Fracture Analysis of Medium Density Polyethylene

Conference paper

Abstract

The paper deals with the application of the reference stress method (RSM) to estimate the J and C integrals of cracked thick-walled metal as well as medium density polyethylene (MDPE) pipes. Unlike the existing solutions, the newly developed analytical approximations of the plastic limit pressure and J-integral are applicable to a wide range of crack dimensions. Based on the experimental data from literature and analogy between plasticity and creep, the paper discusses a method used to develop the efficient computational strategy for modeling creep fracture mechanisms by slow crack growth in a MDPE pipes.

Keywords

Finite element analysis Polyethylene Creep C*-integral 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Lu X. and Brown N., 1990. The transition from ductile to slow crack growth failure in a copolymer of polyethylene. Journal of Materials Science 25 411–416.CrossRefADSGoogle Scholar
  2. 2.
    Krempl E. and Kahn F., 2003. Rate (time)-dependent deformation behavior: an overview of some properties of metals and solid polymers. International Journal of Plasticity 19, 7, 1069–1095.CrossRefGoogle Scholar
  3. 3.
    Kim Y.-J., Kim J.-S., Huh N.-S. and Kim Y.-J., 2002. Engineering C-integral estimates for generalised creep behaviour and finite element validation. International Journal of Pressure Vessels and Piping 79, 427–443.CrossRefGoogle Scholar
  4. 4.
    Kim Y.-J., Kim J.-S., Park Y.-J. and Kim Y.-J., 2004. Elastic-plastic fracture mechanics method for finite internal axial surface cracks in cylinders. Engineering Fracture Mechanics 71, 925–944.CrossRefGoogle Scholar
  5. 5.
    Kim Y.-J., Shim D.-J., Nikbin K., Kim Y.-J., Hwang S.-S. and Kim J.-S., 2003 Finite element based plastic limit loads for cylinders with part-through surface cracks under combined loading. International Journal of Pressure Vessels and Piping 80, 527–540.CrossRefGoogle Scholar
  6. 6.
    Hamouda H.B.H., Laiarinandrasana L. and Piques R., 2007. Fracture mechanics global approach concepts applied to creep slow crack growth in a medium density polyethylene (MDPE). Engineering Fracture Mechanics 74, 2187–2204.CrossRefGoogle Scholar
  7. 7.
    Hamouda H.B.H., Laiarinandrasana L. and Piques R., 2007. Viscoplastic behaviour of a medium density polyethylene (MDPE): Constitutive equations based on double nonlinear deformation model. International Journal of Plasticity 23, 1307–1327.MATHCrossRefGoogle Scholar
  8. 8.
    ABAQUS/Standard, 2006. User’s guide and theoretical manual, Version 6.6, Hibbitt, Karlsson & Serensen.Google Scholar
  9. 9.
    Raju I.S. and Newman J.C., 1982. Stress-intensity factors for internal and external surface cracks in cylindrical vessels. Journal of Pressure Vessel Technology 104, 293–298.CrossRefGoogle Scholar
  10. 10.
    Ainsworth R.A., 1984. The assessment of defects in structures of strain hardening material. Engineering Fracture Mechanics 19, 633–642.CrossRefGoogle Scholar
  11. 11.
    Tonković Z., Skozrit I. and Alfirević J., 2008. Influence of flow stress choice on the plastic collapse estimation of axially cracked steam generator tubes. Nuclear Engineering and Design 238, 1762–1770, doi:10.1016/j.nucengdes.2008.01.008CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V 2009

Authors and Affiliations

  1. 1.Faculty of Mechanical Engineering and Naval ArchitectureUniversity of ZagrebZagrebCroatia

Personalised recommendations