dc.contributor | Universidad EAFIT. Departamento de Ingeniería Mecánica | |
dc.contributor | Mecatrónica y Diseño de Máquinas | |
dc.creator | Lamers, A.J. | |
dc.creator | Gallego Sánchez, J.A. | |
dc.creator | Herder, J.L. | |
dc.creator | Lamers, A.J. | |
dc.creator | Gallego Sánchez, J.A. | |
dc.creator | Herder, J.L. | |
dc.date.accessioned | 2021-04-16T20:20:47Z | |
dc.date.available | 2021-04-16T20:20:47Z | |
dc.date.created | 2021-04-16T20:20:47Z | |
dc.date.issued | 2015-10-01 | |
dc.identifier | 0094114X | |
dc.identifier | 03741052 | |
dc.identifier | WOS;000359433800017 | |
dc.identifier | SCOPUS;2-s2.0-84931270181 | |
dc.identifier | http://hdl.handle.net/10784/29299 | |
dc.identifier | 10.1016/j.mechmachtheory.2015.05.014 | |
dc.description.abstract | Monolithic and thus fully compliant surgical graspers are promising when they provide equal or better force feedback than conventional graspers. In this work for the first time a fully compliant grasper is designed to exhibit zero stiffness and zero operation force. The design problem is addressed by taking a building block approach, in which a pre-existing positive stiffness compliant grasper is compensated by a negative stiffness balancer. The design of the balancer is conceived from a 4-bar linkage and explores the rigid-body-replacement method as a design approach towards static balancing. Design variables and sensitivities are determined through the use of a pseudo-rigid-body model. Final dimensions are obtained using rough hand calculations. Justification of the pseudo rigid body model as well as the set of final dimensions is done by non-linear finite element analysis. Experimental validation is done through a titanium prototype of 40 mm size having an unbalanced positive stiffness of 61.2 N/mm showing that a force reduction of 91.75% is achievable over a range of 0.6 mm, with an approximate hysteresis of 1.32%. The behavior can be tuned from monostable to bistable. The rigid-body-replacement method proved successful in the design of a statically balanced fully compliant mechanism, thus, widening the design possibilities for this kind of mechanism. (C) 2015 Elsevier Ltd. All rights reserved. | |
dc.language | eng | |
dc.publisher | Elsevier Ltd | |
dc.relation | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931270181&doi=10.1016%2fj.mechmachtheory.2015.05.014&partnerID=40&md5=c14a3540e094b80f724ae4e6d9d07a62 | |
dc.rights | https://v2.sherpa.ac.uk/id/publication/issn/0094-114X | |
dc.source | MECHANISM AND MACHINE THEORY | |
dc.subject | Static balancing | |
dc.subject | Zero stiffness | |
dc.subject | Pseudo-rigid-body model | |
dc.subject | Compliant mechanisms | |
dc.subject | Laparoscopic grasper | |
dc.subject | Rigid-body-replacement-method | |
dc.title | Design of a statically balanced fully compliant grasper | |
dc.type | info:eu-repo/semantics/article | |
dc.type | article | |
dc.type | info:eu-repo/semantics/publishedVersion | |
dc.type | publishedVersion | |