In this paper the effect of front fork compliance on uncontrolled bicycle stability is analyzed. First the benchmark model of a bicycle is improved to take into account either torsion compliance or bending compliance of front fork, a lumped element approach is adopted introducing additional joints restrained by rotational springs and dampers. Two models having three degrees of freedom are developed and implemented in MATLAB codes to perform stability analysis. Then series of experimental tests are carried out on an advanced carbon fork and a standard steel fork, the modal analysis approach is adopted. Experimental methods and results are presented and discussed. A specific method is developed for identifying the stiffness and damping properties from the bending and torsion modes of the forks. Results obtained with the proposed method agree with data presented in literature. Finally, the identified stiffness and damping parameters are implemented in the simulation codes and some numerical simulations are carried out. Results presented in the paper show a small influence of torsion compliance on stability and a large influence of bending compliance on high speed stability.
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ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 2–5, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5710-6
PROCEEDINGS PAPER
The Effect of Front Fork Compliance on the Stability of Bicycles
Alberto Doria,
Alberto Doria
University of Padova, Padova, Italy
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Luca Taraborrelli,
Luca Taraborrelli
University of Padova, Padova, Italy
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Nicola Segliani
Nicola Segliani
University of Padova, Padova, Italy
Search for other works by this author on:
Alberto Doria
University of Padova, Padova, Italy
Luca Taraborrelli
University of Padova, Padova, Italy
Nicola Segliani
University of Padova, Padova, Italy
Paper No:
DETC2015-46103, V003T01A018; 10 pages
Published Online:
January 19, 2016
Citation
Doria, A, Taraborrelli, L, & Segliani, N. "The Effect of Front Fork Compliance on the Stability of Bicycles." Proceedings of the ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 3: 17th International Conference on Advanced Vehicle Technologies; 12th International Conference on Design Education; 8th Frontiers in Biomedical Devices. Boston, Massachusetts, USA. August 2–5, 2015. V003T01A018. ASME. https://doi.org/10.1115/DETC2015-46103
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