Author(s)

M.E.M. El-Sayed & L. Jordan

Abstract

During the optimization process of frame structures the size of the beam members change. The stiffness of the joints where such members meet also change. In this paper a method for calculating the design sensitivities of these structural joints to changes in the size of the members, using a finite element formulation, is presented. The method uses the initial joint stiffness, as predicted from a more detailed shell finite elements model or experimental data, to calculate the design sensitivities for any number of joint members. The method is developed into a computer program that does not require a finite element model for the joint. The formulation of the method, and a test case are provided. 1 Introduction Literature pertaining to structural joints shows the importa

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