-proof. We employ the Laplace transform and finite Hankel transform techniques to derive the exact solution. The analysis explores the coupling and decoupling effects of temperature, moisture, and stress. The obtained results are useful to engineering applications involving internal heat and moisture sources within cylindrical structures.