期刊
OPTICS AND LASER TECHNOLOGY
卷 41, 期 3, 页码 224-232出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2008.07.006
关键词
Laser cutting; Finite element analysis; Sheet metal
资金
- King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia [SB070014]
Laser cutting of tailored blanks from a thick mild steel sheet is considered. Temperature and stress field in the cutting sections are modeled using the finite element method. The residual stress developed in the cutting section is determined using the X-ray diffraction (XRD) technique and is compared with the predictions. The structural and morphological changes in the cut section are examined using the optical microscopy and scanning electron microscopy (SEM). It is found that temperature and von Mises stress increase sharply in the cutting section, particularly in the direction normal to the cutting direction. The residual stress remains high in the region close to the cutting section. (c) 2008 Elsevier Ltd. All rights reserved.
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