An experimental investigation of the degradation and buckling of circular tubes under cyclic bending and external pressure

1991 ◽  
Vol 12 (3) ◽  
pp. 229-263 ◽  
Author(s):  
Edmundo Corona ◽  
Stelios Kyriakides
Keyword(s):  
Experimental Investigation ◽  
External Pressure ◽  
Cyclic Bending ◽  
Circular Tubes

Buckling life estimation of circular tubes of different materials under cyclic bending

2010 ◽  
Vol 33 (2) ◽  
pp. 177-189 ◽  
Author(s):  
Kuo‐Long Lee ◽  
Chao‐Yu Hung ◽  
Hao‐Yuan Chang ◽  
Wen‐Fung Pan
Keyword(s):  
Cyclic Bending ◽  
Circular Tubes ◽  
Life Estimation

Finite Element Analysis on the Response of Local Sharp-Notched Circular Tubes under Cyclic Bending

2014 ◽  
Vol 626 ◽  
pp. 34-39
Author(s):  
Kuo Long Lee ◽  
Yun Wang ◽  
Wen Fung Pan
Keyword(s):  
Finite Element ◽  
Experimental Finding ◽  
Experimental Result ◽  
Notch Depth ◽  
Element Analysis ◽  
Cyclic Bending ◽  
Circular Tubes ◽  
Finite Element Software ◽  
Ansys Analysis ◽  
The Moment

In this study, the finite element software ANSYS was used to analyze the mechanical behavior of local sharp-notched circular tubes under cyclic bending. The local sharp-notched depths include: 0.2, 0.4, 0.6, 0.8 and 1.0 mm, and the local sharp-notched directions include: 0, 30, 60 and 90 degrees. According to the experimental result, the notch depth has no influence on the moment-curvature relationship. But the notch depth increases, the unsymmetrical phenomenon of the ovalization-curvature relationship becomes more obvious and the speed of ovalization accelerates. In addition, the ovalization-curvature relationship becomes symmetrical when the direction angle increases. The ANSYS analysis was compared with the experimental finding. Although some differences between the experimental and simulated results, but both trends were very similar.

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