A compliant-mechanism-based lockable prismatic joint for high-load morphing structures

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dc.contributor.authorZhao, Yinjun
dc.contributor.authorHao, Guangbo
dc.contributor.authorChai, Luguang
dc.contributor.authorTian, Yingzhong
dc.contributor.authorXi, Fengfeng
dc.contributor.funderChina Scholarship Councilen
dc.date.accessioned2022-09-30T11:31:38Z
dc.date.available2022-09-30T11:31:38Z
dc.date.issued2022-09-12
dc.date.updated2022-09-30T11:22:18Z
dc.description.abstractLockable joints are widely used in robotic systems and adaptive structures for energy management and/or topology reconfiguration. However, it is still challenging to design a joint with desired properties, including high locking load, infinite locking positions, short switching time, energy-efficient control, and a compact and lightweight structure. This paper aims at this open problem by presenting a novel piezoelectric (PZT) actuated lockable prismatic joint. This joint is a compliant mechanism (CM) consisting of a compound bridge-type compliant mechanism (CBCM) and a pair of compound multibeam parallelogram mechanisms (CMPMs). It can produce the required input/output stiffness to transmit large forces for high-load locking. It can also provide a desired input/output motion range for PZT actuation-based unlocking and for facilitating preloading adjustment. An analytical model is presented based on a compliance matrix method and the nonlinear model of the CMPM to predict the joint's static characteristics under various input/output conditions. A two-step optimization framework is proposed for locking applications. The theoretical study and nonlinear FEA/experimental verification confirm the feasibility of the design and the accuracy of the proposed model.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid105083en
dc.identifier.citationZhao, Y., Hao, G., Chai, L., Tian, Y. and Xi, F. (2022) 'A compliant-mechanism-based lockable prismatic joint for high-load morphing structures', Mechanism and Machine Theory, 178, 105083 (25pp). doi: 10.1016/j.mechmachtheory.2022.105083en
dc.identifier.doi10.1016/j.mechmachtheory.2022.105083en
dc.identifier.endpage25en
dc.identifier.issn0094-114X
dc.identifier.journaltitleMechanism and Machine Theoryen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/13715
dc.identifier.volume178en
dc.language.isoenen
dc.publisherElsevier Ltd.en
dc.rights© 2022, The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectCompliant mechanismsen
dc.subjectLockable jointsen
dc.subjectMorphing structuresen
dc.subjectParametric optimizationen
dc.subjectPZT actuationen
dc.subjectStatic modelingen
dc.titleA compliant-mechanism-based lockable prismatic joint for high-load morphing structuresen
dc.typeArticle (peer-reviewed)en
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