Two Way Deployable Spherical Grids

Escrig, F.; Sánchez, José Juan Alemán; Pérez-Valcárcel, Juan

doi:10.1177/026635119601-231

Cited by 27 publications

(11 citation statements)

References 4 publications

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“…25) In a modular Polar Pendentive 2-way structure each arch is comprised of identical scissor elements, which simplifies the design and manufacturing process and facilitates the compliance with the deployability constraint in the system. Despite the double curvature of this design, the square bays generated by the intersecting arches produce insufficient lateral stability, which suggest the need to extra diagonal bracing elements such as struts or cables [33]. Preliminary comparative structural analysis of modular deployable structures indicates that maximum stresses in pendentive structures are typically located at the base of the modules.…”

Section: Pendentivementioning

confidence: 99%

Untitled

2019

JCEA

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This paper catalogues the morphology of modular deployable structures of expandable frames developed by the late Felix Escrig at the University of Seville, Spain. The research describes the geometric logic behind these structures, proposes simplified graphic methods for their design, and outlines their characteristics according to their level of geometric precision, structural stability and deployability. Finally, the paper establishes tools and guidelines for their future development.

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Section: Pendentivementioning

confidence: 99%

Untitled

2019

JCEA

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“…With regard to pantographs, Gantes references the pioneers such as Piñero 40 and Zeigler 47 but does not provide a further classification of these particular deployable structures. Instead, Gantes highlights the contribution of Escrig et al 48,49 in their attempt to classify pantographs and two-way deployable spherical grids. 50 This proves how their work was still influential at the time the book was written, so much that Gantes did not feel the necessity to suggest alterations.…”

Section: First Decade Of 21st Centurymentioning

confidence: 99%

“…Other more specific classifications exist, which focus on one of the subclasses mentioned above; for example, Escrig and Valcarcel 49 provide a hierarchy for scissor-hinged mechanisms (pantographs), also investigated by Langbecker 120 who proposed a systematic method for analysing such structures from a kinematic perspective. Prof. Escrig 48,121 from the School of Architecture at the University of Seville conducted prolific research in cooperation with J. Sanchez and J.P. Valcarcel on spherical grids composed of two-way scissors and how to generate them from grids that divide the surface of a sphere.…”

Section: Other Authorsmentioning

confidence: 99%

Deployable structures classification: A review

Fenci

Currie

2017

International Journal of Space Structures

104

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Deployable structures have the capacity to transform and predictably adopt multiple predetermined configurations, moving through known paths, while deploying in a controlled and safe way. These characteristics introduce benefits when considering issues such as ease of transportation, erection and the overall sustainability of the structure by means of high material efficiency, modularisation and maximum use of natural energy resources. The aim of this article is to provide a critical review of existing attempts at classifying deployable structures identifying connections between different families through their mechanical and structural behaviours. The classifications selected consider theoretical and applied deployable structures, not focusing on a single application of deployable structures but including those ranging from spatial applications, to temporary and disaster relief structure, through to medical applications, providing coherence where terminology varies between applications. In order to gain a consistent understanding, tree diagrams were created for the review/classification to allow drawing commonalities and establishing differences between authors. A chronological approach was adopted, using key review work as focal points for the timeline, complemented by smaller more specific pieces of work. This enabled the identification of common features and divergences between the different authors, bringing to the conclusion that a clear, comprehensive, consistent and unified classification of deployable structures is currently missing within the field.

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“…Usually closed form expressions are proposed e.g. in the works of Escrig et al [23], Gantes [24], Puertas Del Río [25], You [26], Kokawa [27],…”

Section: Introductionmentioning

confidence: 99%

Geometric design of triangulated bistable scissor structures taking into account finite hub size

Arnouts

Temmerman

Massart

et al. 2020

International Journal of Solids and Structures

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Pre-assembled scissor structures can be transformed from a compact bundle of elements to a fully deployed configuration, offering a considerable volume expansion. Intended geometrical incompatibilities during transformation can be introduced as a design strategy to obtain bistability, which allows instantaneously achieving some structural stability in the deployed state. Because of these incompatibilities, some specific members bend during transformation, resulting in a controlled potentially tunable snap-through behaviour. Geometric design methodologies were proposed in the literature to obtain a compatible geometry (i.e. with all of the beams straight) in the folded and the deployed configurations. However, most of these approaches do not consider finite hub sizes or introduce extra incompatibilities in the geometry by adding hub legs. In this contribution, deployability conditions are derived taking the finite hub size, i.e. the spacing between the connections of the different beams to the hub, into account to make triangulated bistable scissor modules fully geometrically compatible in the folded and the deployed configuration.

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Two Way Deployable Spherical Grids

Cited by 27 publications

References 4 publications

Untitled

Untitled

Deployable structures classification: A review

Geometric design of triangulated bistable scissor structures taking into account finite hub size

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