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 JAMP  Vol.2 No.6 , May 2014
The Influence of Notch Depth on the Response of Local Sharp-Notched Circular Tubes under Cyclic Bending
Abstract: In this paper, the mechanical behavior and buckling failure of SUS304 stainless steel tubes with different local sharp-notched depths subjected to cyclic bending were experimentally investigated. It can be seen that the experimental moment-curvature relationship exhibits cyclic hardening and becomes a steady loop after a few cycles. However, the experimental ovalization-curvature relationship exhibits an increasing and ratcheting manner with the number of the bending cycles. In addition, higher notch depth of a tube leads to a more severe unsymmetrical trend of the ovalization-curvature relationship. It has been observed that the notch depth has almost no influence on the moment-curvature relationship. But, it has a strong influence on the ovalization-curvature relationship. Finally, the theoretical model proposed by Kyriakides and Shaw [1] was used in this study for simulating the controlled curvature-number of cycles to produce buckling relationship. Through comparison with the experimental data, the theoretical model can properly simulate the experimental findings
Cite this paper: Lee, K. , Meng, C. and Pan, W. (2014) The Influence of Notch Depth on the Response of Local Sharp-Notched Circular Tubes under Cyclic Bending. Journal of Applied Mathematics and Physics, 2, 335-341. doi: 10.4236/jamp.2014.26040.
References

[1]   Kyriakides, S. and Shaw, P.K. (1987) Inelastic Buckling of Tubes under Cyclic Bending. ASME Journal of Pressure Vessel and Technology, 109, 169-178. http://dx.doi.org/ 10.1115/1.3264891

[2]   Corona, E. and Kyriakides, S. (1991) An Experimental Investigation of the Degradation and Buckling of Circular Tubes under Cyclic Bending and External Pressure. Thin-Walled Structures, 12, 229-263. http://dx.doi.org/10.1016/0263-8231(91)90048-N

[3]   Vaze, S. and Corona, E. (1998) Degradation and Collapse of Square Tubes under Cyclic Bending. Thin-Walled Structures, 31, 325-341. http://dx.doi.org/ 10.1016/S0263-8231(98)00018-4

[4]   Corona, E., Lee, L.H. and Kyriakides, S. (2006) Yield Anisotropic Effects on Buckling of Circular Tubes under Bending. International Journal of Solids and Structures, 43, 7099-7118. http://dx.doi.org/ 10.1016/j.ijsolstr.2006.03.005

[5]   Limam, A., Lee, L.H. and Kyriakides, S. (2012) On the Collapse of Dented Tubes under Combined Bending and Internal Pressure. International Journal of Solids and Structures, 55, 1-12. http://dx.doi.org/10.1016/j.ijmecsci.2011.10.005

[6]   Pan, W.F., Wang, T.R. and Hsu, C.M. (1998) A Curvature-Ovalization Mea-surement Apparatus for Circular Tubes under Cyclic Bending. Experimental Mechanics, 38, 99-102. http://dx.doi.org/ 10.1007/BF02321651

[7]   Lee, K.L., Pan, W.F. and Kuo, J.N. (2001) The Influence of the Diameter-to-Thickness Ratio on the Stability of Circular Tubes under Cyclic Bending. International Journal of Solids and Structures, 38, 2401-2413. http://dx.doi.org/10.1016/S0020-7683(00)00116-5

[8]   Lee, K.L., Pan, W.F. and Hsu, C.M. (2004) Experimental and Theoretical Evaluations of the Effect between Diameter-to-Thickness Ratio and Curvature-Rate on the Stability of Circular Tubes under Cyclic Bending. JSME International Journal, Series A, 47, 212-222. http://dx.doi.org/ 10.1299/jsmea.47.212

[9]   Chang, K.H. and Pan, W.F. (2009) Buckling Life Estimation of Circular Tubes under Cyclic Bending. International Journal of Solids and Structures, 46, 254-270. http://dx.doi.org/ 10.1016/j.ijsolstr.2008.08.024

[10]   Lee, K.L., Hung, C.Y. and Pan, W.F. (2010) Variation of Ovalization for Sharp-Notched Circular Tubes under Cyclic Bending. Journal of Mechanics, 26, 403-411. http://dx.doi.org/ 10.1017/S1727719100003968

[11]   Lee, K.L. (2010) Mechanical Behavior and Buckling Failure of Sharp-Notched Circular Tubes under Cyclic Bending. Structural Engineering and Mechanics, 34, 367-376. http://dx.doi.org/ 10.12989/sem.2010.34.3.367

[12]   Lee, K.L., Hsu, C.M. and Pan, W.F. (2013) Viscoplastic Collapse of Sharp-Notched Circular Tubes under Cyclic Bending. Acta Mechanics Solida Sinica, 26, 629-641. http://dx.doi.org/10.1016/S0894-9166(14)60007-0

 
 
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