摘要
针对振动压路机一级橡胶减振系统的工作状态进行分析,推导出橡胶减振系统动刚度及动阻尼的计算方法,通过试验探究振动频率对橡胶减振系统动态参数的影响规律,指出随着钢轮振动频率的增加,橡胶减振系统的动刚度、动阻尼大致呈二次曲线规律变化,且与压路机低幅振动时相比,在同一振动频率下高幅振动时一级橡胶减振系统表现出的动刚度更大.对于试验样机而言,当振动频率为30~35 Hz时机架与钢轮的振动相位差最大,一级减振系统的动阻尼值最大.
By analyzing the working state of the first rubber damping system of vibratory rollers, the calculation method of the dynamic stiffness and damping coefficient is derived. Then the influence rules of the vibration frequency on the dynamic parameters of rubber damping system are worked out by experiment. It is pointed out that the law of dynamic stiffness and damping coefficient changing with vibration frequency could be described as a quadratic curve. Besides, the first rubber damping system shows greater dynamic stiffness in high-amplitude condition compared to low-amplitude vibration of the same frequency. And for the experimental prototype, the phase difference between the drum and frame reaches a maximum when the vibration frequency is about 30-35Hz, so as the dynamic damping coefficient.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2014年第10期1378-1382,共5页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(51208044)
关键词
振动压路机
橡胶减振器
动刚度
动阻尼
振动频率
vibratory roller
rubber damper
dynamic stiffness
dynamic damping coefficient
vibration frequency
