Dissertation > Transportation > Road transport > Other road transport > Bicycle

Study and Application of Bicycle Design Method Based on Ergonomics

Author WuXiaoFan
Tutor XiangZhongXia
School Tianjin University
Course Mechanical Design and Theory
Keywords Bicycle Ergonomics Modeling Simulation Optimal design Regression analysis
CLC U484
Type Master's thesis
Year 2008
Downloads 551
Quotes 3
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Personalized design for a bicycle to explore the the bike design methods and processes based on ergonomics, and applied to a typical instance, can learn the theoretical basis and guidance for the achieve customization bike design. The full text of the content and conclusions are summarized as follows: First, the motion characteristics of the process of cycling, people - car system model based motion simulation, which the human body model includes the bones, joints and muscles, soft tissue, sports biomechanics analysis . Man - car system sports people - car system model based on simulation. Second, the people - car system simulation results analyzed, the results show that, in the different stages of the ride, the major muscles of the lower extremity force EMG analysis of muscle force situation conclusion is consistent with the foreign scholar Brian people - car system model sports simulation to simulate the real situation, you can conduct in-depth research. Three muscle stress Crownishield RD et al proposed square and the minimum degree of muscle fatigue evaluation, different riding posture of the body motion simulation, comparative analysis of the degree of muscle fatigue conclusion: human upper body posture has little effect on the degree of muscle fatigue. , lower body posture have a greater impact on the degree of muscle fatigue. Fourth, the degree of muscle fatigue a minimum goal, combined with human - vehicle system motion simulation design parameter optimization frame structure. Comprehensive test design and uniform design two methods for simulation experiment design, data samples required to obtain a mathematical model through simulation experiments, using regression analysis to establish the frame structure design variables and optimization of the function indicators relationship. Conclusion: The optimization results uniform design method can significantly reduce the number of experiments conducted simulation experiments, and the results of the comprehensive test design method or less. To optimize the results of the comparative analysis showed that the application to establish a mathematical model to predict the results of the simulation of the system model of human muscle fatigue level with people - car movement is consistent. According to optimize the design parameters, with typical examples designed chassis and frame structural improvements based on the finite element analysis results summarized on this basis, based on the ergonomics of the bike design methodology and design flow.

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