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International Journal of Forming Processes
1292-7775
Publication suspended
 

 ARTICLE VOL 4/3-4 - 2001  - pp.347-360  - doi:10.3166/ijfp.4.347-360
TITLE
Investigation of Springback Using Two Different Testing Methods

ABSTRACT

In the current work springback has been studied with two different testing methods using simulations as well as experiments. First the draw-bend test has been employed to investigate the springback due to bending loads. Therefore a sample strip has been pre-bent to a 90°-angle. Then, this strip was drawn over a cylinder emulating the radius of a die for a forming process like deep drawing. After force removal the resulting deviation from the 90°-angle was used to compare springback in simulation and experiment. The second test consisted of taking a ring out of the wall of a deep drawn cup. The ring was split with a single axial cut. The resultant geometry and residual radius were used to compare numerical and experimental results. The advantages of these simple tests compared to investigations on real industrial parts are the possibility to exclude friction (draw-bend test) and to define the forming conditions very specific (cup). Within first investigations different material models and finite element programs have been considered.

AUTEUR(S)
Martin ROHLEDER, Karl ROLL, Alexander BROSIUS, Matthias KLEINER

Reçu le 18 juillet 2001.    Accepté le 22 février 2002.

KEYWORDS
Sheet Metal Forming, Springback, Finite Element Simulation, Implicit and Explicit Method.

LANGUE DE L'ARTICLE
Anglais

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