Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Simulation-based fatigue life assessment of a mercantile vessel

  • Ertas, Ahmet H. (Department of Biomedical Engineering, Karabuk University) ;
  • Yilmaz, Ahmet F. (Department of Naval Architecture, Bartin University)
  • Received : 2013.11.20
  • Accepted : 2014.04.24
  • Published : 2014.06.25
⟨ Previous Next ⟩

Abstract

Despite the availability of other transport methods such as land and air transportations, marine transportation is the most preferred and widely used transportation method in the world because of its economical advantages. In service, ships experience cyclic loading. Hence, it can be said that fatigue fracture, which occurs due to cyclic loading, is one of the most critical failure modes for vessels. Accordingly, this makes fatigue failure prevention an important design requirement in naval architecture. In general, a ship structure contains many structural components. Because of this, structural modeling typically relies on Finite Element Analysis (FEA) techniques. It is possible to increase fatigue performance of the ship structures by using FEA in computer aided engineering environment. Even if literature papers as well as rules of classification societies are available to assess effect of fatigue cracks onto the whole ship structure, analytical studies are relatively scarce because of the difficulties of modeling the whole structure and obtaining reliable fatigue life predictions. As a consequence, the objective of this study is to improve fatigue strength of a mercantile vessel against fatigue loads via analytical method. For this purpose, the fatigue life of the mercantile vessel has been investigated. Two different type of fatigue assessment models, namely Coffin-Manson and Morrow Mean stress approaches, were used and the results were compared. In order to accurately determine the fatigue life of the ship, a nonlinear finite element analysis was conducted considering plastic deformations and residual stresses. The results of this study will provide the designer with some guidelines in designing mercantile vessels.

