Optimal design of multi-purpose beam-columns |
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| Authors: | B. L. Karihaloo R. D. Parbery |
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| Affiliation: | (1) Department of Civil Engineering, The University of Newcastle, New South Wales, Australia;(2) Department of Mechanical Engineering, The University of Newcastle, New South Wales, Australia |
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| Abstract: | The paper deals with the optimal design of an elastic pinended member of given volume that is to serve as a beam for a part of its design life and as a column for the rest. The optimal design can be interpreted in two ways. Firstly, it is the design that has the maximum Euler buckling load in column action, subject to a prescribed maximum deflection as a beam. Secondly, it is the design that has the least deflection as a beam under a midspan concentrated load, subject to a minimum permissible Euler buckling load in column action. The effectiveness of the optimal design is judged by comparing it with a prismatic bar of the same volume. |
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| Keywords: | Optimal design multi-purpose beam-columns beams columns design constraints structural optimization |
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