INVESTIGATION OF STIFFENED STEEL PLATES.
SOUTHWEST RESEARCH INST SAN ANTONIO TEX
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The report covers the results of uniform pressure tests on six steel plates stiffened by beams. The stiffened plates were loaded in steps into the plastic range. Simple formulas are devised to describe the behavior of the system. A detailed study of the strain and stress distributions obtained experimentally resulted in the following major conclusions By purely theoretical analysis, it is not possible to obtain a detailed picture of the stress distribution in the stiffeners and the plate. A good estimate of the collapse pressure and deflections of the stiffeners may still be obtained by using equations. The stiffened plate of the proportions tested behaves very much like a fixed-ended beam made up of a stiffener section plus an effective width of plate equal to the spacing between stiffeners, carrying a load per unit length equal to the applied pressure times the effective width, with certain modifications. The weakest part of the plate stiffener combination is the stiffener. The stiffener forms a hinge at the supports and at the centerline while by far the greater portion of the plate itself is within the elastic range. The permanent set or residual deflection is greatly affected by welding distortion and is dependent on the size of plating used. Author
- Structural Engineering and Building Technology