Mechanical behavior and buckling failure of sharp-notched circular tubes under cyclic bending

Lee, Kuo-Long

doi:10.12989/sem.2010.34.3.367

Cited by 23 publications

(15 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equation (1) has been widely used for simulating curvature-controlled cyclic bending tests. Lee [21] studied the tubes with different sharpnotched depths subjected to cyclic bending. Based on the experimental data, the relationship was proposed by him to be: or ln ln…”

Section: Collapse Of Sharp-notched 304 Stainless Steel Tubes Under Cymentioning

confidence: 99%

“…In 2010, Lee et al [20] studied the variation in ovalization of sharp-notched circular tubes subjected to cyclic bending. Lee [21] examined the mechanical behavior and buckling failure of sharpnotched circular tube under cyclic bending. Hung and Lee [22] investigated the influence of curvature-rate on the response and collapse of sharp-notched circular tubes under cyclic bending.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Influence of Diameter-to-Thickness Ratios on the Response and Collapse of Sharp-Notched Circular Tubes under Cyclic Bending

2012

View full text Add to dashboard Cite

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.

show abstract

Section: Collapse Of Sharp-notched 304 Stainless Steel Tubes Under Cymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of Diameter-to-Thickness Ratios on the Response and Collapse of Sharp-Notched Circular Tubes under Cyclic Bending

2012

View full text Add to dashboard Cite

show abstract

“…Lee et al [13] experimentally studied the relationship between the variation of ovalization and the number of bending cycles for sharp-notched circular tubes subjected to cyclic bending. Lee [14] then later investigated the response of sharp-notched SUS304 stainless steel tubes under cyclic bending, and found the asymmetrical, ratcheting, and increasing trends of ovalization-curvature relationships. In addition, Lee et al [15] evaluated the viscoplastic response and buckling of sharpnotched SUS304 stainless steel circular tubes undertaking cyclic bending.…”

Section: Introductionmentioning

confidence: 99%

The Failure of Local Sharp-Dented 6061-T6 Aluminum Alloy Tubes With Different Diameter-to-Thickness Ratios Under Cyclic Bending

Lee

Lin

Pan

2018

The International Conference on Applied Mechanics and Mechanica

View full text Add to dashboard Cite

In this study, the failure of local sharp-dented 6061-T6 aluminum alloy tubes with different diameter-to-thickness ratios submitted to cyclic bending are investigated. Different diameter-to-thickness ratios of 16.5, 31.0 and 60.0 were considered. The dent depths of tubes were considered from very small to approximately 0.6 times the tube's wall thickness. From the experimental ovalization-curvature relationship, it exhibited an increasing and ratcheting manner when the number of cycles increased. The larger dent depth led to more asymmetrical ovalization-curvature relationship and the greater increase of the ovalization. Furthermore, for a certain diameter-tothickness ratio, five unparallel straight lines corresponding to five different dent depths were found for the controlled curvature-number of cycles required to produce failure relationship on a log-log scale. Finally, a theoretical model was proposed for simulating the aforementioned relationship. Through comparison with the experimental data, the theoretical model can properly simulate the experimental findings.

show abstract

“…In 2010, Lee et al [28] studied the variations in ovalization that occur in sharp-notched circular tubes subjected to cyclic bending. Lee [29] later investigated the mechanical behavior and buckling failure of sharp-notched circular tubes under cyclic bending, and Lee et al [30] experimentally discussed the viscoplastic response and collapse of sharp-notched circular tubes subjected to cyclic bending. However, all investigations of the sharp notch were the circumferential sharp notch as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis on the response of 6061-T6 aluminum alloy tubes with a local sharp cut under cyclic bending

Chung

Lee

Pan³

2016

J. vibroeng.

Self Cite

View full text Add to dashboard Cite

In this paper, the finite element software ANSYS Workbench 14.0 is used to analyze the moment-curvature and ovalization-curvature relationships of 6061-T6 aluminum alloy tubes with a local sharp cut under curvature-controlled symmetrical cyclic bending. The cut depths of 0.4, 0.8, 1.2, 1.6 and 2.0 mm were considered. The experimental moment-curvature relationship exhibited an almost steady loop from the beginning of the first cycle; the cut depth had almost no influence on the curves. Moreover, the ovalization-curvature curve increased in an increasing, unsymmetrical and ratcheting manner with the number of bending cycles. Large cut depths resulted in larger ovalization of the tube cross-section. The ANSYS analysis was compared with the experimental finding. The simulated results exhibited close correspondence to those obtained from the experiments.

show abstract

Mechanical behavior and buckling failure of sharp-notched circular tubes under cyclic bending

Cited by 23 publications

References 15 publications

The Influence of Diameter-to-Thickness Ratios on the Response and Collapse of Sharp-Notched Circular Tubes under Cyclic Bending

The Influence of Diameter-to-Thickness Ratios on the Response and Collapse of Sharp-Notched Circular Tubes under Cyclic Bending

The Failure of Local Sharp-Dented 6061-T6 Aluminum Alloy Tubes With Different Diameter-to-Thickness Ratios Under Cyclic Bending

Finite element analysis on the response of 6061-T6 aluminum alloy tubes with a local sharp cut under cyclic bending

Contact Info

Product

Resources

About