摘要
建立了正常与"跳振"状态下振动压路机与被压材料的动力学模型,对振动轮加速度随被压材料模量的变化进行了数值仿真和试验验证。结果表明,在"跳振"状态下振动轮振动加速度发生畸变,各次谐波分量增多,0.5次谐波分量与激振主频分量幅值比大小可以表示"跳振"程度,在压实作业时应避免压路机出现"跳振"。
Dynamic models of vibratory rollers in normal and double jumping conditions were established, and numerical simulation and experimental validation of vibratory wheel＇s acceleration along with the variation of modulus of crushed material were conducted. Results show that harmonic distortion of vibratory wheel acceleration appears and harmonic component increases under double jumping condition. The amplitude ratio of 0.5 times harmonic component and vibration frequency component indicates the degree of double jumping, which should be avoided during compaction.
出处
《筑路机械与施工机械化》
2014年第8期73-75,共3页
Road Machinery & Construction Mechanization
关键词
跳振
振动压路机
频率
谐波
double jumping
vibratory roller
frequency
harmonic
