Graphic statics using discontinuous Airy stress functions
Journal article, 2016

It is known that the equilibrium of two-dimensional trusses can be represented using Maxwell reciprocal diagrams and polyhedral Airy stress functions, with the change in slope of the stress function corresponding to a tension force. This article generalises the analysis to include two-dimensional frames, showing how a discontinuity in the value of the Airy stress function corresponds to a bending moment.


A. McRobie

University of Cambridge

Christopher John Kenneth Williams

University of Bath

International Journal of Space Structures

0956-0599 (ISSN) 20598033 (eISSN)

Vol. 31 2-4 121-134

Subject Categories

Architectural Engineering




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