摘要
为了能够使智能化振动压路机在不同的压实阶段下进行最有效的压实作业，通过建立连耦工况下“振动轮一土体”四自由度动力学模型，分析得到了不同工作参数与振动轮及机架位移之间的关系，采用计算得到的模拟参数进行优化，得到了压实度最大且不引起跳振时的激振频率和激振角度，为振动压路机在各压实阶段下参数的优选提供数值依据。数据表明：随着土体状况的变化，压路机的激振频率保持在土体2阶固有频率的1．29—1．39倍范围内作业时．土体压实度达到最大值。
For the purpose of making the most effective compacting operation of intelligent vibratory roller under dif ferent compaction stages, this paper analyzes the relationship between the vibrating wheel, rack displacement and different parameters, through establishing the fourdegree of freedom dynamic model of vibrating wheelsoil body under the coupling operating condition. Besides, by optimizing the calculated parameters, the best vibration fre quency and vibration angle are obtained so that the compacting is the biggest and also does not cause jumping vibra tion, which provides the numerical basis for the parameter optimization of intelligent vibratory roller under different compaction stages. The result indicates that the degree of soil body compactness will reach maximum when the vi bration frequency of vibratory roller keeps in the range of 1.29 1.39 times of soil body＇s second order frequency.
出处
《机械科学与技术》
CSCD
北大核心
2014年第1期27-31,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(50905151)
湖南省自然科学基金项目(14JJ5028)
湖南省教育厅科学研究优秀青年项目(13B115)资助
关键词
振动压路机
压实度
激振频率
激振角度
参数优化
artificial intelligence
calculations
computer simulation
constrained optimization
damping
degrees of freedom （mechanics）
efficiency
mathematical models
MATLAB
matrix algebra
natural fre- quencies
optimization
rollers croadbuilding machinery
vibrations （mechanical）
vibratory roller
compactedness
vibration angle
vibration frequency
parameter optimization
