Structural Engineering and Mechanics

  • 제11권3호
  • /
  • Pages.315-324
  • /
  • 2001
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Viscoplastic collapse of titanium alloy tubes under cyclic bending

  • Lee, Kuo-Long (Department of Mechanical Engineering, Far East College) ;
  • Pan, Wen-Fung (Department of Engineering Science, National Cheng Kung University)
  • 발행 : 2001.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents the experimetal result on the viscoplastic response and collapse of the titanium alloy tubes subjected to cyclic bending. Based on the capacity of the bending machine, three different curvature-rates were used to highlight the viscoplastic behavior of the titanium alloy tubes. The Curvature-controlled experiments were conducted by the curvature-ovalization measurement apparatus which was designed by Pan et al. (1998). It can be observed from experimental data that the higher the applied curvature-rate, the greater is the degree of hardening of titanium alloy tube. However, the higher the applied curvature-rate, the greater is the degree of ovalization of tube cross-section. Furthermore, due to the greater degree of the ovalization of tube cross-section for higher curvature-rates under cyclic bending, the number of cycles to produce buckling is correspondingly reduced. Finally, the theoretical formulation, proposed by Pan and Her (1998), was modified so that it can be used for simulating the relationship between the controlled curvature and the number of cycles to produce buckling for titanium alloy tubes under cyclic bending with different curvature-rates. The theoretical simulation was compared with the experimental test data. Good agreement between the experimental and theoretical results has been achieved.

키워드

과제정보

연구 과제 주관 기관 : National Science Council

참고문헌

  1. Corona, E. and Kyriakides, S. (1988). "On the collapse of inelastic tubes under combined bending and pressure", Int. J. Solids Struct., 24(5), 505-553. https://doi.org/10.1016/0020-7683(88)90005-4
  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 Struct., 12, 229-263. https://doi.org/10.1016/0263-8231(91)90048-N
  3. Ikegami, K. and Ni-Itsu, Y. (1983), "Experimental evaluation of the interaction effect between plastic and creep deformation", Plasticity Today Symposium, Udine, Italy, June, 27-30.
  4. Krempl, E. (1979), "An experimental study of room-temperature rate-sensitivity, creep and relaxation of AISI type 304 stainless steel", J. Mech. Phy. Solids, 27, 363-375. https://doi.org/10.1016/0022-5096(79)90020-6
  5. Kujawski, D. and Krempl, E. (1981), "The rate(time)-dependent behavior of Ti-7Al-2Cb-1Ta titanium alloy at room temperature under quasi-static monotonic and cyclic loading", ASME J. Appl. Mech., 48, 55-63. https://doi.org/10.1115/1.3157592
  6. Kyriakides, S. and Ju, G.T. (1992a), "Bifurcation and localization instabilities in cylindrical shells under bending. I: Experiments", Int. J. Solids Struct., 29(9), 1117-1142. https://doi.org/10.1016/0020-7683(92)90139-K
  7. Kyriakides, S. and Ju. G.T. (1992b), "Bifurcation and localization instabilities in cylindrical shells under bending. II: Prediction", Int. J. Solids Struct., 29(9), 1143-1171. https://doi.org/10.1016/0020-7683(92)90140-O
  8. Kyriakies, S. and Shaw, P.K. (1982), "Response and stability of elastoplastic circular pipes under combined bending and external pressure", Int. J. Solids Struct., 18(11) 957-973. https://doi.org/10.1016/0020-7683(82)90086-5
  9. Kyriakides, S. and Shaw, P.K. (1987), "Inelastic buckling of tubes under cyclic loads", ASME J. Press. Vessel Technol., 109, 169-178. https://doi.org/10.1115/1.3264891
  10. Pan, W.F. and Chern, C.H. (1997), "Endochronic description for viscoplastic behavior of materials under multiaxial loading", Int. J. Solids Struct., 34(17), 2131-2160. https://doi.org/10.1016/S0020-7683(96)00118-7
  11. Pan, W.F. and Fan, C.H. (1998), "An experimental study on the effect of curvature-rate at preloading stage on subsequent creep or relaxation of thin-walled tubes under pure bending", JSME Int. Journal, Series A, 41(4), 525-531.
  12. Pan, W.F. and Her, Y.S. (1998), "Viscoplastic collapse of thin-walled tubes under cyclic bending", ASME J. Engng. Mat. Technol., 120, 287-290. https://doi.org/10.1115/1.2807015
  13. Pan, W.F. and Hsu, C.M. (1999), "Viscoplastic analysis of thin-walled tubes under cyclic bending", Int. J. Struct. Engng. Mech., 7(5), 457-471. https://doi.org/10.12989/sem.1999.7.5.457
  14. Pan, W.F. and Leu, K.T. (1997), "Endochronic analysis for viscoplastic collapse of a thin-walled tube under combined bending and external pressure", JSME Int. Journal, Series A. 40(2), 189-199.
  15. Pan, W.F., Wang, T.R. and Hsu, C.M. (1998), "A curvature-ovalization measurement apparatus for circular tubes under cyclic bending", Experimental Mechanics, 38(2), 99-102. https://doi.org/10.1007/BF02321651
  16. Shaw, P.K. and Kyriakides, S. (1985), "Inelastic analysis of thin-walled tubes under cyclic bending", Int. J. Solids Struct., 21(11), 1073-1100. https://doi.org/10.1016/0020-7683(85)90044-7

피인용 문헌

  1. Viscoplastic collapse of sharp-notched circular tubes under cyclic bending vol.26, pp.6, 2013, https://doi.org/10.1016/S0894-9166(14)60007-0
  2. Experimental and Theoretical Investigation of the Response and Collapse of 316L Stainless Steel Tubes Subjected to Cyclic Bending vol.48, pp.3, 2005, https://doi.org/10.1299/jsmea.48.155
  3. Experimental and Theoretical Evaluations of the Effect between Diameter-to-Thickness Ratio and Curvature-Rate on the Stability of Circular Tubes under Cyclic Bending vol.47, pp.2, 2004, https://doi.org/10.1299/jsmea.47.212
  4. Mean moment effect on circular thin-walled tubes under cyclic bending vol.28, pp.5, 2008, https://doi.org/10.12989/sem.2008.28.5.495
  5. On the response of dented stainless-steel pipes subject to cyclic bending moments and its prediction vol.99, 2016, https://doi.org/10.1016/j.tws.2015.10.017
  6. Endochronic simulation for viscoplastic collapse of long, thick-walled tubes subjected to external pressure and axial tension vol.18, pp.5, 2004, https://doi.org/10.12989/sem.2004.18.5.627
  7. Viscoplastic response and collapse of 316L stainless steel tubes under cyclic bending vol.5, pp.5, 2005, https://doi.org/10.12989/scs.2005.5.5.359
  8. Buckling life estimation of circular tubes of different materials under cyclic bending vol.33, pp.2, 2010, https://doi.org/10.1080/02533839.2010.9671609
  9. Pure bending creep of SUS 304 stainless steel tubes vol.2, pp.6, 2001, https://doi.org/10.12989/scs.2002.2.6.461
  10. Endochronic simulation for the response of 1020 carbon steel tubes under symmetric and unsymmetric cyclic bending with or without external pressure vol.8, pp.2, 2001, https://doi.org/10.12989/scs.2008.8.2.099
  11. Mean curvature effect on the response and failure of round-hole tubes submitted to cyclic bending vol.13, pp.11, 2021, https://doi.org/10.1177/16878140211062273