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Enhancement on deformation uniformity of double curvature shell by hydroforming process and curved blank-holder surface

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Abstract

To manufacture a component with uniform deformation as well as homogeneous properties to fulfill the need of good consistency in service, both tool geometry and forming method were taken into account on the forming of double curvature shell. Experimental setups with planed and curved blank-holder surfaces combined with hydroforming process were performed on the evaluation of stain and thickness distribution compared with conventional deep drawing process. The average strain and its standard deviation on the formed shell were calculated as the indicators of whole strain level and strain uniformity. The results show that the most homogeneous strain, tensile strength, and micro-hardness can be achieved by the combination of hydroforming process and curved blank-holder surface.

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Authors and Affiliations

  1. National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin, 150001, China

    Wei Liu, Lihui An & Shijian Yuan

  2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Wei Liu & Shijian Yuan

  3. Capital Aerospace Machinery Company, Beijing, 100076, China

    Lihui An

Authors
  1. Wei Liu
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  2. Lihui An
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  3. Shijian Yuan
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Corresponding author

Correspondence to Wei Liu.

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Highlights

(a) Both tool geometry and forming method were considered on uniformity of strain and property.

(b) Hydroforming process has great effect both on whole strain level and strain uniformity with planed and curved blank-holder.

(c) Both the whole strain level and the strain uniformity can be improved by hydroforming process with curved blank-holder.

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Liu, W., An, L. & Yuan, S. Enhancement on deformation uniformity of double curvature shell by hydroforming process and curved blank-holder surface. Int J Adv Manuf Technol 92, 1913–1922 (2017). https://doi.org/10.1007/s00170-017-0301-6

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  • DOI: https://doi.org/10.1007/s00170-017-0301-6

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