Numerical simulation on the transient thermal response of steel irradiated by a repetitively pulsed laser

A two-dimensional finite element model was used to evaluate the transient surface/inner temperature distribution induced by a Gaussian-laser-beam absorbed in 30CrMnSiA steel. The results from the numerical simulation show that under the action of a repetitively pulsed laser, the temperature on the sample surface rises in an oscillatory way, which is different from the experimental results measured with a temperature measurement system of longer response time, whereas as the calculated temperature is averaged, its average results are in agreement with the experimental ones.