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ELASTIC BUCKLING CALCULATIONS OF RECTANGULAR PLATES WITH CIRCULAR HOLES

In shipbuilding industry the buckling problem has grown dominant during the last years. The reason is especially the rapid increase in ship size together with the ambition to obtain minimum steel-weight and according to this, extended use of high tensile steel. Regarding the problems in this field, The Swedish Ship Research Foundation has carried out an investigation concerning elastic buckling of rectangular plates with circular holes. The investigation has to a great extent been experimental. At compressive loads the buckling strength will fall if the hole is small, however, if the size of the hole is increased, the buckling strength will also increase and sometimes even exceed the buckling strength of the unpierced plate. When the plate is loaded with shearforces the buckling strength decreases sweepingly also for holes of moderate size. One of the tests concerns shearforce loaded plates with cut-outs in the four corners. If the cut-outs have removed less than about 15 percent of the length of the edge, the buckling strength decreases only slightly. If the size of the cut-outs is increased over this value, the buckling strength radically decreases. As the aim of the investigation was to produce means of assistance for calculations the results are presented by some diagrams and the use of these is illustrated as a guide by two examples.

  • Corporate Authors:

    Swedish Ship Research Foundation

    Fack
    40270 Goteborg 8,   Sweden 
  • Authors:
    • Eftring, N
    • Sandberg, K
  • Publication Date: 1969

Media Info

  • Features: References;
  • Pagination: 22 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00028962
  • Record Type: Publication
  • Source Agency: Ship Structure Committee
  • Report/Paper Numbers: Rept No. 60
  • Files: TRIS
  • Created Date: Apr 28 1972 12:00AM