[1]马学良,孙祖望,杨东来..振荡压实机动力学模型的建立及幅频特性研究[J].郑州大学学报(工学版),2009,30(01):156-160.[doi:10.3969/j.issn.1671-6833.2009.01.035]
　Ma Xueliang,Sun Zuwang,Yang Donglai.Establishment of dynamic model of oscillating compactor and study of amplitude-frequency characteristics[J].Journal of Zhengzhou University (Engineering Science),2009,30(01):156-160.[doi:10.3969/j.issn.1671-6833.2009.01.035]
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振荡压实机动力学模型的建立及幅频特性研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
30卷
期数:
2009年01期
页码:
156-160
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Establishment of dynamic model of oscillating compactor and study of amplitude-frequency characteristics
作者:
马学良; 孙祖望; 杨东来.
长安大学,工程机械学院,陕西,西安,710064, 广东省长大公路工程有限公司,广东,广州,511431
Author(s):
Ma Xueliang; Sun Zuwang; Yang Donglai
关键词:
幅频特性;  动力学模型;  刚度和阻尼;  计算机仿真;  振荡压实
Keywords:
DOI:
10.3969/j.issn.1671-6833.2009.01.035
文献标志码:
A
摘要:
在确立了振荡压实动力学模型的基础上,对振荡压实过程中压路机的幅频特性进行了大量现场试验,提出了动力学模型中被碾压材料的刚度和阻尼的动态识别方法.通过对动力学模型的计算机仿真试验来模拟实际试验曲线,对不同的刚度和阻尼用试凑法求取拟合曲线,从而可确定出刚度和阻尼数值.研究结果表明,实际幅频特性的变化趋势凸显了振荡轮与热沥青混合料相互作用理论模型中二个自由度系统的特征,利用动态识别方法所确定的刚度和阻尼与压实过程中被碾压材料的实际变化趋势相近.
Abstract:
Based on the establishment of the dynamic model of oscillating compaction, a large number of field tests were carried out on the amplitude-frequency characteristics of the roller during the oscillation compaction process, and a dynamic identification method for the stiffness and damping of the compacted material in the dynamic model was proposed. The actual test curve is simulated by computer simulation test of the dynamic model, and the fitting curve is obtained by the trial method for different stiffness and damping, so that the stiffness and damping values can be determined. The results show that the change trend of the actual amplitude-frequency characteristics highlights the characteristics of the two degree-of-freedom systems in the theoretical model of the interaction between the oscillating wheel and the hot asphalt mixture, and the stiffness and damping determined by the dynamic identification method are similar to the actual change trend of the compacted material during the compaction process.

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更新日期/Last Update: 1900-01-01