摘要
振动现象是机床设计中所面临的问题之一,它能造成加工误差,影响零件的加工精度。模态分析主要用于确定结构或机器部件的振动特性。建立床身的三维有限元模型,利用大型有限元分析软件ANSYS,对床身部件进行了模态分析,得出了床身前五阶固有频率和振型,了解床身部件的各阶振动模态的特点,对于我们研究床身部件的动态特性是十分必要的,有利于机床床身系统的整体设计。
Vibration is one of important problems in CNC machine design,which causes the manufacturing errors,and influences the machining accuracy of the part,and model analysis can calculate vibration type of a part.The paper establishes the 3D finite element model of a lathe-bed and calculates the result of vibration model analysis of it in ANSYS.The first five natural frequency and vibration models of the lathe-bed are obtained and we analyze the result,it is very essential to us to research into dynamic characteristics of the lathe-bed and design of the lathe-bed system.
出处
《机电工程技术》
2007年第1期25-27,共3页
Mechanical & Electrical Engineering Technology
关键词
模态分析
固有频率
振型
ANSYS
model analysis
natural frequency
vibration type
ANSYS
