振动压路机振动轮跳振时的次谐波振动现象

Subharmonics in the Jump Vibration of a Vib-Roller Drum

建立了跳振状态下的振动压路机振动轮的非线性力学模型 .数值计算结果表明 ,振动轮跳振时很可能产生特殊的次谐波振动分量 ,而且在一定条件下有可能发生混沌 ,现场测试结果与理论分析一致 .本文结果对振动轮工作状态监测和被压实材料密实度的估计具有参考价值 .

This paper advances a nonlinear dynamic model dealing with the jump vibration for the drum of a vibratory roller. The simulations show that subharmonics may occur while the drum is taking a jump vibration,which is likely to turn into chaos under some conditions.The field measurement supports the theoretical results.The conclusions in this paper may be useful for the condition monitoring of a vibratory roller and the estimation of the soil compaction.