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

21 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)629-641
期刊Acta Mechanica Solida Sinica
出版狀態Published - 2013 12月

All Science Journal Classification (ASJC) codes

  • 計算力學
  • 材料力學
  • 機械工業


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