On the finite element calculation of stress distributions in arches

Summary In previous papers the properties of a number of cylindrical shell finite elements have been investigated by applying them to circular line arches. More recent work has shown the need for a more detailed study of the accuracy with which stress distributions (as opposed to displacements) can be calculated. Such a study is described in the present paper. The most convenient element of those tested, able to calculate stresses accurately in arches of all proportions, is found to be the strain element , introduced by earlier research and previously shown to be superior to all those tested when used for calculating displacements and natural frequencies. It is suggested that a similar conclusion may apply to the corresponding cylindrical shell element.