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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 7/8
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON THE DESIGN AND CONSTRUCTION OF NON-CONVENTIONAL STRUCTURES Edited by: B.H.V. Topping
Paper XII.2
Strategies for Formfinding and Design of Cutting Patterns for Large Sensitive Membrane Structures K. Linkwitz, L. Grundig, J. Bahndorf, M. Neureither and D. Strobel
Institute for Applications of Geodesy, University of Stuttgart, Germany K. Linkwitz, L. Grundig, J. Bahndorf, M. Neureither, D. Strobel, "Strategies for Formfinding and Design of Cutting Patterns for Large Sensitive Membrane Structures", in B.H.V. Topping, (Editor), "Proceedings of the International Conference on the Design and Construction of Non-Conventional Structures", Civil-Comp Press, Edinburgh, UK, pp 315-321, 1987. doi:10.4203/ccp.7.12.2
Abstract
A strategy of formfinding based on the method of force-densities, originally developed for cable net structures, proves to be a useful tool also for membrane structures. The mathematical model for calculating the figure of equilibrium of a membrane with an orthogonal arrangement of warp and weft may be formulated by the model of a cable network. The cutting pattern representation however is different from that of cable nets. In this report a strategy based on geodesic lines is described which is capable of properly modelling even extremely sensitive membrane structures, i.e. those based on Kevlar fabric with a very high stiffness. The application of the strategies for both the formfinding and the cutting pattern calculation is shown with respect to the Montreal Olympic Stadium Roof.
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