Abstract
The paper describes experiments carried out by Lloyd’s Register of Shipping for the British Shipbuilding Research Association on a number of welded and riveted box-shaped structures resembling the double bottom of a ship and which were subject to a compressive load in a testing machine in order to ascertain the behaviour of a panel of plating and to determine its load-carrying capacity. The effect of reinforcing a panel which had already sustained some permanent deformation by different types of intercostal stiffeners is also described. The initial form and deflexion and the stress set up in the material of the panel under compression are shown in the form of diagrams and the difference in the behaviour and the load carrying capacity of a riveted and welded panel discussed. The efficiency of some of the welded and riveted panels tested is determined and the results obtained compared with theoretical calculations. The effect of successive applications of load to a panel with initial deflexion is also shown.
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