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Finite Element Analysis of Surface Cracks by the Supercomputer

  • T. Miyoshi
  • M. Shiratori
  • Y. Yoshida

Summary

A three dimensional finite element code, FEM3D, for a supercomputer has been developed to analyze the elastic-plastic problems of three dimensional surface cracks. In FEM3D, 20 and 15 noded isoparametric solid elements are utilized and the solver of the simultaneous linear equations is the skyline method.

In the elastic analysis of a surface cracked plate, in which the total degrees of freedom were about 3000, the computing time by the FEM3D through the supercomputer was about one twenty-fifth of that by the conventional main frame. The elastic-plastic analysis of a surface cracked plate was carried out and the J-integral along the leading edge of the crack was obtained.

It has been shown that the FEM3D is an effective tool for the analysis of three dimensional elastic-plastic problems.

Keywords

Stress Intensity Factor Surface Crack Computational Speed Vector Processing Tensile Yield Stress 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Marcal, P.V.; King, I.P.: Elastic-plastic analysis of two- dimensional stress systems by the finite element method. Int. J. Mech. Sci. 9 (1967) 143–155.CrossRefGoogle Scholar
  2. 2.
    Parks, D.M.: Virtual crack extension - a general finite element technique for J-integral evaluation. Luxmoore, A.R.; Owen, D.R.J, (eds.) Numerical methods in fracture mechanics. Proceedings of the first international conference held at university college, Swansea, U.K. January (1978) 464–478.Google Scholar
  3. 3.
    Barsoum, R.S.: Triangular quarter-point elements as elastic and perfectly-plastic crack tip elements. Int. J. Num. Meth. Eng. 11 (1977) 85–98.MATHCrossRefGoogle Scholar
  4. 4.
    Newman, J.C., Jr.; Raju, I.S.: An empirical stress intensity factor equation for the surface crack. Eng. Fract. Mech. 15 (1981) 185–192.CrossRefGoogle Scholar
  5. 5.
    Miyoshi, T.; et al.: Analysis of J-integral and crack growth for surface cracks by line spring method. Paper presented at the 1984 ASME PVP conference at San Antonio. June (1984) 84-PVP-94. to be published in Transactions of the ASME J. Press. Vessel Technol.Google Scholar

Copyright information

© Springer Japan 1986

Authors and Affiliations

  • T. Miyoshi
    • 1
  • M. Shiratori
    • 2
  • Y. Yoshida
    • 1
  1. 1.Faculty of EngineeringUniversity of TokyoHongo, Bunkyo-ku, Tokyo, 113Japan
  2. 2.Faculty of EngineeringYokohama National UniversityYokohama, 240Japan

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