Optimization of the Modified Yoshida Buckling Test to Investigate the Influence of Curvature

Abstract:

During deep drawing process compressive stresses are induced in the sheet metal, which can cause undesirable wrinkling. On the other hand a high sheet thickness and high local surface curvature counteract the wrinkling tendency by stabilizing the blank. To investigate these factors influencing the wrinkling initiation experimentally, a modified and the requirements customized test form based on a simple test geometry, the so called Yoshida buckling test, is created. This enables to take into account surface curvature in the region of instability.

• Periodical: Advanced Materials Research (Volume 1140)
• Pages: 67-74
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1140.67
• Online since: August 2016
• Authors: Sven Schreyer*, Wolfram Volk
• Keywords: Deep Drawing, Modified Yoshida Buckling Test, Sheet Metal

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