The influence of diameter-to-thickness ratios on the response and collapse of sharp-notched circular tubes under cyclic bending

K. L. Lee, C. M. Hsu, W. F. Pan

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

This paper discusses an experimental investigation of the behavior of sharp-notched circular tubes subjected to cyclic bending. The sharp-notched circular tubes of 304 stainless steel with three different diameter-to-thickness ratios (D o/ t) were tested under symmetric curvature-controlled cyclic bending. It has been shown that the moment-curvature curves exhibited the loops with cyclic hardening and gradually becoming steady after a few cycles for all tested tubes. The ovalization-curvature curves revealed unsymmetric, ratcheting and increasing behavior with the number of cycles. In addition, five almost parallel lines corresponding to five different notch depths for each D o/ t ratio were found from the experimental relationship between the cyclic controlled curvature and the number of cycles necessary to produce buckling on a log-log scale. Finally, an empirical relationship was proposed so it could be used for simulating the aforementioned relationship. By comparing with the experimental finding, the derived empirical relationship was in good agreement with the experimental data.

原文English
頁(從 - 到)461-468
頁數8
期刊Journal of Mechanics
28
發行號3
DOIs
出版狀態Published - 2012 9月

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 機械工業
  • 應用數學

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