Keywords

References

  1. ANSYS (2013), ANSYS Documentation, v.14, UK.
  2. Basquin, O.H. (1910), "The exponential law of endurance tests", Proc. ASTM, 10, 625-630.
  3. Cramer, E.H., Loseth, R. and Olaisen, K. (1995), "Fatigue assessment of ship structures", Mar. Struct., 8, 359-383. https://doi.org/10.1016/0951-8339(94)00026-O
  4. Cui, W.C. (2002), "A state of the art review on fatigue life prediction methods for metal structures", J. Mar. Sci. Technol., 70(1), 43-56.
  5. Donahue, R.J., Clark, H.M. and Atanmo, P. (1972), "Crack opening displacement and the rate of fatigue crack growth", Int. J. Fract. Mech., 8, 209-219. https://doi.org/10.1007/BF00703882
  6. Ertas, A.H. (2004), "Fatigue behavior of spot welds", M.Sc. Thesis, Bogazici University, Istanbul.
  7. Ertas, A.H., Alkan V. and Yilmaz A.F. (2014), "Finite element simulation of a mercantile vessel shipboard under working conditions", Procedia Eng., 69, 1001-1007. https://doi.org/10.1016/j.proeng.2014.03.082
  8. Ertas A.H., Vardar O., Sonmez F.O. and Solim Z. (2009), "Measurement and assessment of fatigue life of spot-weld joints", J. Eng. Mater-T ASME, 131, Article Number: 011011.
  9. Fatemi, A. and Yang, L. (1998), "Cumulative fatigue damage and life prediction theories: a survey of the state of the art for homogeneous materials", Int. J. Fatigue, 20, 9-34. https://doi.org/10.1016/S0142-1123(97)00081-9
  10. Foreman, R.G., Kearney, V.E. and Engle, R.M. (1967), "Numerical analysis of crack propagation in cyclicloaded structures", J. Basic Eng., 89, 459-464. https://doi.org/10.1115/1.3609637
  11. Fricke, W. and Paetzold, H. (2010), "Full-scale fatigue tests of ship structures to validate the S-N approaches for fatigue strength assessment", Mar. Struct., 23(1), 115-130. https://doi.org/10.1016/j.marstruc.2010.01.004
  12. Fricke, W., von Lilienfeld-Toal, W. and Paetzold, H. (2012a), "Fatigue strength investigations of welded details of stiffened plate structures in steel ships", Int. J. Fatigue, 34(1), 17-26. https://doi.org/10.1016/j.ijfatigue.2011.01.021
  13. Fricke, W., Zacke, S., Kocak, M. and Eren, S.E. (2012b), "Fatigue and fracture strength of ship block joints welded with large gaps", Weld. World, 56(3-4), 30-39.
  14. Hobbacher, A. (2008), Recommendations for fatigue design of welded joints and components, International Institute of Welding.
  15. Kim, M.H., Kim, S.M., Kim, Y.N., Kim, S.G., Lee, K.E. and Kim, G.R. (2009), "A comparative study for the fatigue assessment of a ship structure by use of hot spot stress and structural stress approaches", Ocean Eng., 36(14), 1067-1072. https://doi.org/10.1016/j.oceaneng.2009.07.001
  16. Kim, D.K., Park, D.K., Seo, J.K., Paik, J.K. and Kim, B.J. (2012), "Effects of low temperature on mechanical properties of steel and ultimate hull girder strength of commercial ship", Korean J. Met. Mater., 50(6), 427-432. https://doi.org/10.3365/KJMM.2012.50.6.427
  17. Kohout, J. and Vechet, S. (1999), "New functions for a description of fatigue curves and their advantages", Proceedings of the 7th International Fatigue Congress (Fatigue'99), Eds. Wu, X.R. and Wang, Z.G., Higher Education Press, Beijing.
  18. Kozak, J. and Gorski, Z. (2011), "Fatigue strength determination of ship structural joints Part I Analytical methods for determining fatigue strength of ship structures", Pol. Marit. Res., 18(2), 28-36.
  19. McEvily, A.J. and Groeger, J. (1977), "On the threshold for fatigue-crack growth", Proceedings of the 4th International Conference on Fracture, 2, University of Waterloo Press, Waterloo, Canada.
  20. Navarro, A. and De los Rios, E.R. (1988), "A microstructurally short fatigue crack growth equation", Fatig. Fract. Eng. Mater. Struct., 11, 383-396. https://doi.org/10.1111/j.1460-2695.1988.tb01391.x
  21. Okawa, T. and Sumi, Y. (2008), "A computational approach for fatigue crack propagation in ship structures under random sequence of clustered loading", J. Mar. Sci. Tech-Japan, 13(4), 416-427. https://doi.org/10.1007/s00773-008-0014-5
  22. Ong, J.H. (1993), "An evaluation of existing methods for the prediction of axial fatigue life from tensile data", Int. J. Fatigue, 15(1), 13-19. https://doi.org/10.1016/0142-1123(93)90071-W
  23. Paik, J.K. and Melchers, R.E. (2008), Condition assessment of aged structures, Woodhead Publishing in Mechanical Engineering, CRC Press, USA.
  24. Pan, N. (2000), "Fatigue life study of spot welds", Ph.D. Dissertation, Stanford University, San Francisco.
  25. Paris, P.C. and Erdogan, F. (1963), "A critical analysis of crack propagation laws", J. Basic Eng., 85, 528-534. https://doi.org/10.1115/1.3656900
  26. Paris, P.C., Gomez, M.P. and Anderson, W.P. (1961), "A rational analytical theory of fatigue", Trend. Eng., 13, 9-14.
  27. Park, S.J. and Lee, H.W. (2012), "A study on the fatigue strength characteristics of ship structural steel with gusset welds", Int. J. Nav. Arch. Ocean Eng., 4, 132-140. https://doi.org/10.3744/JNAOE.2012.4.2.132
  28. Peeker, E. and Niemi, E. (1999), "Fatigue crack propagation model based on a local strain approach", J. Constr. Steel Res., 49(2), 139-155. https://doi.org/10.1016/S0143-974X(98)00213-2
  29. Roessle, M.L. and Fatemi, A. (2000), "Strain-controlled fatigue properties of steels and some simple approximations", Int. J. Fatigue, 22(6), 495-511. https://doi.org/10.1016/S0142-1123(00)00026-8
  30. Rizzo, C.M. and Tedeschi, R.A. (2007), "Fatigue strength of a typical ship structural detail: tests and calculation methods", Fatig. Fract. Eng. M., 30(7), 653-663. https://doi.org/10.1111/j.1460-2695.2007.01147.x
  31. Socie, D.F. (1977), "Fatigue-life prediction using local stress strain concepts", Exp. Mech., 17(2), 50-56. https://doi.org/10.1007/BF02326426
  32. Stephens, R.I., Fatemi, A., Stephens, R.R. and Fuchs, H.O. (2001), Metal Fatigue in Engineering, Wiley-Interscience Publication, NewYork, NY, USA.
  33. Sumi, Y. (1998), "Fatigue crack propagation and computational remaining life assessment of ship structures", J. Mar. Sci. Technol., 3(2), 102-112. https://doi.org/10.1007/BF02492565
  34. Suresh, S. (2004), Fatigue of Materials, Cambridge University Press, Cambridge, UK.
  35. Suyuthi, A., Leira, B.J. and Riska, K. (2013), "Fatigue damage of ship hulls due to local ice-induced stresses", Appl. Ocean Res., 42, 87-104. https://doi.org/10.1016/j.apor.2013.05.003
  36. Turkish Lyod Rules (2013).
  37. White, G.J. and Ayyub, B.M. (1987), "Reliability-based fatigue design for ship structures", Nav. Eng. J., 99(3), 135-149.
  38. Wondseok, J., Bae D. and Sohn, I. (2004), "Fatigue design of various type spot welded lap joints using the maximum stress", KSME Int. J., 18(1), 106-113.
  39. Wu, Y.S., Cui, W.C. and Zhou, G.J. (2001), Practical Design of Ships and Other Floating Structures, Elsevier, Shanghai, September.
  40. Yang, L. and Fatemi, A. (1998), "Cumulative fatigue damage mechanisms and quantifying parameters: a literature review", J. Test Eval., 26(2), 89-100. https://doi.org/10.1520/JTE11978J
  41. Yilmaz, A.F. (2013), "Fatigue analysis of the ship structure made of Holland profiles", M.Sc. Thesis, Karabuk University, Karabuk, Turkey. (in Turkish)

Cited by

  1. On-board measurement methodology for the liquid-solid slurry production of deep-seabed mining vol.149, 2018, https://doi.org/10.1016/j.oceaneng.2017.12.016
  2. Concept of an advanced simulation-based design for engineering support of offshore plant equipment industries and its realization method vol.121, 2016, https://doi.org/10.1016/j.oceaneng.2016.05.028
  3. Rapid S-N type life estimation for low cycle fatigue of high-strength steels at a low ambient temperature vol.33, pp.6, 2014, https://doi.org/10.12989/scs.2019.33.6.777