Interactive Resource icon  Wrinkles Formed by Deep Drawing

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Resource type: Interactive Resource
Description: In the flange under the influence of the tangential compressive stress, the blank has a tendency to buckle. The resulting folds are called first order wrinkles. This interactive animation schematically shows deep drawing of a conical part, which is considerably more difficult than that of cylindrical parts. Two factors contribute to complexity of deep drawing of conical, parabolic or spherical parts: first, the drawing load must be transmitted by only a small cross section of the sheet, so the danger of local cracking is high, even for small drawing ratios; and secondly, deformation takes place not only in the flange, but also in the zone between the die and the punch. Here the workpiece is unsupported and tangential compressive stresses can cause first order wrinkles.
Keywords: sheet • deep drawing • wrinkles • punch
Categories: Materials > Metals & alloys > Aluminium & alloys
Processes > Shaping > Deformation > Sheet forming
Product Forms > Flat > Sheet
Created by: MATTER, The University of Liverpool
European Aluminium Association, Brussels
Contributions: Jürgen Hirsch, Hydro Aluminium Deutschland GmbH
Stefan Wagner, Universität Stuttgart
Jens Baur, Universität Stuttgart
Alexander Felde, Universität Stuttgart
Peter Unseld, Universität Stuttgart
Panajotis Delinasakis, Universität Stuttgart
Mihai Vulcan, Universität Stuttgart
Dorel Banabic, Universität Stuttgart
Marc Ryckeboer, Sapa
License: This resource is released under the Creative Commons Attribution Non-Commercial No Derivatives license (2.0 UK: England & Wales).
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Date created: 23 September 2005
Date added: 21 December 2009
Resource ID: 2578