Abstract
ABSTRACT Large deformations of rigid-plastic polygonal plates are analyzed by making use of the generalized yield line method which takes into account the changes in geometry. The plates are assumed to deform into a number of rigid regions separated by straight-line plastic hinges. Then the general equation to obtain the load-deflection relation is derived by the principle of virtual velocity. Simply supported or clamped regular polygonal plates are investigated, the sides of which are either restrained against inward movement or free to move inward. The influence of rotational and in-plane boundary conditions on the behavior of the plate is clarified. The method to account for the elastic deformations is discussed.
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