考虑碾压状态的振动压路机-路基耦合动力学分析  

Dynamic analysis of vibration roller-subgrade coupling considering the rolling state

作　　者：孙述鹏 王锋会 冯维明[1] 郭超 张茂锋 SUN Shu-peng;WANG Feng-hui;FENG Wei-ming;GUO Chao;ZHANG Mao-feng(School of Civil Engineering,Shandong University,Jinan 250061,China;Shandong Community Construction Machinery Co.,Ltd.,Jining 272073,China)

机构地区：[1]山东大学土建与水利学院,山东济南250061 [2]山东省共同体工程机械有限公司,山东济宁272073

出　　处：《振动工程学报》2023年第5期1273-1279,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(11802129);山东省自然科学基金资助项目(ZR2020QA039)。

摘　　要：为了研究振动压路机钢轮在振动压实作业不同阶段的动力学响应,引入状态向量σ来描述钢轮与路基之间的相互作用,引入塑性参数ε来描述路基的弹塑性状态,建立了振动压路机-路基耦合动力学模型。基于该模型,采用数值积分的方法,得到了钢轮响应的时间历程、相图、频谱、庞加莱截面、分岔图等,对不同塑性参数路基上钢轮的动态响应进行了分析。结果表明:随着压实作业的进行,振动压路机钢轮会经历“单周期运动-倍周期运动-混沌运动”的动力学演化,在单周期运动时存在与路基持续和周期性失去接触的工况,在倍周期以及混沌运动时出现“跳振”现象。In order to study the dynamic response of the drum of vibratory roller during different compaction stages,the drum-sub-grade coupling dynamic model describing the motion of the drum is established,by introducing state vectorσfor the interaction be-tween drum and subgrade,and plastic parameterεfor the elastic-plastic state of subgrade.Based on the model,the time history,phase diagram,frequency spectrum,Poincarémap and bifurcation diagram of the drum’s response are obtained by numerical inte-gration method,and the dynamic responses of the drum associated with various plastic parameters are analyzed.The results show that the drum of vibratory roller exhibits a dynamic evolution of“single period motion-period doubling motion-chaos motion”.In the single period motion,the drum is in constant contact or periodic loss of contact relative to the subgrade,while in the period dou-bling and chaos motion,the phenomenon“bouncing”occurs.The conclusion may help us in the optimization design of vibratory roller to some extent.

关 键 词：振动压路机 弹塑性路基 压实过程 动力响应 

分 类 号：U415.521[交通运输工程—道路与铁道工程] TH113.1[机械工程—机械设计及理论]