电动自行车结构强度影响因素分析
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摘要
为了对电动自行车车架进行结构改进,并分析其结构强度的影响因素,对企业提供的两款电动自行车车架进行了三维实体建模;进行人体动作捕捉、人体生物力学建模及骑行仿真试验,获得了骑行过程中施加于电动自行车车架的载荷;以所获载荷对电动车车架进行加载,对车架的ANSYS有限元进行分析,从而校核了车架疲劳强度及静强度,然后在此基础上对电动车车架结构进行了改进,并分析了电动自行车车架强度的影响因素。该结构改进提高了材料的使用效率,并保证了电动车车架的结构强度。
To improve the struct ures of the electric bicycle frame, and analyze the impacting factors of the strength, the three-dimensional models of the electric bicycle frame provided by the enterprise were constructed. After the human motion capture, human biomechanics modeling and riding simulation test, the loads imposed on the electric bicycle frame was obtained,and based on the ANSYS element finite analysis with the obtained loads, the fatigue strength and static strength were checked.And then the structures of the frame were improved and the impacting factors of the electric bicycle frame strength were analyzed. The efficiency of the material was increased and the strength of the electric bicycle frame structures was ensured by the structure improving.
To improve the struct ures of the electric bicycle frame, and analyze the impacting factors of the strength, the three-dimensional models of the electric bicycle frame provided by the enterprise were constructed. After the human motion capture, human biomechanics modeling and riding simulation test, the loads imposed on the electric bicycle frame was obtained,and based on the ANSYS element finite analysis with the obtained loads, the fatigue strength and static strength were checked.And then the structures of the frame were improved and the impacting factors of the electric bicycle frame strength were analyzed. The efficiency of the material was increased and the strength of the electric bicycle frame structures was ensured by the structure improving.
引文
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[2]Holly Shelton,John Obie Sullivan,Ken Gall.Analysis of the fatigue failure of a mountain bike front shock[J].Engineering Failure Analysis,2004,11(3):375-386.
[3]王树英,郑松林,冯金芝,等.燃料电池轿车前副车架轻量化设计[J].机械设计,2013,30(2):41-44.
[4]Li A Z,Song X S,Wang W,et al.Research on conversion coefficients between bicycle,electric bicycle and pedestrian on Urban road intersection[C]//ICCTP 2009@s Critical Issues In Transportation Systems Planning,Development,and Management.ASCE,2009:1-6.
[5]Moore J K,Kooijman J D G,Schwab A L,et al.Rider motion identification during normal bicycling by means of principal component analysis[J].Multibody System Dynamics,2011,25(2):225-244.
[6]Xiang Z,Tian G,Xu W,et al.Load on bicycle frame during cycling with different speeds and gestures[J].Transactions of Tianjin University,2011,17:270-274.
[7]Zhang J,Han X,Wen G L.Simulation and validation of human head-neck multi-body dynamic model based on ADAMS.Life MOD[J].Journal of System Simulation,2008,20(10):2718-2721.
[8]朱兴兵.摩托车车架的静动态特性研究[D].西安:西安交通大学,2003.
[9]李剑敏.自行车构架的有限元分析[J].浙江丝绸工学院学报,1995,12(2):38-43.
[10]孙波.便携式自行车车架建模与有限元分析[J].机械工程与自动化,2009(1):80-81.