智能化振动压路机动力学建模及参数优化

发布时间：2018-01-09 08:36

本文关键词：智能化振动压路机动力学建模及参数优化　出处：《机械科学与技术》2014年01期 　论文类型：期刊论文

【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-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。
[Abstract]:In order to make the intelligent vibratory roller carry out the most effective compaction under different compaction stages, the dynamic model of "vibration wheel-soil" with four degrees of freedom under the condition of continuous coupling is established. The relationship between the different working parameters and the displacement of the vibration wheel and the frame is obtained. By using the calculated simulation parameters, the excitation frequency and the exciting angle are obtained when the compaction degree is the largest and the vibration jump is not caused. It provides a numerical basis for the optimal selection of the parameters of the vibratory roller in each compaction stage. The data show that the parameters change with the change of the soil condition. When the exciting frequency of the roller is kept in the range of 1.291.39 times of the second order natural frequency of the soil, the compaction degree of the soil reaches the maximum value.
【作者单位】：湘潭大学机械工程学院;
【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
【分类号】：U415.521
【正文快照】： 随着微电子技术、自动控制技术、电子信息技术和计算机技术的迅速发展,振动压路机进入到了一个新的发展时期[1-2]。压路机在作业时被压实材料特性是随压实遍数和压路机工作参数取值复杂而随机变化的,而被压实材料特性的变化反过来又对振动压路机工作参数产生影响。为了达到被

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