Abstract
The large deflections of rigid-plastic circular plates are analyzed by making use of the generalized yield line method which takes into account the changes in geometry of the structures. The circular plates are assumed to deform into a number of right circular cones separated by concentric hinge circles with no radial strains in each cone. Then, the general equation to obtain the load-deflection relations is derived from the principle of virtual velocity.Simply supported circular plates under circular loading are investigated, the boundary of which is either restrained against inward movement or free to move inward. The results are compared with those obtained by other researchers. The method to account for the elastic deformations is discussed.
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