碳纤维自行车车架的有限元分析

Finite element analysis for carbon fiber bicycle frame

利用SolidWorks软件自带的自行车车架模型,用SolidWorks Simulation软件进行模拟。设计36种不同的碳纤维铺层应用于自行车车架,根据自行车实际使用情况,分坐立、站立、行驶三种情况设置边界条件和载荷,分析讨论von Mises应力和合位移,求出碳纤维自行车车架的最佳铺层。将三种情况下测试的von Mises应力和合位移结果综合比较,发现铺层[0/+45/-45/0]s和[0/+30/-30/0]s,在三种不同测试载荷下,具有较小的von Mises应力和合位移,为较佳设计。比较所有应力集中区域,发现最大应力集中发生于车架管件连接部位,前管合位移最大,可以考虑适当补强。

By using the bicycle frame model comes from the SolidWorks software and then simulate it through the SolidWorks Simulation software. Design 36 different species of stacking sequences, according to the actual use of bicycles, we set three cases of boundary conditions and loads when sitting, standing and moving, find out the best stacking sequences by comparing the von Mises stresses and displacements. From the finite element results, the stacking sequences [0/＋45/-45/0]s and [0/＋30/-30/0]s are the better designs for the composite bicycle frames which have the smaller von Mises stresses and displacements. In addition, we find that stress is mainly concentrated in connections of the frame and the front tube has the maximum displacements, so reinforcement will be better