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Quantitative Validation of FEM Simulations for Incremental Sheet Forming Using Optical Deformation Measurement

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Abstract:

The present paper focuses on a new methodology to quantitatively evaluate finite element calculations on incremental sheet forming (ISF). ISF is a new manufacturing process for prototypes and small lot sizes. In ISF, a part is manufactured by the CNC-driven movement of a simple tool, giving rise to very challenging problems concerning the efficient modeling of the alternating contact conditions and the material's response to the cyclic deformation. The quantitative validation of the finite element analysis is achieved by an optical deformation measurement system which has been enhanced by a new calibration procedure, yielding a precisely defined local coordinate system for deformation measurements during forming. In combination with mapping algorithms for large point sets, this allows for a quantitative validation of process simulations and material input data.

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Periodical:

Advanced Materials Research (Volumes 6-8)

Pages:

509-516

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.6-8.509

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Cite this paper

Online since:

May 2005

Authors:

M. Bambach, Gerhard Hirt, J. Ames

Keywords:

Computer Numerical Control CNC, Finite Element Model (FEM), Sheet Metal

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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