Modeling of contact zones in air bending of sheet metals

Reducing unfavorable surface imprints, so-called "bending marks", at the contact zones between the tools and the workpiece is a major objective in air bending of sheet metals. In this work basic numerical investigations of the contact zones were performed in order to study the mechanisms o...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-07, Vol.1063 (1), p.12141
Main Authors: Domitner, J, Eckhard, R, Schweinzer, D, Leumüller, H, Heller, B, Sommitsch, C
Format: Article
Language:English
Subjects:
Bending
Computer simulation
Dies
Finite element method
Formability
Material properties
Mathematical models
Metal sheets
Numerical models
Physics
Plastic deformation
Tensile tests
Two dimensional models
Workpieces
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Summary:Reducing unfavorable surface imprints, so-called "bending marks", at the contact zones between the tools and the workpiece is a major objective in air bending of sheet metals. In this work basic numerical investigations of the contact zones were performed in order to study the mechanisms of bending mark formation. For that purpose a numerical model was created using the finite element software Abaqus. The two-dimensional model included the punch, the V-shaped die, the die insert and the steel sheet which has to be bent. All of these parts were treated as deformable. The elasto-plastic material properties required as input for the simulations were captured with uniaxial tensile tests. The influence of different insert materials on the plastic strain field inside the steel sheet was investigated. Air bending experiments were conducted for validating the results of the numerical simulations.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1063/1/012141