摘要
根据理论分析,发现压路机压实效果,不仅与压路机的激振力有关,还受压实材料的刚度阻尼等因素影响。要实现不同条件路面的良好压实,需要压路机提供不同的工作频率和工作振幅,普通单频单幅压路机无法应对这种复杂的压实作业。多频多幅振动压路机,采用安装在振动轴上的一组偏心块组合振动来实现压实的变频变幅。利用多目标优化方法中的线性加权法对振动压路机的频率和振幅进行优化,构建压实效果最优和舒适度最佳两个目标的压路机计算模型,为多频多幅压路机在不同土壤环境下频率和振幅参数确定提供了计算依据。根据模型计算结果,利用最小二乘法设计满足条件的偏心块组。
According to the theoretical analysis,it was found that the roller compaction effect was not only related with roller vibration force,but also with the stiffness of the damping materials pressure.To realize the good compaction pavement under different conditions,the roller needed to offer the different working frequency and amplitude,since the ordinary monophonic singles roller could not cope with this kind of complex compaction homework.As much frequency vibration roller realized the the frequency range of compaction by an eccentric block combination installed on the vibration shaft.Using linear weighting method in multi-objective optimization method to optimize vibration frequency and the amplitude of the roller,and to construct the calculation model of the roller with two goals of the optimal compaction effect and the best comfort,it provides the computation basis for the parameter confirmation of multiple frequency vibration roller under different soil environment.Based on the model calculation results,the design of the least square method meets conditions of the eccentric block.
出处
《机械设计与制造》
北大核心
2013年第1期29-31,共3页
Machinery Design & Manufacture
基金
国家科技支撑计划资助项目(2011BAF11B01)
国家自然科学基金资助项目(50804108)
关键词
多频多幅
多目标优化
数据拟合
偏心块组
Much Frequency and much Amplitude
Multi-Objective Optimization
Data Fitting
Eccentric Block Group
