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Comparison of the numerical and experimental results of the sheet metal flange forming based on shell-elements types

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Abstract

Flanging is a common sheet metal forming operation to produce structural sheet metal components. Flanging is used to give a component smooth rounded edge, and to provide jointing and assembling of components. In this paper, the simulation and experimental results of two types of z-flanging are investigated. First, a z-flange forming which incorporates mating drawbeads on the main and backup punches is studied. Drawbeads are used in commercial stretch flange operations to control or limit the rate of cut-out expansion. A z-flange forming is then performed on a blank with pre-punch created holes. The non-uniform deformation of the hole and undulating are two main important defects. Stretch z-flange forming is simulated using the explicit finite element (FE) LS-DYNA software. In three dimensions FE simulation, four different types of shell elements have been used to determine the one showing the best agreement with the experimental results.

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Authors and Affiliations

  1. School of Engineering, Department of Mechanical Engineering, Imam Hussein University, Tehran, Iran, 1698716111

    Abbas Vafaeesefat

  2. Department of Mechanical Engineering, Science & Research Branch Islamic Azad University, Tehran, Iran, 1477893855

    Morteza Khanahmadlu

Authors
  1. Abbas Vafaeesefat
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  2. Morteza Khanahmadlu
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Correspondence to Abbas Vafaeesefat.

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Vafaeesefat, A., Khanahmadlu, M. Comparison of the numerical and experimental results of the sheet metal flange forming based on shell-elements types. Int. J. Precis. Eng. Manuf. 12, 857–863 (2011). https://doi.org/10.1007/s12541-011-0114-8

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  • DOI: https://doi.org/10.1007/s12541-011-0114-8

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