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2024 | OriginalPaper | Chapter

Effect of Material on Strain Direction in Tube Expansion Drawing Process

Authors : Shiliang Zhang, Takashi Kuboki, Masayoshi Akiyama, Shohei Kajikawa

Published in: Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity

Publisher: Springer Nature Switzerland

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Abstract

Conventional tube drawing methods have the disadvantages that thickness reduction in one pass is small. This paper proposes a tube drawing method for overcoming this disadvantage and the method expands the diameter while drawing. At first, the tube is flared by pushing the plug into the tube end. Then, the plug is drawn by chucking the flared end, and the entire tube is expanded. Tensile circumferential and axial stress reduce the tube thickness effectively during the plug drawing. In this study, the influence of the material on the forming characteristics, such as thickness reduction and strain state, was investigated by experiments and finite element analysis. The results show that the forming limit is larger when the elongation to initiating the necking and the R-value of the material are large. Materials with large n values and large friction coefficients undergo a deformation close to biaxial stretching to realize high thickness reduction.

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Title: Effect of Material on Strain Direction in Tube Expansion Drawing Process
Authors: Shiliang Zhang
Takashi Kuboki
Masayoshi Akiyama
Shohei Kajikawa
Publisher: Springer Nature Switzerland
Book: Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity
Print ISBN: 978-3-031-41022-2

Electronic ISBN: 978-3-031-41023-9

Copyright Year: 2024
DOI: https://doi.org/10.1007/978-3-031-41023-9_60