Prediction of machining chatter in milling based on dynamic FEM simulations of chip formation
Prediction of machining chatter in milling based on dynamic FEM simulations of chip formation作者机构：Precision Manufacturing Laboratory Department of Mechanical Engineering Sharif University of TechnologyAzadi Avenue Tehran Iran
出 版 物：《Advances in Manufacturing》 (先进制造进展（英文版）)
年 卷 期：2018年第6卷第3期
页 面：334-344页
核心收录：
学科分类：0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0811[工学-控制科学与工程] 0801[工学-力学（可授工学、理学学位）]
主 题：Machining chatter Milling Finite elementmodel (FEM) simulation Feed rate
摘 要：Chatter vibration is a major obstacle inachieveing increased machining performance. In thisresearch, a finite element model of chip formation in a 2Dmilling process is used to predict the occurrence of chattervibrations, and to investigate the effects of variousmachining parameters on this phenomenon. The dynamicproperties of the machine tool at the tool tip are obtainedbased on experimental modal analysis, and are used in themodel as the cutter dynamics. The model allows for thenatural development of vibration as the result of the chip-tool engagement, and accounts for various phenomena thatoccur at the chip-tool interface ultimately leading tostable or unstable cutting. The model was used todemonstrate the effects of the machining parameters, suchas the axial depth of cut, radial immersion, and feed rate,on the occurrence of chatter. Additionally, the phenomenonof jumping out of the cut region could be observed in thismodel and its effect on the chatter process is *** numerical model is verified based on comparisons withexperimental results.
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