A Review of Woven Structures with Focus on Reciprocal Systems - Nexorades

Baverel, Olivier; Larsen, Olga Popovic

doi:10.1260/0266-3511.26.4.281

Cited by 14 publications

(6 citation statements)

References 6 publications

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“…Nexorades, also known as reciprocal frames [1,2], are constituted of load-bearing members, which support each other along their span and not their extremities [3]. Their arrangement simplifies the construction of connection details, since only two members meet instead of four in quadrangular structures, or six in triangulated structures.…”

Section: Motivationmentioning

confidence: 99%

Form finding of nexorades using the translations method

Mesnil

Douthe

Baverel

et al. 2018

Automation in Construction

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This article proposes a new computational method for the form-finding of nexorades, also called reciprocal frames in the literature. The method is based on the translations of 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 introduced in this article is thus based on linear algebra, so that fitting problems can be formulated as simple 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 50m 2 timber pavilion.

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Section: Motivationmentioning

confidence: 99%

Form finding of nexorades using the translations method

Mesnil

Douthe

Baverel

et al. 2018

Automation in Construction

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“…However, because of the weak strength and rigidity of these two methods, the strength and rigidity of reciprocal frame are greatly reduced at the same time [14][15]. In 1976, Bijnen published the first patent concerning with reciprocal frame's connector Bolted Connectors [16]. He suggested to loop steel pipes via threaded pins to form a closed-circuit structure.…”

Section: Fig 1 -A Circular Reciprocal Frame Fig2 -Model Of Chinese Laminated Beam Bridgementioning

confidence: 99%

Study on Adjustable Connector of Reciprocal Frame

Hui

et al. 2021

CEJ

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In this paper, we design an adjustable connector of reciprocal frame, and a three-dimensional solid model of this connector with Circular Hollow Section has been created in the FEM software Abaqus CAE to study its mechanical properties. When the plastic hinge is formed at the end of the Circular Hollow Section, the connector is still in an elastic state. It is concluded that the adjustable connector of reciprocal frame has high strength and rigidity, realizing the goal for designing higher connector strength over Circular Hollow Section strength. Then parametric analysis is used to analyse the influence of the connector about each part on the mechanical properties, and the flexural rigidity of the connector has been derived. A three-dimensional wire model of reciprocal frames has been created in the FEM software Abaqus CAE, and a full-scale test model of the structure is designed. The numerical simulation results agree well with the test results. It is verified that the reliability of the modeling method and the accuracy of the connector mechanical model.

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“…Such a basic configuration has been developed with elongated elements and is generally called 'fan' or 'nexor'. It can be assembled with other similar systems in order to generate more complicated structures (Baverel et al 2000;Baverel and Popovic Larsen 2011;Douthe and Baverel 2009;Sénéchal et al 2011).…”

Section: Reciprocal Systems Based On Elongated Elementsmentioning

confidence: 99%

Reciprocal Systems Based on Planar Elements: Morphology and Design Explorations

Baverel¹,

Pugnale²

2014

Nexus Netw J

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The concept of transferring forces in a reciprocal way has always been related to the use of timber beams, that is, elongated elements. However, planar components can also be considered; circular tiles, squares, triangles and more articulated or irregular geometrical shapes are all valid alternatives. This report proposes an initial exploration of reciprocal systems based on planar elements in order to guide further morphological studies. It also presents some prototypes, which were developed by the students of the É cole des Ponts in Paris during two design workshops run in 2012 and 2013.

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A Review of Woven Structures with Focus on Reciprocal Systems - Nexorades

Cited by 14 publications

References 6 publications

Form finding of nexorades using the translations method

Form finding of nexorades using the translations method

Study on Adjustable Connector of Reciprocal Frame

Reciprocal Systems Based on Planar Elements: Morphology and Design Explorations

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