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TECHNICAL PAPERS

Experimental and 3D Finite Element Studies of CW Laser Forming of Thin Stainless Steel Sheets

[+] Author and Article Information
Guofei Chen, Xianfan Xu

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288

J. Manuf. Sci. Eng 123(1), 66-73 (Apr 01, 2000) (8 pages) doi:10.1115/1.1347036 History: Received June 01, 1999; Revised April 01, 2000
Copyright © 2001 by ASME
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References

Figures

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Schematic of the laser bending process (a) during heating (b) development of bending angle after cooling
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Mesh for the 3D simulation of laser bending process: (a) the total mesh (b) the dense mesh around the laser path and the transition mesh pattern
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Thermal and mechanical properties of full-hard 301 stainless steel
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Temperature distributions along the y-direction at x=0 at different times (a) at the top surface (b) at the bottom surface
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Temperature distribution along the z-direction underneath the laser beam center (x=0 mm, y=0.42 mm,t=0.063 s)
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Stress distribution at the top surface along the line x=0 (a) σxx, (b) σyy
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Residual plastic strain distribution at the top surface along the laser path at x=0
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Residual stress distribution at the top surface along the line y=0.5 mm
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Displacement (uz) along the x-axis at t=0.096 s
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History of the displacement uz at the center of the free end
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(a) Measured bending angle as a function of laser power at a constant scanning velocity of 8 mm/s and a constant beam diameter of 40 μm (b) measured bending angle as a function of the laser beam diameter at a constant laser power of 2 W and a constant scanning velocity of 8 mm/s
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Measured and calculated bending angles as a function of the scanning velocity at a constant laser power of 2 W and a constant beam diameter of 80 μm

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