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Design and analysis of flexure revolute joint based on four-bar mechanism
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2018 (English)In: Acta Astronautica, ISSN 0094-5765, E-ISSN 1879-2030, Vol. 151, p. 420-431Article in journal (Refereed) Published
Abstract [en]

In order to avoid the stress concentration and increase rotational angle of a flexure joint, the method of partial separation of storage elements in the motion transmission elements is proposed. A type of flexure revolute joint with large rotational angle is designed based on the block approach. By setting a 4-bar mechanism as the intermediate block which connects the outer ring and the inner ring of the revolute joint, and replacing the rigid bar by a flexible beam, large rotational angles of the joint can be achieved. The basic size of the joint is designed by setting the initial and the constraint condition of the 4-bar mechanism. Then, influence analyses of the size of the linkage joint and large flexible beam on the stress, the torque, and the torsional stiffness are conducted by using nonlinear static analysis method. Based on the requirements for torque and rotational stiffness, the size of the flexure revolute joint is defined. Experiments on the joint, which can rotate 90° are conducted. 

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 151, p. 420-431
Keywords [en]
Block approach, Deployable structure, Flexure revolute joint, Four-bar mechanism, Bars (metal), Flexible structures, Stiffness, Constraint conditions, Design and analysis, Four-bar mechanisms, Nonlinear static analysis methods, Revolute joints, Rotational stiffness, Mechanisms
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-236642DOI: 10.1016/j.actaastro.2018.06.046ISI: 000449246400043Scopus ID: 2-s2.0-85049513465OAI: oai:DiVA.org:kth-236642DiVA, id: diva2:1262875
Note

QC 20181126

Available from: 2018-11-13 Created: 2018-11-13 Last updated: 2018-11-26Bibliographically approved

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Eriksson, Anders

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