Computational Design of Bistable Deployable Scissor Structures: Trends and Challenges

Arnouts, Liesbeth I.W.; Massart, Thierry; Temmerman, Niels De; Berke, Peter

doi:10.20898/j.iass.2019.199.031

Cited by 10 publications

(9 citation statements)

References 41 publications

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“…the maximum von Mises stress during deployment and in the service state must be below the yield stress 𝜎 𝑦 of the material, 2. the vertical displacement in the service state is chosen to be lower than 𝐿 100 ⁄ (Koumar et al [7]) with 𝐿 the maximum spatial dimension of the structure i.e. 2 m, 3. buckling of the beams must be avoided in the service state, which is verified using an analytical criterion following Eurocode 9 (Arnouts et al [2]).…”

Section: Shape and Sizing Optimisation Methodology (Sso)mentioning

confidence: 96%

“…Because of the transformable bistable nature, the design of bistable scissor structures requires assessing both the non-linear transformation behaviour as well as the service state in the deployed configuration (Arnouts et al [2]). A proper structural design has to provide sufficient stiffness in the deployed state, and flexibility during transformation to limit the force required for (un)folding.…”

Section: Introductionmentioning

confidence: 99%

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Coupled Sizing, Shape and Topology Optimisation of Bistable Deployable Structures

Arnouts

Massart

Temmerman³

et al. 2020

Journal of the International Association for Shell and Spatial

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Bistable scissor structures, consisting of beams connected by hinges, are transportable and can be transformed from a compact to a deployed configuration. Geometric incompatibilities can be introduced during transformation to obtain a bistable structural response which enforces some instantaneous structural stability in the deployed state. The design of bistable scissor structures requires assessing both the non-linear transformation behaviour, as well as the service state, since a proper structural design has to provide stiffness in the deployed state as well as flexibility during transformation. These contradicting requirements were formulated previously in Arnouts et al. [1] as a multi-objective shape and sizing optimisation (SSO). The originality of this contribution is the elaboration of a design methodology coupling a novel topology optimisation (TO) to SSO and demonstrating its performance for the design of a bistable deployable wall. In this novel step, the number of bistable deployable modules (BDM) of the structure is optimised at low computational cost by finding the location of BDM, yielding mixed structures composed of BDM and non-bistable modules (NBDM) of lower weight and complexity than structures entirely built from BDM. TO is incorporated and assessed in the design methodology prior or subsequent to the SSO step. It is shown that the mixed structures combining BDM and NBDM resulting from the new coupled TO-SSO approach outperform pure BDM based structures.

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Section: Shape and Sizing Optimisation Methodology (Sso)mentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Coupled Sizing, Shape and Topology Optimisation of Bistable Deployable Structures

Arnouts

Massart

Temmerman³

et al. 2020

Journal of the International Association for Shell and Spatial

Self Cite

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“…Today, although they have not specifically focussed on their study, Roovers and De Temmermann 21,22 have established basic geometric conditions for the design of structures with bi-stable behaviour, Arnouts has led a detailed investigation into the deployment forces of these elements 23 –26 and Zhao et al 27 have studied ‘the experimental and simulated displacements and internal forces on the deployment process of self-locking cuboid foldable structural units’.…”

Section: Introductionmentioning

confidence: 99%

Bias deployable grids with horizontal compound scissor-like elements: A geometric study of the folding/deployment process

Freire-Tellado

Muñoz-Vidal

Pérez-Valcárcel

2021

International Journal of Space Structures

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Bias deployable structural units are two-way structures arranged in a rotational pattern with respect to the edges. They have interesting advantages such as robust three-dimensional operation with supports around their entire base perimeter and the exclusive use of load-bearing scissor-like elements (SLEs). However, they do not have edge trims and their resistance to angular distortion is limited. This article proposes a series of deployable bi-stable structures that address these problems and incorporate new, resilient features. A method of analysing the incompatibilities of the structural unit is developed based solely on the geometric study of the deployment process, which allows the level of incompatibility of the proposal to be graduated, varying from stress-free structures to bi-stable structures. A kinematic model of one of the proposals allows the research undertaken to be contrasted.

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“…Because of the large displacements and rotations and the bistability, the transformation behaviour of bistable scissor structures, first studied computationally by Gantes [11], is highly non-linear. By though analysing bistable scissor structures is a contemporary research topic [12][13][14][15][16][17][18][19], existing applications in civil engineering are rare, largely due to this complex structural behaviour.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimisation of deployable bistable scissor structures

Arnouts

Massart

Temmerman

et al. 2020

Automation in Construction

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Lightweight bistable deployable structures can be designed to be transportable and reusable. They instantaneously achieve some structural stability when transformed from the compact to the deployed state through a controlled snapthrough, as a result of intended geometric incompatibilities between the beams. Due to their transformable bistable nature their design requires assessing both their non-linear transformation behaviour, as well as their service state in the deployed configuration. The requirement of a low peak force during transformation can be shown to oppose the high stiffness requirement in the deployed state; their design can therefore be formulated as a multi-objective nonlinear optimisation problem. In this contribution, a size and shape optimisation method is elaborated by choosing the best material combinations, the optimal geometry of the structure and beam cross-sections. The originality of this contribution is the use of a multi-objective evolutionary algorithm to structurally optimise bistable scissor structures taking into account the deployed state as well as the transformation phase. First, the method is applied to optimise a single bistable scissor module. Next, a multi-module bistable scissor structure is optimised and the single module and full structure based approaches are critically compared.

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Computational Design of Bistable Deployable Scissor Structures: Trends and Challenges

Abstract: This space reserved for the Editor to give such information as date of receipt of manuscript, date of receipt of revisions (if any), and date of acceptance of paper. In addition, a statement about possible written discussion is appended.

Cited by 10 publications

References 41 publications

Coupled Sizing, Shape and Topology Optimisation of Bistable Deployable Structures

Coupled Sizing, Shape and Topology Optimisation of Bistable Deployable Structures

Bias deployable grids with horizontal compound scissor-like elements: A geometric study of the folding/deployment process

Multi-objective optimisation of deployable bistable scissor structures

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