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TECHNICAL PAPERS

On Multistage Deep Drawing of Axisymmetric Components

[+] Author and Article Information
Prakash Sonis, N. Venkata Reddy, G. K. Lal

Department of Mechanical Engineering, Indian Institute of Technology, Kanpur, India

J. Manuf. Sci. Eng 125(2), 352-362 (Apr 15, 2003) (11 pages) doi:10.1115/1.1556399 History: Received August 01, 2001; Revised August 01, 2002; Online April 15, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic representation of cup drawing, showing the co-ordinate system and dimensional notations
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Force acting on the die arc region
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Radial stresses in the flange element
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Variation of LDR with coefficient of friction for different values of strain hardening exponent for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R̄=1.5,R0=100 mm,rd=6.8 mm,t0=1.0 mm)
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Variation of LDR with die arc radius, rd for different values of normal anisotropy for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R0=100 mm, μ=0.1, t0=1.0 mm)
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Variation of LDR with die arc radius for different values of strain hardening exponent for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R̄=1.5,R0=100 mm,t0=1.0 mm)
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Calculated variation of LDR as a function of the die arc radius for different values of coefficient of friction for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R̄=1.5,R0=100 mm,t0=1.0 mm)
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Variation of LDR with coefficient of friction for different values of normal anisotropy for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R0=100 mm,rd=6.8 mm,t0=1.0 mm)
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Variation of LDR with strain hardening exponent for different values of coefficient of friction for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R̄=1.5,R0=100 mm,rd=6.8 mm,t0=1.0 mm)
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Variation of LDR with strain hardening exponent for different values of normal anisotropy for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R0=100 mm,rd=6.8 mm,t0=1.0 mm)
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Variation of LDR with normal anisotropy for different values of coefficient of friction for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa,R0=100 mm,rd=6.8 mm,t0=1.0 mm)
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Variation of LDR with normal anisotropy for different values of strain hardening exponent for redraw (σ̄=610ε̄0.263 MPa,σy=155 MPa, μ=0.1, R0=100 mm,rd=6.8 mm,t0=1.0 mm)
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Variation of LDR with normal anisotropic value for flat bottom cups drawn from AA 3003. (σ̄=157.1ε̄0.235 MPa,σy=41 MPa,rc0=50.8 mm,rd=8.635 mm,t0=1.016 mm)
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Variation of LDR with normal anisotropic value for flat bottom cups drawn from soft aluminum. (σ̄=12.02ε̄0.227 Kp/mm2y=2.93 Kp/mm2,rc0=50.8 mm,rd=8.635 mm,t0=1.016 mm)
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Section of a partial drawn cup

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