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Structural Engineering and Mechanics Volume 7, Number 5, May 1999 , pages 457-471 DOI: https://doi.org/10.12989/sem.1999.7.5.457 |
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Viscoplastic analysis of thin-walled tubes under cyclic bending |
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Pan WF, Hsu CM
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| Abstract | ||
| In this paper, different curvature-rates are controlled to highlight the characteristic of viscoplastic response in cyclic bending tests. The curvature-ovalization apparatus, which was designed by Pan et al. (1998), is used for conducting the curvature-controlled experiments on thin-walled tubular specimens for AISl 304 stainless steel under cyclic bending. The results reveals that the faster the curvature-rate implies, the fast degree of hardening of the metal tube. However, the ovalization of the tube cross-section increases when the curvature-rate increases. | ||
| Key Words | ||
| viscoplastic response, thin-walled tube, cyclic bending, endochronic theory. | ||
| Address | ||
| Pan WF, Natl Cheng Kung Univ, Dept Engn Sci, Tainan 701, Taiwan Natl Cheng Kung Univ, Dept Engn Sci, Tainan 701, Taiwan Tung Fung Jr Coll Technol, Dept Arts Craft, Kao Hsiung Cty, Taiwan | ||