New nonlocal poro-thermoelasticity model and impact response of laser heated temperature-dependent metallic sandwich-like porous laminated composites

Abstract

This paper aims to establish the nonlocal poro-thermoelasticity model based on Guyer and Krumhansl heat conduction law, of which the new constitutive and governing equations are strictly derived with the aid of the extended irreversible thermodynamics. For numerical example, the newly proposed model is applied to analysis and study the transient responses of temperature-dependent metallic sandwich-like porous laminated composites subjected to non-Gaussian laser ablation with plasma plume absorption mechanisms via the semi-analytical technique based on Kirchhoff transformation and Laplace transformation. The dimensionless results revealing that: (i) the consideration of the nonlocal effect predicted the less thermal stress and deformation; (ii) the laser/absorption parameters of the plasma plume can significantly influence the structural responses by changing the actual energy density absorbed by the surface; (iii) the shielding effect about the absorption mechanisms of plasma plume is: inverse bremsstrahlung (IB) > photo-ionization (PI).