螺旋弹簧多用于动力系统且常易发生疲劳破坏。为了避免弹簧的疲劳破坏,设计者应对弹簧由振动所引起的动力影响加以考虑。 本文对承受反复运动的螺旋弹簧的动态特性进行了分析与试验。直接把均匀杆纵向振动的数学模型用于弹簧的动力分析。给出了力的传递比和动弹簧模量公式,便于设计者估算弹簧所允许的工作频率范围。 Helical springs are often used in power systems and are prone to fatigue damage. In order to avoid the fatigue damage of the spring, the designer should consider the dynamic influence of the spring caused by the vibration. In this paper, the dynamic characteristics of the helical spring under repeated motion are analyzed and tested. The mathematical model of the longitudinal vibration of the uniform rod is used to analyze the spring dynamic. The force transfer ratio and dynamic spring modulus formulas are given to allow the designer to estimate the range of operating frequencies allowed by the spring.