Geometry of Expandable Space Structures

Escrig, F.; Pérez-Valcárcel, Juan

doi:10.1177/0266351193008001-208

Cited by 95 publications

(52 citation statements)

References 2 publications

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“…The work of Pinero was sadly curtailed due to his untimely death. However, in later years his ideas were taken up and further developed by (among others) Ziegler, Calatrava, Valcarcel [11], Escrig [3][4], Hernandez, Gantes et al [5][6] , Rosenfeld [8], Logcher, Connor, Shan [9][10].…”

Section: Proceedings Of the International Association For Shell And Smentioning

confidence: 99%

Effect of nanopore geometry on ion current rectification

et al. 2011

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This paper initially investigates the previous works on foldable structures. Subsequently, generation and geometric (architectural) design of compatible foldable structures with scissor-like elements is formulated for various shapes of barrels with no geometric limitations (free forms) for the purpose of configuration processing. Special cases for configuration processing based on given formulation are studied to obtain different geometries. For example, the division of the sum of the internal angles of duplets leads to different geometries. The method employed for this division could be equal between duplets, according to arithmetic or geometric progression, or using algebraic equations. These methods are used to divide the sum of internal angles and radius of curvature; Corresponding geometries are then created and compared. The method to generate a geometry imposed by architectural requirements is also proposed in this work. Using such ordering, one can create and model free form foldable structures. To provide changeability for geometry of the structure, a special mid-connection (pivot) is proposed and a prototype model is constructed to demonstrate the efficiency. To construct real scale foldable structures, some connections and a simple method to analyze and design of this type of connections are proposed. A graph of maximum displacement vs. height of the structure is illustrated. A design-construct methodology for foldable structures is proposed.

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Section: Proceedings Of the International Association For Shell And Smentioning

confidence: 99%

Effect of nanopore geometry on ion current rectification

et al. 2011

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“…Deployable structures with a function of a temporary shelter are expected to enclose a three-dimensional space [6,7].…”

Section: Configurations Of the Structuresmentioning

confidence: 99%

Development of a sustainable construction system for temporary structures

Temmerman

Mira

2011

WIT Transactions on Ecology and the Environment

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Non-static structures that can adapt their shape, or which can be quickly and easily deployed to perform their architectural function and removed afterwards without damaging sensitive sites, are well-equipped to meet the demands of a rapidly changing society which embraces the concept of sustainable design.Generally, mobile deployable structures are capable of transforming from a small, closed or stowed configuration to a much larger, open or deployed configuration. In architecture, the main applications are temporary lightweight structures such as emergency shelters or exhibition and recreational structures. For these purposes deployable scissor structures are most effective. They consist of beam elements connected by pivot joints, allowing them to be folded into a compact bundle for storage or transport. Subsequently, they are deployed, demonstrating a huge volume expansion. This process can be reversed, allowing reuse.In this paper an innovative kit-of-parts system is developed for deployable scissor structures. A new multi-configurational Universal Scissor Component (USC) is geometrically designed to create scissor structures in a generic way. The designed USC -single and unique -is used to compose different configurations. The structures can be disassembled and the USC can then be reconfigured, enabling reuse (cfr. the toy construction system Meccano). The component's uniformity favours mass-production, implying a cost benefit. Moreover, the diversity in possible structural forms invites multiple uses.

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“…Equally, many deployable structures can reverse the process or retract [2]. The classification table by Hanaor and Levy [3] illustrates the variety of deployable structures that include scissor-hinged structures [4,5]; folded plates, often linked to the science of origami [6,7]; tensegrities, based on the separation of the tensile forces from compression ones [8,9]; and membrane structures, such as boundary tension membranes and pneumatic structures [10,11].…”

Section: Introductionmentioning

confidence: 99%

Optimisation of the deployment sequence of 2 dof systems

Fenci¹,

Currie²

2017

Int. J. CMEM

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The methodology for the analysis of deployable structures with 2 degrees of freedom (DoF) and optimisation of the deployment sequence is proposed. A parametrically controlled geometry, based on the design of biomimetic deployable structures, is systematically cycled through all available combinations of deployment and analysed for the full range of available motion established by the two DoFs. In other words, structural analysis is carried out for all potential configurations for the 2 DoFs, which act independently from one another. The results are, then, automatically post-processed to give contour plots showing the change in performance criteria such as the force or moment that develops in the structure during deployment. Knowing that the structure needs to deploy from the fully folded to the fully unfolded state, the generation of convex hull profiles allows the selection of the optimum path to reach the fully deployed state based on whatever the governing criteria is deemed to be, such as maximum deployment force, deflection, weight of structure, or in service stresses.

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Geometry of Expandable Space Structures

Cited by 95 publications

References 2 publications

Effect of nanopore geometry on ion current rectification

Effect of nanopore geometry on ion current rectification

Development of a sustainable construction system for temporary structures

Optimisation of the deployment sequence of 2 dof systems

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