双钢轮振荡压路机动力学建模仿真及参数优化  

Dynamic Simulation and Parameter Optimization on Double Drum Oscillating Roller

作　　者：卢礼洋 周志立 李军 LU Liyang;ZHOU Zhili;LI Jun(School of Vehicle and Transportation Engineering,Henan University of Science and Technology,Luoyang,Henan 471003,China;School of Mechanical Engineering,Luoyang Institute of Technology,Luoyang,Henan 471003,China)

机构地区：[1]河南科技大学车辆与交通工程学院,河南洛阳市471003 [2]洛阳理工学院机械工程学院,河南洛阳市471003

出　　处：《矿业研究与开发》2018年第10期74-79,共6页Mining Research and Development

基　　金：河南省重点科技攻关项目(142102210064)

摘　　要：为了提高振荡压路机的压实性能,考虑了车架及其以上部分水平方向的振动对振荡轮荡幅的影响,采用分析力学中的拉格朗日能量法,建立了"整机-土壤"五自由度的动力学模型,分析研究了振荡压实系统在连耦工况下的时频响应特性。以单位压实功最大为优化目标,对振荡压路机的激振频率进行了优化。研究结果表明,在压路机的实际工作中,车架及驾驶室的水平振动对振荡轮的荡幅影响不可忽略;随着被压实材料密实度的增加,振荡压路机应由低频高幅工况向高频低幅工况转换;单位最大压实功与最佳激振频率的关系曲线为振荡压路机压实效率的提高提供了理论依据。In order to improve the compaction performance of the oscillating roller, considering the effect of the horizontal vibration of the frame and above parts on the swing amplitude of the oscillating wheel, the Lagrange＇s energy method of analytical mechanics was applied to establish the dynamic model of ＇whole-soil＂ five degrees of freedom. The time-frequency response characteristics of oscillatory compacting system under continuous coupling condition were studied. Then, the excitation frequency of oscillating roller was optimized with the maximum of unit compaction work as the optimization objective. The results showed that the influence of horizontal vibration of the frame and the cab on the swing amplitude of the oscillating wheel could not be ignored in the practical work of the roller. With the increase of compactness of compacted material, the working condition of oscillating roller should be converted from low frequency and high amplitude to high frequency and low amplitude. The relationship between the unit maximum compaction work and the optimum excitation frequency provided a theoretical basis for the improvement of the compaction efficiency for the oscillating roller.

关 键 词：振荡压路机 连耦工况 建模仿真 参数优化 

分 类 号：U415.521[交通运输工程—道路与铁道工程]