investigation of the geometry of metal tube walls after necking in uniaxial tension
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ID: 212527
2017
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Abstract
Abstract: In order to characterize the deformation and true stress–strain relation of metal tubes, the geometry of tube walls after necking in uniaxial tension need to be determined. The paper investigated the necking process of metal tube. A large number of tensile tests and finite element analysis of 1Cr18Ni9Ti tubes with different sizes were conducted. It was found that the geometry of outer tube wall in the necking region can be described using a logistic regression model. The final geometry of the tube is determined by original tube diameter and wall thickness. The offset of tube walls are affected by two competing factors: volume constancy and necking. The offset distances of outer and inner walls are mainly affected by original wall thickness. The length of the necking zone is more influenced by original tube diameter. Tube elongation at fracture increases slightly as tube diameter gets larger, while the wall thickness has almost no impact on the elongation.
| Reference Key |
li2017metalsinvestigation
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|---|---|
| Authors | ;Chong Li;Daxin E;Jingwen Zhang;Ning Yi |
| Journal | seminars in cancer biology |
| Year | 2017 |
| DOI |
10.3390/met7030100
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| URL | |
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