Nonlinear Kinematic Hardening Identification for Anisotropic Sheet Metals With Bending-Unbending Tests
An inverse identification technique is proposed based on bending-unbending experiments on anisotropic sheet-metal strips. The initial anisotropy theory of plasticity is extended to include the concept...
An inverse identification technique is proposed based on bending-unbending experiments on anisotropic sheet-metal strips. The initial anisotropy theory of plasticity is extended to include the concept...
Generation of Cyclic Stress-Strain Curves for Sheet Metals
The main objective of this paper is to obtain the first few stress-strain loops of sheet metals from reverse loading so that the springback can be simulated accurately. Material parameters are identif...
The main objective of this paper is to obtain the first few stress-strain loops of sheet metals from reverse loading so that the springback can be simulated accurately. Material parameters are identif...
Stress and Strain Histories of Multiple Bending-Unbending Springback Process
J. Eng. Mater. Technol. -- October 2001 -- Volume 123, Issue 4, 384 (7 pages)
doi:10.1115/1.1395574
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A drawbead model with sheet metal passing through multiple bending-unbending processes was employed in this study to understand the springback phenomenon and to develop a numerical simulation technique for more accurate prediction of the springback process. The deformation process is simulated using an implicit finite element modeling code. The predicted results were compared with the physically measured ones, including clamping and restraining forces, thickness strains, and the curvatures of the deformed sheets. Consideration of the Bauschinger effect and employment of a combined isotropic and kinematic hardening models greatly improve the prediction accuracy. Stress and strain histories under various conditions during the drawing process are studied in detail in an attempt to provide a better basis for comparison for dynamic explicit solutions.
©2001 ASME
| History: | Received July 24, 2001 | |
| doi: | http://dx.doi.org/10.1115/1.1395574 | |
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BibSonomy
KEYWORDS and PACS
Bauschinger effect,
metals,
bending,
stress analysis,
stress-strain relations,
forming processes,
simulation,
drawing (mechanical),
modelling,
work hardening,
finite element analysis
- 81.40.Lm
Materials science Treatment of materials and its effects on microstructure and properties Deformation, plasticity, and creep - 46.32.+x
Continuum mechanics of solids Static buckling and instability - 02.60.Cb
Mathematical methods in physics Numerical approximation and analysis Numerical simulation; solution of equations - 81.20.Hy
Materials science Methods of materials synthesis and materials processing Forming; molding, extrusion etc. - 46.35.+z
Continuum mechanics of solids Viscoelasticity, plasticity, viscoplasticity - 62.20.Fe
Mechanical and acoustical properties of condensed matter Mechanical properties of solids Deformation and plasticity (including yield, ductility, and superplasticity) - 81.40.Ef
Materials science Treatment of materials and its effects on microstructure and properties Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization - YEAR: 2001
