A strain distribution based classification of ortho-planar springs: An outlook to piezoelectric applications

R.B. van Kempen, Just Herder, Nima Tolou

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

37 Citations (Scopus)

Abstract

Ortho-planar springs are characterized by their planar shape and the dominant out of plane motion. These springs have benefits for integration in piezoelectric energy harvesting transducers, because of their compactness and monolithic planar manufacturing. The operating behavior in the first low frequency bending mode can be optimized by obtaining an appropriate strain distribution. A holistic design approach is proposed that contains both the focus on strain distribution as on the low frequency dynamic operation challenge. Therefore a classification based on the strain distribution has been made, which is derived from the perspective of loading, clamping and geometry of single flexures of ortho-planar springs. A comparison based on the type of strain (bending/torsion ratio), strain inversion,off-axis stiffness and the natural frequency-normalized area factor (NFNA) has been performed. The double clamped folded configuration shows the most potential for future optimal low frequency transducer designs.
Original languageEnglish
Title of host publicationProceedings of the 21st Design for Manufacturing and the Life Cycle Conference, 10th International Conference on Micro- and Nanosystems
Subtitle of host publicationASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Place of PublicationNew York, NY, USA
PublisherASME
Pages1-12
Volume4
ISBN (Print)978-0-7918-5014-5
DOIs
Publication statusPublished - 2016
Event21st Design for Manufacturing and the Life Cycle Conference; 10th International Conference on Micro- and Nanosystems - Charlotte, North Carolina, United States
Duration: 21 Aug 201624 Aug 2016

Publication series

NameASME Conference Proceedings

Conference

Conference21st Design for Manufacturing and the Life Cycle Conference; 10th International Conference on Micro- and Nanosystems
CountryUnited States
CityCharlotte, North Carolina
Period21/08/1624/08/16

Keywords

  • Springs

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    van Kempen, R. B., Herder, J., & Tolou, N. (2016). A strain distribution based classification of ortho-planar springs: An outlook to piezoelectric applications. In Proceedings of the 21st Design for Manufacturing and the Life Cycle Conference, 10th International Conference on Micro- and Nanosystems: ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (Vol. 4, pp. 1-12). [V004T08A013] (ASME Conference Proceedings). ASME. https://doi.org/10.1115/DETC2016-59250