Geometric Design of Deploybale Structures with Discrete Joint Size

Gantes, Charis J.; Logcher, Robert D.; Connor, Jerome J.; Rosenfeld, Yehiel

doi:10.1177/0266351193008001-211

Cited by 15 publications

(19 citation statements)

References 1 publication

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“…In [39] it is explained how scaling a lightweight structure as a whole will affect the design of structural parts. The design methodology proposed here for deployable structures is largely based on these concepts, and makes use of the specific geometric and structural behaviour characteristics of deployable structures that are described in other publications of the authors [13,14,22,23,16,17,18,19,21,20,25,26,15,12,24]. The proposed generic design methodology for deployable structures of any shape is illustrated in Figure 3.…”

Section: A Generic Design Methdologymentioning

confidence: 99%

“…The overall design problem has been broken down into three smaller subproblems that are, in hierarchical order, geometric design, structural design in the deployed configuration under service loads, and structural design during deployment. Geometric design has the highest priority, because only full satisfaction of the geometric constraints discussed in [13,22,23,17,20] guarantees the desired property of deployability. The assignment of higher priority to the design under service loads than that during deployment reflects our basic design philosophy.…”

Section: A Generic Design Methdologymentioning

confidence: 99%

“…Since these two objectives contradict each other, iterations are necessary until a balanced behaviour is achieved. The authors have been studying the behaviour of these structures during the last few years [13,14,22,23,16,17,18,19,21,20,25,26,15,12,24]. This paper contains their final recommendations on a design methdology that aims at reducing the number of iterations and the required computational effort.…”

Section: Introductionmentioning

confidence: 99%

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A Systematic Design Methodology for Deployable Structures

Gantes

Connor

Logcher

1994

International Journal of Space Structures

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The deployable structures investigated in this paper are prefabricated space frames made of basic units consisting of two straight bars connected to each other by a pivot, the so called scissor-like-elements. They can be stored in a compact folded configuration, and can be easily deployed into large, load carrying forms by simple articulation. In order to avoid major disadvantages of previous designs, the structures examined here obey strict geometric rules so that they are self-standing and stress-free in both their folded and deployed configurations. During deployment however, geometric incompatibility between member lengths results in a geometrically nonlinear structural behaviour. The optimum design of such a structure has to provide a compromise between desired stiffness in the deployed configuration, and desired felxibility during deployment.

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Section: A Generic Design Methdologymentioning

confidence: 99%

Section: A Generic Design Methdologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Systematic Design Methodology for Deployable Structures

Gantes

Connor

Logcher

1994

International Journal of Space Structures

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“…Gantes and Connor formulated a systematic approach for the geometric and structural design for bistable deployable structures [8][9][10][11][12][13][14]. Their geometric design approach included the deployability conditions for flat, curved and arbitrarily shaped bistable scissor modules without and with hub size (i.e.…”

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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“…Their studies proved that a defined geometry can be obtained from the multiplication of different units. In addition to the development of geometric designs for new structures, Escrig's [8,9], Gantes' [10][11][12][13][14] and Langbecker's works [15,16] also aimed at explaining the structural behaviour of the scissor-hinge structures in analytical and numerical ways, and at proposing methods for their combined geometric and structural design. However, the work of these researchers also concentrated on structures that are transformed between two pre-defined geometries, an open and a closed one, without attempting to provide additional geometric flexibility of scissor-hinge structures.…”

Section: Introductionmentioning

confidence: 99%

A novel concept of convertible roofs with high transformability consisting of planar scissor-hinge structures

Akgün

Gantes

Kalochairetis

et al. 2010

Engineering Structures

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a b s t r a c tIn this paper, a new adaptive scissor-hinge structure is introduced, which can be converted by means of actuators between a multitude of curvilinear arch-like shapes, where it can be stabilized and carry loads. The key point of this new structure is the proposed Modified Scissor-Like Element (M-SLE). With the development of this element, it becomes possible to change the geometry of the whole system without changing the dimensions of the struts or the span. The proposed scissor-hinge structure discussed here is planar, but it is also possible to combine structures in groups to create spatial systems. After outlining the differences of the proposed structure with existing designs, the dimensional properties of the M-SLE are introduced. Then, geometric principles and shape limitations of the whole structure are explained. Finally, structural analysis of the structure in different geometric configurations is performed, in order to discuss stiffness limitations associated with the advantage of increased mobility.

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Geometric Design of Deploybale Structures with Discrete Joint Size

Cited by 15 publications

References 1 publication

A Systematic Design Methodology for Deployable Structures

A Systematic Design Methodology for Deployable Structures

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

A novel concept of convertible roofs with high transformability consisting of planar scissor-hinge structures

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