Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal Tests

The aim of this study was to analyse the effect of forces applied to pedals and cranks on the strain imposed to an instrumented bicycle motocross (BMX) frame. Using results from a finite element analysis to determine the localisation of highest stress, eight strain gauges were located on the down tu...

Full description

Bibliographic Details
Main Authors: Aneliya V. Manolova, Samuel Crequy, Philippe Lestriez, Pierre Debraux, William M. Bertucci
Format: Article
Language:English
Published: MDPI AG 2015-06-01
Series:Sports
Subjects:
Online Access:http://www.mdpi.com/2075-4663/3/2/87
id doaj-c9c05838d08b4c08a96e9432539de58c
record_format Article
spelling doaj-c9c05838d08b4c08a96e9432539de58c2020-11-24T21:05:52ZengMDPI AGSports2075-46632015-06-01328710210.3390/sports3020087sports3020087Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal TestsAneliya V. Manolova0Samuel Crequy1Philippe Lestriez2Pierre Debraux3William M. Bertucci4Groupe de Recherche En Sciences Pour l'Ingénieur (GRESPI, EA4694), Université de Reims-Champagne-Ardenne (URCA), Moulin de la Housse 51687 Reims cedex 2, FranceGroupe de Recherche En Sciences Pour l'Ingénieur (GRESPI, EA4694), Université de Reims-Champagne-Ardenne (URCA), Moulin de la Housse 51687 Reims cedex 2, FranceGroupe de Recherche En Sciences Pour l'Ingénieur (GRESPI, EA4694), Université de Reims-Champagne-Ardenne (URCA), Moulin de la Housse 51687 Reims cedex 2, FranceGroupe de Recherche En Sciences Pour l'Ingénieur (GRESPI, EA4694), Université de Reims-Champagne-Ardenne (URCA), Moulin de la Housse 51687 Reims cedex 2, FranceGroupe de Recherche En Sciences Pour l'Ingénieur (GRESPI, EA4694), Université de Reims-Champagne-Ardenne (URCA), Moulin de la Housse 51687 Reims cedex 2, FranceThe aim of this study was to analyse the effect of forces applied to pedals and cranks on the strain imposed to an instrumented bicycle motocross (BMX) frame. Using results from a finite element analysis to determine the localisation of highest stress, eight strain gauges were located on the down tube, the seat tube and the right chain stay. Before the pedaling tests, static loads were applied to the frame during bench tests. Two pedaling conditions have been analysed. In the first, the rider was in static standing position on the pedals and applied maximal muscular isometric force to the right pedal. The second pedaling condition corresponds to three pedaling sprint tests at submaximal intensities at 150, 300 and 550 W on a cycle-trainer. The results showed that smaller strain was observed in the pedaling condition than in the rider static standing position condition. The highest strains were located in the seat tube and the right chain stay near the bottom bracket area. The maximum stress observed through all conditions was 41 MPa on the right chain stay. This stress was 11 times lower than the yield stress of the frame material (460 MPa). This protocol could help to adapt the frame design to the riders as a function of their force and mechanical power output. These results could also help design BMX frames for specific populations (females) and rider morphology.http://www.mdpi.com/2075-4663/3/2/87biomechanicscyclingBMX framepedal forces
collection DOAJ
language English
format Article
sources DOAJ
author Aneliya V. Manolova
Samuel Crequy
Philippe Lestriez
Pierre Debraux
William M. Bertucci
spellingShingle Aneliya V. Manolova
Samuel Crequy
Philippe Lestriez
Pierre Debraux
William M. Bertucci
Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal Tests
Sports
biomechanics
cycling
BMX frame
pedal forces
author_facet Aneliya V. Manolova
Samuel Crequy
Philippe Lestriez
Pierre Debraux
William M. Bertucci
author_sort Aneliya V. Manolova
title Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal Tests
title_short Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal Tests
title_full Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal Tests
title_fullStr Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal Tests
title_full_unstemmed Relationship between the Pedaling Biomechanics and Strain of Bicycle Frame during Submaximal Tests
title_sort relationship between the pedaling biomechanics and strain of bicycle frame during submaximal tests
publisher MDPI AG
series Sports
issn 2075-4663
publishDate 2015-06-01
description The aim of this study was to analyse the effect of forces applied to pedals and cranks on the strain imposed to an instrumented bicycle motocross (BMX) frame. Using results from a finite element analysis to determine the localisation of highest stress, eight strain gauges were located on the down tube, the seat tube and the right chain stay. Before the pedaling tests, static loads were applied to the frame during bench tests. Two pedaling conditions have been analysed. In the first, the rider was in static standing position on the pedals and applied maximal muscular isometric force to the right pedal. The second pedaling condition corresponds to three pedaling sprint tests at submaximal intensities at 150, 300 and 550 W on a cycle-trainer. The results showed that smaller strain was observed in the pedaling condition than in the rider static standing position condition. The highest strains were located in the seat tube and the right chain stay near the bottom bracket area. The maximum stress observed through all conditions was 41 MPa on the right chain stay. This stress was 11 times lower than the yield stress of the frame material (460 MPa). This protocol could help to adapt the frame design to the riders as a function of their force and mechanical power output. These results could also help design BMX frames for specific populations (females) and rider morphology.
topic biomechanics
cycling
BMX frame
pedal forces
url http://www.mdpi.com/2075-4663/3/2/87
work_keys_str_mv AT aneliyavmanolova relationshipbetweenthepedalingbiomechanicsandstrainofbicycleframeduringsubmaximaltests
AT samuelcrequy relationshipbetweenthepedalingbiomechanicsandstrainofbicycleframeduringsubmaximaltests
AT philippelestriez relationshipbetweenthepedalingbiomechanicsandstrainofbicycleframeduringsubmaximaltests
AT pierredebraux relationshipbetweenthepedalingbiomechanicsandstrainofbicycleframeduringsubmaximaltests
AT williammbertucci relationshipbetweenthepedalingbiomechanicsandstrainofbicycleframeduringsubmaximaltests
_version_ 1716767653178114048