A NUMERICAL STUDY OF TRIPPING BEHAVIOUR OF STIFFENED PLATES

Authors
  1. Hu, S.Z.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
There are several sets of criteria in various ship design standards to exclude tripping as a possible failure mode. Tripping of stiffeners is considered to be an undesirable premature failure mode because of the reduction in the usable strength of a stiffened plate. The design criteria, either defining the maximum allowable distance between lateral supports in terms of span-to-flange width ratio, or requiring the calculated torsional buckling stress to be less than a certain stress level, give inconsistent margins of safety. This paper reviews tripping criteria in various standards. Linear buckling analysis and nonlinear load-displacement analysis using the finite element method were performed to investigate the efficacy of these criteria. Flat stiffened plates with different geometries, loadings and boundary conditions were analyzed. It is concluded that the current criteria may be inadequate for flat plates reinforced with standard Tee stiffeners.
Keywords
Stiffened plates
Date of publication
01 Jan 1991
Number of Pages
8
DSTKIM No
94-00161
CANDIS No
136309
Format(s):
Hardcopy;Originator's fiche received by DSIS

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