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Vol. 32 No. 1-2 (2007): Journal for Technology of Plasticity
Original articles

Forming limits of thin-walled pipes

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  • E. Šmehlíková,
  • R. Samek,
  • K. Podaný
E. Šmehlíková
Brno University of Technology, Faculty of Mechanical Engineering, Institute of Manufacturing Technology, Department of Metal Forming and Plastic, Technická 2, Brno, Czech Republic
R. Samek
Brno University of Technology, Faculty of Mechanical Engineering, Institute of Manufacturing Technology, Department of Metal Forming and Plastic, Technická 2, Brno, Czech Republic
K. Podaný
Brno University of Technology, Faculty of Mechanical Engineering, Institute of Manufacturing Technology, Department of Metal Forming and Plastic, Technická 2, Brno, Czech Republic

Published 2007-12-21

abstract views: 5 // Full text article (PDF): 2


Keywords

  • Tensile test,
  • radial expanding,
  • thin-walled tube,
  • polyurethane

How to Cite

Šmehlíková, E., Samek, R., & Podaný, K. (2007). Forming limits of thin-walled pipes. Advanced Technologies and Materials, 32(1-2), 77–85. Retrieved from https://atm-journal.uns.ac.rs/index.php/atm/article/view/jtp.2007.32.1-2.8
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

This paper deals with the investigation of formability of thin-walled pipes in status of the biaxial state of stresses. The uniaxial tensile test for tube samples does not give a true picture of cases existing in complicated forming operations such as a lateral or biaxial bulging etc.. The biaxial tests more correspond to real states of stresses. In literature are described tools providing the process of bulging by fluid. These tools are more of less complicated. This paper describes simple tool for biaxial tests applying the elastic tool as the forming medium. The first results and the theoretical way of main stress determination are mentioned too. The aim is to define the material characteristics of pipes and the values K and n.

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