APPROXIMATE SOLUTION OF K VALUE FOR A SURFACE CRACK DUE TO TWO DIMENSIONAL PROBLEM BY SERIES SPRINGS MODEL

The cross section of a surface crack at the centre of a crack is a single edge cracked plate. Crack opening displacement of a surface crack at the centre can be modified to a single edge crack with springs of which the gauge length is zero and which correspond to the centre cracked plated. The centre cracked plate can be represented by series springs for cracked part and solid part. From the above relations, an analytical calculation was made of the crack opening displacement which may correspond to that for a surface crack by using the reciprocal principle. The K value at the deepest point of a surface crack can be obtained by suing the solution of working stress in series springs. The K value was calculated by a series springs model for a semi-elliptical surface crack with various crack sizes in a plate subjected to tension or bending loading. These results are in good agreement with published K values.

  • Supplemental Notes:
    • J Soc Naval Arch Japan, v 178, Dec 1995, p 535 [9 p, 9 ref, 14 fig]
  • Authors:
    • Toyosada, M
    • Niwa, T
  • Publication Date: 1995

Language

  • Japanese

Subject/Index Terms

Filing Info

  • Accession Number: 00728308
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 4 1996 12:00AM