The influence of thermal loading due to laser pulse on generalized micropolar thermoelastic solid with comparison of different theories

Abstract

Purpose

The purpose of this paper is to introduce the coupled theory, Lord-Shulman theory with one relaxation time and Green-Lindsay theory with two relaxation times to study the influence of rotation on generalized micropolar thermoelasticity subject to thermal loading due to laser pulse. The bounding plane surface is heated by a non-Gaussian laser beam with pulse duration of 8 ps.

Design/methodology/approach

The problem has been solved numerically by using the normal mode analysis.

Findings

The thermal shock problem is studied to obtain the exact expressions for the displacement components, force stresses, temperature, couple stresses and micro-rotation. The distributions of the considered variables are illustrated graphically. Comparisons are made with the results predicted by three theories in the presence and absence of laser pulse and for different values of time.

Originality/value

Generalized micropolar thermoelastic solid.

Citation

I.A. Othman, M., Hasona, W.M. and M. Abd-Elaziz, E. (2014), "The influence of thermal loading due to laser pulse on generalized micropolar thermoelastic solid with comparison of different theories", Multidiscipline Modeling in Materials and Structures, Vol. 10 No. 3, pp. 328-345. https://doi.org/10.1108/MMMS-07-2013-0047