混凝土泵车臂架系统振动分析与实验

摘要/Abstract

摘要：

应用解析法对52m长混凝土泵车的五节臂系统进行振动特性分析。采用拉格朗日第二类方程和假设模态法建立了臂架系统的柔性多体动力学方程，基于建立的柔性模型对臂架系统进行了模态分析，并应用MATLAB软件对模态进行了数值求解,得出了臂架系统的前10阶固有频率及振型，并分析了不同的臂架参数对臂架系统固有频率的影响，最后通过现场测试实验对理论固有频率进行了验证。研究结果为臂架结构的进一步优化及系统振动的控制提供了理论依据。

关键词: 混凝土泵车臂架系统, 柔性多体动力学, 模态分析, 固有频率

Abstract:

An analytic method was applied to study the vibration performance of the 52-meter-long five-boom system of truck mounted concrete pump. The combination of Lagrange's equations of the second kind and assumed mode method was utilized to establish the flexible multi-body dynamics equation of the boom system. Based on the dynamic model, modal analysis was implemented and numerically solved by MATLAB, and the first ten nature frequencies and modes of vibration of the boom system were acquired. The impacts of the boom parameters on nature frequencies of the boom system were also analyzed. In addition, vibration experiments on a real boom system were implemented to verify the theoretical nature frequency. The research results can provide basis for the improvement of the boom structure and the further research of vibration control.

Key words: boom system of truck mounted concrete pump, flexible multi-body dynamics, modal analysis, natural frequency

中图分类号:

刘荣升, 李慧, 高英杰, 杨育林. 混凝土泵车臂架系统振动分析与实验[J]. 中国机械工程, 2015, 26(15): 2125-2129.

Liu Rongsheng, Li Hui, Gao Yingjie, Yang Yulin. Vibration Analysis and Experimental Test of a Boom System of Truck Mounted Concrete Pump[J]. China Mechanical Engineering, 2015, 26(15): 2125-2129.

参考文献

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