Springback Analysis of Draw-Bending of 980 MPa Cold Rolled Steel Sheet and Its Experimental Validation

Journal Article · Mon Jan 17 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3552397· OSTI ID:21510161

Noma, Nobuyasu ^[1]; Kuwabara, Toshihiko ^[2]

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1. Department of Mechanical Systems Engineering, Graduate School of Tokyo University of Agriculture and Technology, 2-24-16, Nakacho, Koganei-shi, Tokyo 184-8588 (Japan)
2. Institute of Symbiotic Science and Technology, Division of Advanced Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Nakacho, Koganei-shi, Tokyo 184-8588 (Japan)

Draw-bending experiment is carried out using a 1.2 mm-thick high strength steel sheet with a tensile strength of 980 MPa and the residual curvature of the draw-bent specimens are precisely measured. The die profile of the draw-bending testing machine rotates, so that the effect of friction force on the curvature data after springback can be neglected. Moreover, in order to quantitatively evaluate the Bauschinger effect of the test material, stress reversal tests are performed using an in-plane stress reversal testing machine. Furthermore, the finite element analyses (FEA) of the draw-bending experiment are carried out. The effect of the work hardening models (isotropic or combined), element types (shell or solid), and the number of integration points in the through-thickness direction on the amount of springback (residual curvature) are investigated in detail.

• OSTI ID: 21510161
• Journal Information: AIP Conference Proceedings, Vol. 1315, Issue 1; Conference: AMPT2010: International conference on advances in materials and processing technologies, Paris (France), 24-27 Oct 2010; Other Information: DOI: 10.1063/1.3552397; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BENDING
FINITE ELEMENT METHOD
FRICTION
PRESSURE RANGE MEGA PA 100-1000
SOLIDS
STEELS
STRAIN HARDENING
STRESSES
TENSILE PROPERTIES
THICKNESS
ALLOYS
CALCULATION METHODS
CARBON ADDITIONS
DEFORMATION
DIMENSIONS
HARDENING
IRON ALLOYS
IRON BASE ALLOYS
MATHEMATICAL SOLUTIONS
MECHANICAL PROPERTIES
NUMERICAL SOLUTION
PRESSURE RANGE
PRESSURE RANGE MEGA PA
TRANSITION ELEMENT ALLOYS