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Ring-Based Stiffening Flexure Applied as a Load Cell With High Resolution and Large Force Range

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dc.contributor Kluger, Jocelyn Maxine
dc.contributor Slocum, Alexander H
dc.contributor Sapsis, Themistoklis P.
dc.creator Kluger, Jocelyn Maxine
dc.creator Slocum, Alexander H
dc.creator Sapsis, Themistoklis P.
dc.date 2018-12-20T14:30:51Z
dc.date 2018-12-20T14:30:51Z
dc.date 2017-06
dc.date 2018-12-18T16:00:59Z
dc.date.accessioned 2023-03-01T18:09:10Z
dc.date.available 2023-03-01T18:09:10Z
dc.identifier 1050-0472
dc.identifier http://hdl.handle.net/1721.1/119789
dc.identifier Kluger, Jocelyn M., Alexander H. Slocum, and Themistoklis P. Sapsis. “Ring-Based Stiffening Flexure Applied as a Load Cell With High Resolution and Large Force Range.” Journal of Mechanical Design 139, no. 10 (August 30, 2017): 103501. © 2017 by ASME
dc.identifier https://orcid.org/0000-0002-5048-4109
dc.identifier https://orcid.org/0000-0003-0302-0691
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278947
dc.description This paper applies linear elastic theory and Castigliano's first theorem to design nonlinear (stiffening) flexures used as load cells with both large force range and large resolution. Low stiffness at small forces causes high sensitivity, while high stiffness at large forces prevents over-straining. With a standard 0.1 lm deflection sensor, the nonlinear load cell may detect 1% changes in force over five orders of force magnitude. In comparison, a traditional linear load cell functions over only three orders of magnitude. We physically implement the nonlinear flexure as a ring that increasingly contacts rigid surfaces with carefully chosen curvatures as more force is applied. We analytically describe the load cell performance as a function of its geometry. We describe methods for manufacturing the flexure from a monolithic part or multiple parts. We experimentally verify the theory for two load cells with different parameters.
dc.format application/pdf
dc.publisher ASME International
dc.relation http://dx.doi.org/10.1115/1.4037243
dc.relation Journal of Mechanical Design
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.source ASME
dc.title Ring-Based Stiffening Flexure Applied as a Load Cell With High Resolution and Large Force Range
dc.type Article
dc.type http://purl.org/eprint/type/JournalArticle


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