摘要
对加工中心电主轴整机"主轴-轴承-电动机-轴承座"等进行动力学有限元建模,并通过物理实验对整机模型进行了验证。对比有限元分析结果与物理实验结果表明:前3阶固有频率吻合程度高,误差较小;频率在3 kHz以上时,误差显著增大。通过物理实验的验证表明:建立的有限元模型在预测电主轴低阶固有频率是有效的,该分析模型对主轴的动力学响应、结构优化设计等有着重要的意义。
In this paper the dynamic modeling of motorized spindle whole-body, which is equivalent to the shaft-bearing-motor- bearing housing-system, is conducted using the finite element method and verified by physical experiments. The results indicate that the first three sets obtained by FEA coincide with those obtained by physical experiments approximately, the inaccuracy is subtle. How- ever the deviation increases considerably when the analysis frequency is higher than 3 kHz. The finite element model founded in this paper, which is of significance in dynamic respond research and optimization design,is identified by physical experiment , and is efficient for the prediction of lower set frequency.
出处
《西华大学学报（自然科学版）》
CAS
2011年第2期17-20,共4页
Journal of Xihua University:Natural Science Edition
基金
2009年国家科技重大专项(2009ZX04001-013)
关键词
电主轴整机
动力学分析
有限元建模
物理模态实验
motorized spindle whole-body
dynamics analysis
FEM
physical modal experiment
作者简介
作者简介：彭必友（1979-），男，副教授，博士，主要研究方向为先进制造／成形技术。E-mail：pengbiyou@126．com
