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Geometric design of triangulated bistable scissor structures taking into account finite hub size Vrije Universiteit Brussel
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 ...
Computational design of bistable deployable scissor structures: trends and challenges Vrije Universiteit Brussel
Mobile deployable scissor structures are transportable and can be transformed rapidly from a compact folded state offering a huge 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. In such bistable deployable structures, these incompatibilities result in the elastic ...
Computational modelling of the transformation of bistable scissor structures with geometrical imperfections Vrije Universiteit Brussel
In many applications structures need to be easily moveable, or assembled at high speed on unprepared sites. For this purpose, preassembled deployable structures, which consist of beam elements connected by hinges, are highly effective. Intended geometric incompatibilities between the members are introduced for instantaneous structural stability after deployment. In such bistable scissor structures, these incompatibilities result in the bending ...
Computational assessment of the deployment of bistable scissor structures Vrije Universiteit Brussel
Preassembled scissor structures are transportable and can be transformed rapidly while offering a huge volume expansion. Intended geometrical incompatibilities between the members during transformation can be introduced as a design strategy to obtain bistability, which allows instantaneously achieving some structural stability in the deployed state. In such bistable scissor structures, these incompatibilities result in the bending of some ...
Coupled sizing, shape and topology optimisation of bistable deployable structures Vrije Universiteit Brussel
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, ...
Structural optimisation of a bistable deployable scissor module Vrije Universiteit Brussel
Bistable deployable scissor structures can be designed to be transportable and can easily be transformed between two stable states, the compact and the deployed state, offering a huge volume expansion. In the deployed state they instantaneously reach structural stability as a consequence of an intended snap-through behaviour during transformation, generated by designed geometric incompatibilities. The design of such structures is ideally based ...
Corotational 3D joint finite element tailored for the simulation of bistable deployable structures Vrije Universiteit Brussel
The 3D deployable frames studied in this work are structures composed of elastic beam elements connected by complex joints. During transformation a controlled snap-through allows the instantaneous stabilization of the structure in an open and in a closed, compact configuration. The mechanics of the transformation is highly nonlinear, since it relies on finite rotations of the structural elements. It is also strongly influenced by geometrical ...
Bistable scissor structure: computational design and modelling Vrije Universiteit Brussel
In many applications structures need to be easily moveable, or deployed at high speed on unprepared sites. For this purpose, pre-assembled deployable structures, which consist of beam elements connected by hinges, are highly effective: transportable with a rapid transformation and a huge volume expansion. Intended geometric incompatibilities between the members can be introduced as a design strategy to instantaneously achieve a structural ...
Inflatable soft jumper inspired by shell snapping KU Leuven
Fluidic soft actuators are enlarging the robotics toolbox by providing flexible elements that can display highly complex deformations. Although these actuators are adaptable and inherently safe, their actuation speed is typically slow because the influx of fluid is limited by viscous forces. To overcome this limitation and realize soft actuators capable of rapid movements, we focused on spherical caps that exhibit isochoric snapping when ...