Laser forming is a new technology in sheet metal forming process, which has different applications for the industries that have previously used large tools for this purpose. Important parameters for achieving the desirable shape in laser forming process are scan speed, laser power, and scan pattern type. In this paper, finite element method simulation was done to study effect of different scan path to obtain shape of cap from a circular plate. Then, results of different scan paths were compared with each other at same condition. Comparing radius, curvatures, and edge distortion for different scan paths showed that spiral paths produced better caps than circular ones owing to their continuity. The experiments were performed using parameters of full Fermat's scan path that obtained appropriate from simulations. Comparison between simulation and experimental results has shown good agreement.
References
1.
H.
Shen
and F.
Vollertsen
, “Modelling of laser forming—A review
,” Comput. Mater. Sci.
46
, 834
–840
(2009
).2.
S. P.
Edwardson
, J.
Griffiths
, G.
Dearden
, and K. G.
Watkins
, “Temperature gradient mechanism: Overview of the multiple pass controlling factors
,” J. Phys. Procedia
5
, 53
–63
(2010
).3.
M. H.
Gollo
, S. M.
Mahdavian
, and H. M.
Naeini
, “Statistical analysis of parameter effects on bending angle in laser forming process by pulsed Nd:YAG laser
,” J. Opt. Laser Technol.
43
, 475
–482
(2011
).4.
D. P.
Shidid
, M. H.
Gollo
, M.
Brand
, and M.
Mahdavian
, “Study of effect of process parameters on titanium sheet metal bending using Nd: YAG laser
,” J. Opt. Laser Technol.
47
, 242
–247
(2013
).5.
Y.
Shi
, Y.
Liu
, P.
Yi
, and J.
Hu
, “Effect of different heating methods on deformation of metal plate under upsetting mechanism in laser forming
,” J. Opt. Laser Technol.
44
, 486
–491
(2012
).6.
M.
Sistaninia
, M.
Sistaninia
, and H.
Moeanodini
, “Laser forming of plates using rotating and dithering beams
,” J. Comput. Mater. Sci.
45
, 480
–488
(2009
).7.
H.
Shen
and Z.
Yao
, “Study on mechanical properties after laser forming
,” J. Opt. Lasers Eng.
47
, 111
–117
(2009
).8.
A. H.
Roohi
, M. H.
Gollo
, and H. M.
Naeini
, “External force-assisted laser forming process for gaining high bending angles
,” J. Manuf. Process.
14
, 269
–276
(2012
).9.
J.
Kim
and S. J.
Na
, “Development of irradiation strategies for free curve laser forming
,” J. Opt. Laser Technol.
35
, 605
–611
(2003
).10.
D. J.
Chen
, S. C.
Wu
, M. Q.
Li
, and K.
Chou
, “Studies on laser forming of Ti–6Al–4V alloy sheet
,” J. Mater. Process. Technol.
152
, 62
–65
(2004
).11.
H. S.
Niehoff
and F.
Vollertsen
, “Non-thermal laser forming of sheet metal
,” 1st International Conference on High Speed Forming
(2004
).12.
J.
Cheng
and Y. L.
Yao
, “Process design of laser forming for three dimensional thin plates
,” J. Manuf. Sci. Eng.
126
, 217
–225
(2004
).13.
C.
Liu
and Y. L.
Yao
, “FEM-based process design for laser forming of doubly curved shapes
,” J. Manuf. Process.
7
, 109
–121
(2005
).14.
K. K. B.
Hon
, C.
Han
, and S. P.
Edwardson
, “Investigations on new scanning pattern for stereolithography
,” J. CIRP Ann. Manuf. Technol.
55
, 217
–220
(2006
).15.
E.
Abed
, S. P.
Edwardson
, K.
Bartkowiak
, G.
Dearden
, and K. G.
Watkins
, “Control method for 3d laser forming based on geometrical data
,” Laser Materials Processing Conference
, 2007
, pp. 200
–205
.16.
P.
Carlone
, G. S.
Palazzo
, and R.
Pasquino
, “Inverse analysis of the laser forming process by computational
,” J. Comput. Math. Appl.
55
, 2018
–2032
(2008
).17.
J.
Kim
and S. J.
Na
, “3D laser-forming strategies for sheet metal by geometrical information
,” J. Opt. Laser Technol.
41
, 843
–852
(2009
).18.
K.
Venkadeshwaran
, S.
Das
, and D.
Misra
, “Finite element simulation of 3-D laser forming by discrete section circle line heating
,” J. Eng. Sci. Technol.
2
, 163
–175
(2010
).19.
H.
Aoyama
and S.
Kishida
, “Die and mold-less forming of sheet materials-curved surface forming by laser irradiation
,” ASEAN Eng. J.
2
, 5
–11
(2012
).20.
S. S.
Chakraborty
, V.
Racherla
, and A. K.
Nath
, “Parametric study on bending and thickening in laser forming of a bowl shaped surface
,” J. Opt. Lasers Eng.
50
, 1548
–1558
(2012
).21.
L.
Yang
, M.
Wang
, Y.
Wang
, and Y.
Chen
, “Dynamic analysis on laser forming of square metal sheet to spherical dome
,” Int. J. Adv. Manuf. Technol
, 51
, 519
–539
(2010
).22.
K.
Maji
, D. K.
Pratihar
, and A. K.
Nath
, “Laser forming of a dome shaped surface: Experimental investigation, statistical analysis and neural network modeling
,” J. Opt. Lasers Eng.
53
, 31
–42
(2014
).23.
E. H.
Lockwood
, A Book of Curves
(Cambridge University Press
, Cambridge, England
, 1967
), p. 175
.© 2014 Laser Institute of America.
2014
Laser Institute of America
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