A Same Area Method Used to Calculate the Strain in Forming for an Axisymmetric Workpiece

Abstract:

An experimental study is conducted to explore a new method to calculate the strain in axisymmetric workpiece forming. When designing deep drawing die for an axisymmetric workpiece, the principal strain during the forming is needed to estimate formability and to decide whether the forming is finished in one pass. Strain calculation is a difficult task, so an ideal same area method used to calculate the strain for an axisymmetric workpiece along with a correction same area method considered thickness reduction rate is proposed here. The deep drawing test for an axisymmetric workpiece is used to obtain the strain along circumference and generatrix direction. The strain along the two directions calculated by the ideal same area method and correction same area method is compared with experimental results. The results show that ideal same area method can be used to calculate the strain during the forming process for an axisymmetric workpiece and the result from correction same area method is close to the experiment.

• Periodical: Advanced Materials Research (Volume 936)
• Pages: 1609-1613
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.936.1609
• Online since: June 2014
• Authors: Zhi Ren Han*, Qiang Xu, Ze Bing Yuan
• Keywords: Forming Limited Diagram, Sheet Metal Forming, Strain Analysis, Thickness Reduction Rate

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