摘要
基于复合材料层合理论和传递矩阵法建立一种轴系挠曲振动的预测方法。运用该方法分析并计算了CFRP重型机床传动轴系的挠曲振动固有频率。利用有限元仿真软件ABAQUS对传动轴系进行模态分析加以验证,对比传递矩阵法得到的一阶弯振转速2521r/min和简支梁模型的3072r/min可以发现,在计算复合材料轴系振动特性时,仅考虑复合材料轴管的简化方法会导致较大的误差。而推导的复合材料轴系系统动力分析的传递矩阵法能够准确的预测轴系的动态特性。
A method for predicting the flexural vibration of a shaft is established based on the theory of composite lamination and transfer matrix method.This method was used to analyze and calculate the natural frequency of flexural vibration of CFRP heavy-duty machine tool drive-line.The finite element simulation software ABAQUS was used to verify the modal analysis of the drive-line.Compared with the first-order bending vibration speed of 2521 r/min obtained by the transfer matrix method and the 3072 r/min of the simple-supported beam model,it can be found that when calculating the vibration characteristics of the composite shafting,only considering the simplified method of the composite shaft tube leads to a larger error.The transfer matrix method for dynamic analysis of composite shafting systems deduced in this paper can accurately predict the dynamic characteristics of the shafting system.
作者
文湘隆
方圆
杨沫
李文虎
WEN Xiang-long;FANG Yuan;YANG Mo;LI Wen-hu(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Hubei Wuhan430070,China)
出处
《机械设计与制造》
北大核心
2020年第11期42-44,48,共4页
Machinery Design & Manufacture
基金
湖北省重大科技创新计划项目(2014AAA005)。
