R. Mesnil, C. Douthe, O. Baverel,  T. Gobin


This article proposes a new computational method for the form-finding of nexorades, also called reciprocal frames by some authors. The method is based on the translations of the members forming the initial layout. It is shown that the two geometrical quantities defining nexorades – eccentricity and engagement length – depend linearly on the transformation parameters. The method is thus based on linear algebra, so that fitting problems can be formulated as quadratic optimisation problems under linear constraints. The proposed method is therefore fast, simple to implement, robust and can be applied to various grid patterns.

Furthemore, the proposed framework preserves planar facets. This paper proposes thus a new structural system where the nexorade is braced by planar facets. The feasibility of this structural system and of the computational framework introduced in this article is demonstrated by the fabrication of a 50m² timber pavilion.




Automation in Construction


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