Abstract
A closed-form solution for temperature and stress fields is presented for short-pulse laser heating of the metal surface. Thermo-mechanical coupling between the heat and stress equations is incorporated in the analysis. The lattice site heat equation based on the non-equilibrium energy transport is used to account for the thermal field due to short-pulse heating. The Lie symmetry method is adopted to obtain the solution for the heat equation with the appropriate boundary conditions. In the analysis, stress wave dissipation is omitted in space due to mathematical simplifications. It is found that thermal displacement is negative in the early heating period and it becomes positive as the heating period progresses, which is attributed to thermo-mechanical coupling.
| Original language | English |
|---|---|
| Article number | 819263 |
| Pages (from-to) | 1308-1321 |
| Number of pages | 14 |
| Journal | Journal of Thermal Stresses |
| Volume | 36 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2 Dec 2013 |
Bibliographical note
Funding Information:Received 20 November 2012; accepted 20 December 2012. The authors acknowledge the support of King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia for this work. Address correspondence to R. S. Yilbas, Mechanical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia. E-mail: [email protected]
Keywords
- Laser
- Non-equilibrium heating
- Short-pulse
- Thermo-mechanical coupling
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics