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Optimal Design and Dynamic Simulation of Mountain Bike with Rear Suspension
Authors:BU Yan XIANG Zhongxia HUANG Tian ZHANG Xu WANG Xinghua
Affiliation:[1]School of Mechanical Engineering, Tianjin University, Tianjin 300072, China [2]Tianjin Entry-exit Inspection and Quarantine Bureau, Tianjin 300211, China
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.
Keywords:mountain bike  model building  dynamic simulation  experiment test  vibrant comfort  optimal design
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