A Sarrus-like overconstrained eight-bar linkage and its associated Fulleroid-like platonic deployable mechanisms

Xiu, Haohua; Wang, Kunyang; Wei, Guowu; Ren, Lei; Dai, Jian S.

doi:10.1177/0954406218816343

Cited by 22 publications

(5 citation statements)

References 42 publications

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“…The schematic structure of Sarrus linkages is shown in Figure 3, which is a spatial six-bar mechanism with high stiffness, high bearing capacity, simple structure, and low cost [17,18]. It is composed of upper and lower plates (AB) and four side plates (RSTU), which is connected by two groups of six rotating pairs.…”

Section: A Bionic Morphing Wing Based On Sarrus Linkagesmentioning

confidence: 99%

Analysis of Motion Characteristics of Bionic Morphing Wing Based on Sarrus Linkages

et al. 2022

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The variant aircraft can flexibly change its shape to achieve the best sports performance under different flight environments and flight missions. Changing the shape of the wings is a major form of variant aircraft. In this paper, the kingfisher was selected as the bionic object to design a morphing wing. A three-stage lateral folding morphing wing based on Sarrus linkages was presented and applied to the construction of an underwater–aerial transmedia aircraft. The multi-body dynamics method was used to analyze the kinematic characteristics of the morphing wing and to optimize the design of the folding mechanism for the torque values of the hinges between the bottom links. The results showed that the optimized hinge torque value was reduced to 1.2085 N·m, and the lengths of the bottom two links were calculated to be 140 mm and 142 mm, respectively, based on the optimized results. Finally, a series of wing folding and unfolding motion experiments were conducted to prove that the mechanism enabled the span change smoothly, which verified the rationality of the design of this paper.

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Section: A Bionic Morphing Wing Based On Sarrus Linkagesmentioning

confidence: 99%

Analysis of Motion Characteristics of Bionic Morphing Wing Based on Sarrus Linkages

et al. 2022

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“…In addition, Chen et al (2018) proposed a 1-DOF shape transformation between two paired polyhedrons by introducing 6R spatial links. Xiu et al (2020) presented a Sarruss-like overconstrained spatial eight-bar linkage and an associated Fulleroid-like DM.…”

Section: Introductionmentioning

confidence: 99%

Design of an origami-based cylindrical deployable mechanism

et al. 2022

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Abstract. In this paper, an innovative cylindrical deployable mechanism (DM) based on rigid origami is presented, which is used to design a parabolic cylindrical deployable antenna. The mechanism can be deployed from the cuboid folded configuration to the cylindrical unfolded configuration with only one actuator. First, an innovative deployable string is proposed based on different types of four-vertices origami unit cells and kirigami techniques. By considering the units as 6R single-loop mechanisms, the kinematics of the origami unit cells are analyzed. Through the connection of identical deployable strings, the cylindrical DM is constructed, and its mobility is analyzed utilizing the screw theory. Then the proposed DM is used to design a parabolic cylindrical deployable antenna. A number of pillars are installed on the panels of the DM, and their lengths are determined to fit the required parabolic cylindrical surface. To verify the feasibility of the design, a scaled prototype of the deployable antenna is constructed.

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“…In addition, more deformable robots based on deployable polyhedral mechanism have been developed. This kind of robot has the same characteristics, such as multi-platform and multi-chain (Li et al , 2016; Xiu et al , 2018; Ding et al , 2013). Abrahantes et al (2007, 2008, 2010) and Curtis et al (2007) proposed a series of linear driven rolling mechanisms based on multi-tetrahedral elements, which had good flexibility and adaptability.…”

Section: Introductionmentioning

confidence: 99%

Design and motion analysis of double quadrilateral mobile mechanism

Cheng

Ma²,

Ruan³

et al. 2022

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Purpose The purpose of this paper is to propose an overall deformation rolling mechanism based on double four-link mechanism. The double quadrilateral mobile mechanism (DQMM) has two switchable working modes which can be used to traverse different terrains or climb over obstacles. Design/methodology/approach The main body of the DQMM is composed of a double four-link mechanism which sharing a public link and two symmetrical steering platforms which placed at both ends of the four-link mechanism. The steering platforms give the DQMM not only steering ability but also reconnaissance ability which can be achieved by carrying sensors such as cameras on steering platforms. By controlling the deformation of the DQMM, it can switch between two working modes (tracked rolling mode and obstacle-climbing mode) to achieve the functions of rolling and obstacle-climbing. Dynamic simulation model was established to verify the feasibility. Findings Based on the kinematics analysis and simulation results of the DQMM, its moving function is realized by the tracked rolling mode, and the obstacle-climbing mode is used to climb over obstacles in structured terrains such as continuous stairs. The feasibility of the two working modes is verified on a physical prototype. Originality/value The work of this paper is a new exploration of applying “overall closed moving linkages mechanism” to the area of small mobile mechanisms. The adaptability of different terrains and the ability of obstacle-climbing are improved by the combination of multi-modes.

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A Sarrus-like overconstrained eight-bar linkage and its associated Fulleroid-like platonic deployable mechanisms

Cited by 22 publications

References 42 publications

Analysis of Motion Characteristics of Bionic Morphing Wing Based on Sarrus Linkages

Analysis of Motion Characteristics of Bionic Morphing Wing Based on Sarrus Linkages

Design of an origami-based cylindrical deployable mechanism

Design and motion analysis of double quadrilateral mobile mechanism

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