IMPACTS AND COLLISIONS OFFSHORE. PROGRESS REPORT NO. 10. IMPACT CAPACITY OF STEEL PLATFORMS AND TESTS ON LARGE DEFORMATIONS OF TUBES UNDER TRANSVERSE LOADING

The capacity of steel platforms subject to ship impacts is investigated. Various modes of energy absorption are identified. The local deformation of the cross-section of hit members of the supporting structure is analysed theoretically and compared with the results of experiments on small-scale tube models loaded laterally by a stiff beam indenter. The large-deflection beam behaviour of platform bracings and legs is studied and conditions for membrane tension forces to develop are discussed. The global response of a particular platform is analysed applying an elastic-dynamic computer program. The deformation properties of a supply vessel in sideways collisions are used. The investigations show that the impact energy will be absorbed by varying amounts in the different modes of deformation, depending on the collision situation.

  • Supplemental Notes:
    • Research performed by Det norske Veritas, Veritas Report 80-0036.
  • Corporate Authors:

    Selvigs Publishing A/S

    P.O. Box 9070 Vaterland, Christian Krohgs gt. 16
    Oslo 1,   Norway 
  • Authors:
    • Amdahl, J
  • Publication Date: 1980

Media Info

  • Pagination: p. 39
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00323297
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 6 1981 12:00AM