Although considerable effort has gone into characterizing the laser forming process in terms of process parameters and conditions, there has been little emphasis on the effects of the mechanical and thermal constraints introduced by the clamping method utilized for a desired application. This research suggests means for investigating and predicting the resulting geometry of a specimen due to laser operation in close proximity to an array of imposed thermo-mechanical constraints for single scan applications; specifically, the resulting average bending angle as well as bending angle variations along the laser scanning path. This is accomplished by initially only considering these effects on the thermal field. Conclusions are then drawn about the nature of the mechanical effects. These conclusions are validated through numerical simulation as we ll as physical experimentation.

1.
Vollertsen
,
F.
(
1994
)
Mechanisms and Models for Laser Forming, Laser Assisted Net Shape Engineering
,
Proceedings of the lane ’94
, Vol.
1
, pp.
345
360
.
2.
Mucha
,
Z.
,
Hoffman
,
J.
,
Kalita
,
W.
and
Mucha
,
S.
(
1997
)
Laser Forming of Thick Free Plates
,
Laser Assisted Net Shape Engineering, Proceeding of the Lane‘97
, pp.
383
392
.
3.
Bao
,
J.
, and
Yao
,
Y.L.
(
2001
)
Analysis and Prediction of Edge Effects in Laser Bending
,
J. Manufacturing Science and Engineering, ASME
, Vol.
123
, pp.
53
61
.
4.
Hoffman
,
E.G.
(
1996
)
Setup Reduction Through Effective Work Holding
,
Industrial Press Inc.
New York, NY
.
5.
Wang
,
Y.W.
and
Pelinescu
,
D.M.
(
2002
)
Prediction of Workpiece-Fixture Contact Forces Using the Rigid Body Model
, Publication Source Unknown.
6.
Karafillis
,
A.P.
and
Boyce
,
M.C.
(
1992
)
ToolingDesign in Sheet Metal Forming Using Springback Calculations
,
Intl. J. Mech. Science
, Vol.
34
, No.
2
, pp.
113
131
.
7.
Roy
,
U.
and
Liao
,
J.
(
2002
)
Fixturing Analysis for Stability Consideration in an Automated Fixture Design System, ASME
,
J. Manufacturing Science and Engineering
, Vol.
124
, pp.
98
104
.
8.
Edwardson
,
S.P.
,
Watkins
,
K.G.
,
Abed
,
E.
Bartkowiak
,
K.
and
Dearden
,
G.
(
2005
)
Geometrical Influences on the Bend Angle Rate per Pass During Multi-Pass 2D Laser Forming
,
Proc. IWOTE’05, Intl. Workshop on Thermal Forming
, pp.
29
46
9.
Jones
,
J.E.
, (
2005
)
Internal Communications
, NATechnology.
10.
Lee
,
K.
and
Lin
,
J.
(
2002
)
Transient Deformation of Thin Metal Sheets During Pulsed Laser Forming
,
Optics & Laser Technology
,
34
, pp.
639
648
.
11.
Vashchenko
,
A.P.
,
Suntsov
,
G.N.
,
Belalova
,
G.V.
and
Medvedev
,
A.A.
(
1991
)
Mechanical Properties of Low Carbon Steel Over a Wide Range of Temperature and Strain Rates Applied to Processes of Thin Sh eet Rolling
,
Strength Mat.
,
22
, pp.
1205
1214
.
12.
Maekwa
,
K
,
Shirakashi
,
T.
and
Usui
,
E.
Flow Stress of Low Carbon Steel at High Temperature and Strain Rate (part 2)-Flow Stress Under Variable Temperature and Variable Strain Rate
,
Bull. Jpn. Soc. Precis. Eng.
,
17
, pp.
167
172
.
13.
Cheng
,
J.
and
Yao
,
Y.L.
(
2001
)
Cooling Effects in Multiscan Laser Forming
,
J. Man. Proc. SME
, Vol.
3
, No.
1
,pp.
60
72
.
14.
Postaciaglu
,
N.
,
Kapadia
,
P.
, and
Dowden
,
J.M.
(
1997
)
Thermal Stresses Generated by a Moving Elliptical Weldpool in the Welding of Thin Metal Sheets
,
J. Phys., D: Appl.Phys.
, pp.
2304
2312
.
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