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Prediction of Formability of Aluminum Alloy 5454 Sheet

알루미늄 5454 합금 판재의 성형성 예측

  • Kim, Chan-Il (Institute of Mechanical Engineering Technology, Kyungpook Nat'l Univ.) ;
  • Yang, Seung-Han (Dept. of Mechanical Engineering, Kyungpook Nat'l Univ.) ;
  • Kim, Young-Suk (Dept. of Mechanical Engineering, Kyungpook Nat'l Univ.)
  • Received : 2011.09.16
  • Accepted : 2011.11.25
  • Published : 2012.02.01

Abstract

In the automobile industry, reducing the weight is the most important objective for reducing air pollution and improving the fuel efficiency. For this reason, the application of aluminum sheets is increasing. When the sheets are applied to the automobile, using inappropriate variables for the material, product design, and press processing can generate tearing, wrinkling, and spring-back problems, which are the main types of failure in the manufacturing process. Therefore, it is necessary to reduce these failures by harmonizing the many variables and strictly managing the processes. In this research, we study the theoretical plasticity instability of Al5454 and obtain the forming limit diagram (FLD) using MATLAB. Moreover, we compare the theoretical FLD with an experimental FLD obtained from a stretching test.

Keywords

Formability;Aluminum Alloy;Plastic Instability;Forming Limit Diagram

Acknowledgement

Supported by : 한국연구재단

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