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Prediction of forming limit diagrams using the modified M-K method in hydroforming of aluminum tubes

  • Thematic Issue: Formability of metallic materials
  • Published:
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Abstract

The purpose of this study is to predict forming limit diagrams (FLDs) for AA6063 and AA6065 aluminum seamless extruded tubes. The Modified Marciniak and Kuczynski (M-K) method is used with Barlat’s 1989 anisotropic yield function and Voce equation. Furthermore, a new calibration method for FLD determination based on the modified M-K method is also applied. The predicted forming limits correlate well with experimental data. It is shown that in comparison to other methods, this method is able to predict necking in tube hydroforming with more accuracy. Therefore, this method can be used to predict bursting in a wide range of practical tube hydroforming of aluminum alloys.

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Notes

  1. FLD0 is the major strain in plane strain state that results in necking.

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Acknowledgment

The author would like to acknowledge the financial support of Iran National Science Foundation (INSF).

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Authors and Affiliations

  1. School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran

    R. Hashemi, R. Madoliat & A. Afshar

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  1. R. Hashemi
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  2. R. Madoliat
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  3. A. Afshar
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Correspondence to R. Hashemi.

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Hashemi, R., Madoliat, R. & Afshar, A. Prediction of forming limit diagrams using the modified M-K method in hydroforming of aluminum tubes. Int J Mater Form 9, 297–303 (2016). https://doi.org/10.1007/s12289-014-1207-6

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  • DOI: https://doi.org/10.1007/s12289-014-1207-6

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