Optimal linkage design for bicycle power transmission using symmetric four-bar

Carl A. Nelson

doi:10.1115/detc2006-99207

Optimal linkage design for bicycle power transmission using symmetric four-bar

Carl A. Nelson

Mechanical & Materials Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Use of a symmetric crank-rocker four-bar linkage is presented as an alternative to the standard bicycle crank. With the coupler being the driven link, a kinematic and force-transmission analysis is presented. Results of constrained nonlinear optimization for geometric synthesis show a substantial improvement in mechanical efficiency compared to the state of the art. Dead-center positions are also eliminated. Potential applications to other linear-to-rotary power transmission devices, such as internal-combustion engines, are also discussed.

Original language	English (US)
Title of host publication	Proceedings of 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006
Publisher	American Society of Mechanical Engineers
ISBN (Print)	079183784X, 9780791837849
DOIs	https://doi.org/10.1115/detc2006-99207
State	Published - 2006
Event	2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006 - Philadelphia, PA, United States Duration: Sep 10 2006 → Sep 13 2006

Publication series

Name	Proceedings of the ASME Design Engineering Technical Conference
Volume	2006

Conference

Conference	2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006
Country/Territory	United States
City	Philadelphia, PA
Period	9/10/06 → 9/13/06

Keywords

Bicycle transmission
Linear-to-rotary power conversion
Optimal design
Symmetric coupler curves
Symmetric four-bar linkage
Transmission ratio

ASJC Scopus subject areas

Modeling and Simulation
Mechanical Engineering
Computer Science Applications
Computer Graphics and Computer-Aided Design

Access to Document

10.1115/detc2006-99207

Cite this

Nelson, C. A. (2006). Optimal linkage design for bicycle power transmission using symmetric four-bar. In Proceedings of 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006 (Proceedings of the ASME Design Engineering Technical Conference; Vol. 2006). American Society of Mechanical Engineers. https://doi.org/10.1115/detc2006-99207

Optimal linkage design for bicycle power transmission using symmetric four-bar. / Nelson, Carl A.
Proceedings of 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006. American Society of Mechanical Engineers, 2006. (Proceedings of the ASME Design Engineering Technical Conference; Vol. 2006).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nelson, CA 2006, Optimal linkage design for bicycle power transmission using symmetric four-bar. in Proceedings of 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006. Proceedings of the ASME Design Engineering Technical Conference, vol. 2006, American Society of Mechanical Engineers, 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006, Philadelphia, PA, United States, 9/10/06. https://doi.org/10.1115/detc2006-99207

Nelson CA. Optimal linkage design for bicycle power transmission using symmetric four-bar. In Proceedings of 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006. American Society of Mechanical Engineers. 2006. (Proceedings of the ASME Design Engineering Technical Conference). doi: 10.1115/detc2006-99207

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abstract = "Use of a symmetric crank-rocker four-bar linkage is presented as an alternative to the standard bicycle crank. With the coupler being the driven link, a kinematic and force-transmission analysis is presented. Results of constrained nonlinear optimization for geometric synthesis show a substantial improvement in mechanical efficiency compared to the state of the art. Dead-center positions are also eliminated. Potential applications to other linear-to-rotary power transmission devices, such as internal-combustion engines, are also discussed.",

keywords = "Bicycle transmission, Linear-to-rotary power conversion, Optimal design, Symmetric coupler curves, Symmetric four-bar linkage, Transmission ratio",

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Optimal linkage design for bicycle power transmission using symmetric four-bar

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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