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The conjugate frame analogy is extended to the treatment of continuous space frames. Fundamental relationships between the actual structure and the conjugate structure are derived for a general case, and then specialized for frames with straight members of constant cross-section. The latter are used for the derivation of simultaneous equations which, in conjunction with the static equilibrium conditions, yield the redundant quantities.
J. KIUSALAAS, S.L. LEE, and M. MAKINO
The paper describes a numerical forward integration method of analysis applicable to any curved member subject to loading normal to its plane of curvature. The development of the method is shown and the results of its application given to two problems of known solution, with a discussion of the errors and convergence of results.
PHILIP T. A. DONALD and WILLIAM G. GODDEN
A simple technique for writing the elastic equations for rectangular grids, based on the equation of virtual work, is presented.