The effect of deposition pattern on thermal stress and deformation in laser solid forming

Xin Lin, Bo Wang, Jun Yu, Liang Ma, Jing Chen, Weidong Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

A 3-D indirect-coupled finite-element model was developed for describing the transient thermal/stress field during Laser Solid Forming (LSF) process. The effect of the deposition patterns, raster, outside-in spiral and Hilbert fractal patterns, on the thermal field, thermal stresses and substrate deformation during LSF process was examined. It is found that the transient temperature gradient and the maximum equivalent stress in the LSFing part decreased gradually in LSF process. The transient temperature gradient and the maximum equivalent stress were small using Hilbert fractal deposition pattern on comparison with those using the other patterns. The larger residual stress and the smallest substrate deformation is obtained using the raster deposition pattern, and the smaller residual stress and the largest substrate deformation is produced using Hilbert fractal deposition pattern.

Original languageEnglish
Title of host publication29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010 - Congress Proceedings
PublisherLaser Institute of America
Pages461-468
Number of pages8
ISBN (Print)9780912035611
DOIs
StatePublished - 2010

Publication series

Name29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010 - Congress Proceedings
Volume103

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