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The Validity of the Initial Strain Concept

Published online by Cambridge University Press:  04 July 2016

J. H. Argyris and
S. Kelsey
J. H. Argyris
Affiliation:
Department of Aeronautics, Imperial College of Science and Technology
S. Kelsey
Affiliation:
Department of Aeronautics, Imperial College of Science and Technology
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Extract

We must thank Dr. Grzedzielski for the clarification of his argument and notation contained in his second note. Unfortunately, this note only shows more clearly the fundamental misconceptions and errors in his arguments. Our own argument as to the generality and validity of the initial strain concept remains unaffected.

In our previous note, we were concerned to explain the initial strain concept, which Dr. Grzedzielski had criticised as “ an oversimplification not generally admissible “ both in the calculation of thermal stresses and as a device to simulate the effects of structural cut-outs and modifications. Here, we prove independently by a direct consideration of the compatibility conditions in the final structure, that the modified stress distribution given by our analysis is the correct one—regardless of the extent of the coupling in the flexibility matrix.

Information

Type
Technical Notes
Information
The Aeronautical Journal , Volume 65 , Issue 602 , February 1961, pp. 129 - 136
Copyright
Copyright © Royal Aeronautical Society 1961

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