本文利用结构振动理论对自行车车架与前叉组成的车体结构系统进行了振动特性分析,计算了前叉的动应力.研究表明:前叉质量的合理分布,可以改善其振动响应,动应力明显下降.并对车体结构系统做了振动对比试验.可为优化自行车车体结构的动力学特性提供依据. In this paper, the structural vibration theory is used to analyze the vibration characteristics of the vehicle body structure system composed of the bicycle frame and the front fork, and the dynamic stress of the fork is calculated.The results show that the reasonable distribution of the fork quality can improve the vibration response, dynamic stress Obviously decreased, and compared the vibration of the vehicle body structural system, which can provide the basis for optimizing the dynamic characteristics of bicycle body structure.