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A spatial eight-bar linkage and its association with the deployable platonic mechanisms

Wei, G and Dai, JS 2014, 'A spatial eight-bar linkage and its association with the deployable platonic mechanisms' , Journal of Mechanisms and Robotics, 6 (2) .

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Abstract

This paper presents for the first time a novel two degrees of freedom (2-DOF) single-looped dual-plane-symmetric spatial eight-bar linkage with exact straight-line motion. Geometry and kinematics of the eight-bar linkage are investigated and closed-form equations are presented revealing the exact straight-line motion feature of the linkage on the condition that two symmetric inputs are given. In order to secure two symmetric inputs, a geared eight-bar linkage is then proposed converting the linkage into a 1-DOF linkage of exact straight-line motion. The direction of the straight-line motion produced by the proposed eight-bar linkage is changeable and is only dependent on the structure parameters of the two pairs of V-shaped R-R dyads of the linkage. Further, the proposed eight-bar linkage is applied to the synthesis and construction of a group of deployable Platonic mechanisms with radially reciprocating motion. The virtual-center-based (VCB) method is presented for the synthesis and prototypes of the deployable Platonic mechanisms are fabricated verifying the mobility and motion of the proposed mechanisms.

Item Type: Article
Themes: Subjects outside of the University Themes
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Journal of Mechanisms and Robotics
Publisher: The American Society of Mechanical Engineers
Refereed: Yes
ISSN: 1942-4302
Related URLs:
Funders: EU 7th Framework Programme for Research and Technological Development
Depositing User: Dr Guowu Wei
Date Deposited: 29 May 2015 17:53
Last Modified: 05 Apr 2016 19:27
URI: http://usir.salford.ac.uk/id/eprint/34611

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