Viscoplastic collapse of sharp-notched circular tubes under cyclic bending

Kuo Long Lee, Chien Min Hsu, Wen Fung Pan

研究成果: Article同行評審

20 引文 斯高帕斯(Scopus)

摘要

This study discusses the experimental result of the viscoplastic response and collapse of sharp-notched 316L stainless steel tubes with different notched depths subjected to cyclic bending. The tube bending machine and curvature-ovalization measurement apparatus were used for conducting the symmetric curvature-controlled cyclic bending. To highlight the viscoplastic behavior, three different curvature-rates, 0.0035, 0.035 and 0.35 m -1s-1, were controlled. Observations of a certain curvature-rate reveal that five almost parallel lines corresponding to five different notch-depth (0.2, 0.4, 0.6, 0.8 and 1.0 mm) tubes were presented in the experimental relationship between the cyclic controlled curvature and the number of cycles needed to produce buckling on a log-log scale. However, the slopes for the three different curvature-rates are different. An empirical formulation was proposed to simulate the aforementioned relationship. When comparing with the experimental findings, the simulation was in good agreement with the experimental data.

原文English
頁(從 - 到)629-641
頁數13
期刊Acta Mechanica Solida Sinica
26
發行號6
DOIs
出版狀態Published - 2013 十二月

All Science Journal Classification (ASJC) codes

  • 計算力學
  • 材料力學
  • 機械工業

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