本文对某自行车的车架和前叉进行了静、动态电测应力分析和有限元应力计算,得到了结构在不同工况下的静、动态应力分布规律,所得测试结果和计算结果比较符合,并和实际破坏情况一致。在应力测试的基础上,进行了车架的优化设计。应用“齿形法”进行结构元件最轻重量设计,对某厂生产的自行车车架进行了实际计算。所得结果表明,可使重量有较大减轻。 In this paper, static and dynamic electric stress analysis and finite element stress calculation are carried out on the frame and fork of a bicycle. The static and dynamic stress distribution rules of the structure under different working conditions are obtained. The obtained test results are in good agreement with the calculated results, And consistent with the actual destruction. Based on the stress test, the optimal design of the frame was carried out. Applying the “toothed method” to design the lightest weight of the structural elements, the bicycle frame made in a factory is actually calculated. The results show that the weight can be greatly reduced.