Dual Analysis of a Multiweb Sweptback Wing Model

G. Sander (Laboratoire de Techniques Aeronautique et Spatiale, University of Liége)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Publication date: 1 February 1968


THE idea of a dual analysis in finite elements of a given structure was put forward in Ref. 4. The first analysis should be of the displacement type, using conforming displacement models of the finite elements. This results in a continuous, piecewise differcntiable displacement field in the whole structure, for which linear elasticity theory predicts lower bounds to the local static influence coefficients. The second analysis should be based on equilibrium models of the finite elements. The stress field within the structure is then continuously transmitted across the interfaces and satisfies detailed equilibrium conditions in the interior of each element. This property furnishes upper bounds to the influence coefficients.


Sander, G. (1968), "Dual Analysis of a Multiweb Sweptback Wing Model", Aircraft Engineering and Aerospace Technology, Vol. 40 No. 2, pp. 6-29. https://doi.org/10.1108/eb034343

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Copyright © 1968, MCB UP Limited

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