Author: Pritchard, B P
First published: N/A
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Pritchard, B P
The purpose of this short paper is to describe in a simple way the operation of the finite element method and to indicate the principles involved. This has been approached by a description of the general processes of structural analysis by the stiffness method using simple matrices when their use is advantageous. The finite element method is presented as an approximation in which a continuum is replaced by a number of discrete elements and an indication is given as to bow the engineer can satisfy himself as to the accuracy of his results. It has not been possible to discuss the suitability of types of elements for particular purposes but details of some of the commonly used elements with appropriate references and comments have been given. Reference has also been made to the use of computers infinite element applications.
O.C. Zienkiewicz, D.M. Brotton and L. Morgan
The paper provides the designer of precast concrete buildings with a valuable design aid. To enable general design rules to be established within the context of current design practice it would be of great assistance if the authors could offer some
advice concerning the following:
Introduction by Dr. Taylor: Four years ago, to this month, a paper of which I was a joint author (with Dr. Somerville) entitled 'The influence of detailing on the strength of reinforced concrete structures' was presented to this Institution. At the close of that paper, Mr. Geddes, then President, suggested that the Institution would like to hear more of our continuing research on detailing. Although this paper treats some more detailing problems in much the same way as before (and in one case presents more information on a subject discussed before) our approach to detailing problems has been extended. The basic message from our previous paper was that the normal Code rules for detailing (bond, bearing etc.) are not necessarily sufficient when considering the detailing of critical parts of concrete structures, in particular at intersections between elements. In the cases mentioned in the last paper it was suggested that, providing internal statically determinate truss systems could be envisaged and steel was provided to carry the tension, with concrete carrying the compression, the resulting details would have a good chance of working safely.