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Arbitrary Quadrilateral Spar Webs for the Matrix Displacement Method

Published online by Cambridge University Press:  04 July 2016

J. H. Argyris,
J. H. Argyris, *
Affiliation:
Imperial College of Science and Technology, University of London Institut für Statik und Dynamik der Luft-und Raumfahrtkonstruktionen, Stuttgart
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Extract

Ever since the realisation of the matrix Displacement Method, the introduction of a kinematically satisfactory spar element has remained a difficult and, as yet, not fully resolved problem. Two cardinal points have to be considered in establishing a suitable spar model: first, it must reproduce adequately both shearing and bending deformations, and second, it must satisfy everywhere the kinematic compatibility conditions, especially at the junction with the wing cover. Of course, if we were to restrict ourselves to a uniform rectangular element, the corresponding theory could be written down in a few lines. However, from the practical point of view, it is essential to take account, ab initio, of taper, and this necessitates some subtle considerations, especially if we have to allow for asymmetrical taper, as becomes indispensable with some modern flying vehicles.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 70 , Issue 662 , February 1966 , pp. 359 - 362
Copyright
Copyright © Royal Aeronautical Society 1966

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References

1.Argyris, J. H. The Computer Shapes the Theory. Lecture to the Royal Aeronautical Society, 18th May 1965. To be published in the Journal of the Royal Aeronautical Society.Google Scholar
2.Argyris, J. H.Recent Advances in Matrix Methods of Structural Analysis.Progress in Aeronautical Sciences, Vol. 4. Pergamon Press, Oxford, London, New York, Paris, 1963.Google Scholar
3.Argyris, J. H.Triangular Elements with Linearly Varying Strain. Technical note 2, Journal of the Royal Aero nautical Society, Vol. 69, October 1965.Google Scholar
4.Argyris, J. H.Reinforced Fields of Triangular Elements with Linearly Varying Strain: Effect of Initial Strains. Technical note 3, Journal of the Royal Aeronautical Society, Vol. 69, November 1965.CrossRefGoogle Scholar
5.Argyris, J. H. A New Approach to the Stiffness Analysis of Arbitrary Quadrilateral Spar Webs. Research Report to the Boeing Company, Airplane Division, August 1964.Google Scholar