|
DOI:
10.3901/CJME.2009.01.021 , available online at www.cjmenet.com;
www.cjmenet.com.cn
Optimal Design
and Dynamic Simulation of Mountain Bike with Rear Suspension
BU Yan1,
XIANG Zhongxia1,
*, HUANG Tian1, ZHANG Xu2, and WANG Xinghua1
1
School of Mechanical Engineering, Tianjin University, Tianjin
300072, China
2 Tianjin Entry-exit Inspection and Quarantine Bureau, Tianjin
300211, China
Received
July 29, 2008; revised November 25, 2008; accepted December 19,
2008; published electronically February 20, 2009
Abstract: This paper investigates the dynamic design
methodology of mountain bikes with rear suspension. Firstly, a
multi-rigid body dynamic model of rider and mountain bike
coupled system is constructed. The rider model includes 19
skeletons, 18 joints and 118 main muscles. Secondly, to validate
the feasibility of the model, an experiment test is designed to
reflect the real cycling status. Finally, aiming at enhancing
the performance of the rider vibration comfort, the scale
parameters of rear suspension are optimized with computer
simulation and uniform design. The mathematical model in the
vibration performance and the design variables is constructed
with regression analysis. The result shows that when the length
of side link is 90 mm, the length of connected rod is 336.115 1
mm and the included angle between absorber and side link is 60°,
the mountain bike has better vibration comfort. This study and
relevant conclusions are of practical importance to the design
of the mountain bike’s rear suspension system.
Key words: mountain bike, model building, dynamic
simulation, experiment test, vibrant comfort, optimal design |
|
|
Biographical notes
BU Yan, born in 1979, female, is a PhD candidate in School of Mechanical
Engineering, Tianjin University, China. Her research interest includes
mechanical kinetics.
Tel: +86-13821190202; E-mail: by0617@163.com
XIANG Zhongxia, born in 1964, female, PhD, is an associate professor in
School of Mechanical Engineering, Tianjin University, China. Her
research interests include mechanical kinetics, mechanical design and
theory, etc.
Tel: +86-22-27401009; E-mail: xiangzhx@tju.edu.cn
HUANG Tian, born in 1952, male, is a professor and a supervisor of PhD
candidate in School of Mechanical Engineering, Tianjin University,
China. His research interests include manufacturing equipment and
system, parallel robot mechanistic, mechanical kinetics.
Tel: +86-22-27405280; E-mail: htiantju@public.tpt.tj.cn
ZHANG Xu, born in 1969, male, master, is an engineer in Tianjin
Entry-exit Inspection and Quarantine Bureau, China. His research
interest includes mechanical design.
Tel: +86-13920478395; E-mail: zhangxu168@vip.sina.com
WANG Xinghua, born in 1954, male, is an engineer in School of Mechanical
Engineering, Tianjin University, China. His research interest includes
product modeling design.
Tel: +86-15302138313
References
[1] WILCZYNSKI H, HULL M L. A dynamic system model for estimating
surface-induced frame loads during off-road cycling[J]. ASME Transaction
on Mechanical Design, 1994, 818(116): 816–822.
[2] WANG E L, HULL M L. Power dissipated by off-road bicycle suspension
systems[J]. Journal of Cycling Science, 1994, 4: 10–13, 26.
[3] WANG E L, HULL M L. A dynamic system model of an off-road cyclist
[J]. ASME Transaction. on Biomechanical Engineering, 1997, 119: 248–253.
[4] REDFIELD R C. Extreme mountain biking dynamics: development of a
bond graph model[C]//Proceedings of the IASTED International Conference
Modeling and Simulation, Palm Springs, CA, USA, February 24–26, 2003.
Anaheim: ACTA Press, 2003, 2: 450–455.
[5] REDFIELD R C. Planar, large excursion bond graph model for full
suspension mountain biking[C]//Proceedings of the ASME Dynamic Systems
and Control Division, Orlando, Florida USA, November 5–11, 2005. New
York: ASME, 2005: 1 157–1 165.
[6] WAECHTER M, RIESS F, ZACHARIAS N. A multi-body model for the
simulation of bicycle suspension systems[J]. Journal of Vehicle System
Dynamics, 2002, 37: 3–28.
[7] CHEN Tsyrjang, CHEN Chunsheng, SUN Zhengwei, et al. Comfort analysis
and parameter design for scooter riding[EB/OL]. (2005–11–1). http://www.mscsoftware.com.tw/training_support/sup
port/VPD_2005/final-mech3.pdf. (in Chinese)
[8] MENG Jie, ZHAO Dongxu, ZHAO Yijia. Numerical simulation analysis of
mountain biking lower extremity motion[C]//Proceeding of National Sports
Equipments and Sports System Simulation Learned Report, Hangzhou, China,
April 13–14, 2006: 227–232. (in Chinese)
[9] ISO 2631-1: 1997 (E) Mechanical vibration and shock — evaluation of
human exposure to whole-body vibration – Part 1: General requirements[S].
Switzerland: International Organization for Standardization, 1997.
[10] TITLESTAD J K, WHITTAKER A R, FAIRLIE-CLARKE A C, et al. Numerical
and experimental simulation of mountain bike suspension systems subject
to regular Impact excitation[J]. Material Science Forum, 2003, 440–441:
111–118.
[11] REDFIELD R C, SELF B, FREDRICKSON B, et al. Motion measurements in
the jumping of a mountain bike[J]. Journal of The Instrumentation,
Systems and Automation Society, 2004, 40: 43–50.
[12] LifeMOD Manual[M/DK]. California: Biomechanics Research Group,
2005.
[13] ISO 5349-1 Mechanical vibration — Measurement and evaluation of
human exposure to hand-transmitted vibration–Part 1: General
requirements[S]. Switzerland: International Organization for
Standardization, 2001.
[14] LI Yunyan, HU Changrong. Experiment design and data analysis[M].
Beijing: Chemical Industry Press, 2005. (in Chinese)
|