A 3-D numerical model for ablation phenomena and thermal stress evolution during laser machining

R. Akarapu, B. Q. Li, A. E. Segall

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

A full 3-D transient model is developed for the ablation phenomena and thermal stress evolution during laser cutting and/or drilling of ceramic plates. The computational methodology is based on the Galerkin finite element method along with the use of a fixed grid algorithm to treat the thermal ablation resulting from an applied laser source. The present model is able to model any complex ablation operations involving discontinuity in geometries, as encountered in laser cutting and laser drilling operations. This is an advantage over the front tracking method by which the ablation moving interface is precisely tracked in time and which is useful for simple geometries. The laser ablation model is coupled with a thermal stress model to predict the evolution of thermal stresses, which arise due to a rapid change in thermal gradient near the laser beams. Model predictions compare well with the available data in literature for a simple configuration. Results obtained from model for both dual pulsed laser cutting and single laser drilling are discussed.

Original languageEnglish (US)
Title of host publicationProceedings of the 2003 ASME Summer Heat Transfer Conference, Volume 3
Pages189-198
Number of pages10
StatePublished - Dec 1 2003
Event2003 ASME Summer Heat Transfer Conference (HT2003) - Las Vegas, NV, United States
Duration: Jul 21 2003Jul 23 2003

Publication series

NameProceedings of the ASME Summer Heat Transfer Conference
Volume2003

Other

Other2003 ASME Summer Heat Transfer Conference (HT2003)
CountryUnited States
CityLas Vegas, NV
Period7/21/037/23/03

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Akarapu, R., Li, B. Q., & Segall, A. E. (2003). A 3-D numerical model for ablation phenomena and thermal stress evolution during laser machining. In Proceedings of the 2003 ASME Summer Heat Transfer Conference, Volume 3 (pp. 189-198). (Proceedings of the ASME Summer Heat Transfer Conference; Vol. 2003).