Published 2007-12-21
abstract views: 8 // Full text article (PDF): 6
Keywords
- Tensile test,
- radial expanding,
- thin-walled tube,
- polyurethane
How to Cite
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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.