Uncharted islands of chatter instability in milling
Uncharted islands of chatter instability in milling
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DOI：
10.1016/j.ijmachtools.2007.06.009
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发表时间：
2008
影响因子：
14
通讯作者：
B. Patel;B. Mann;K. Young
中科院分区：
文献类型：
--
作者：
B. Patel;B. Mann;K. Young
本文提供了确凿的证据，孤立的颤振岛屿可以存在于铣削过程中。研究表明，这些岛是由工具螺旋角引起的，并用于分离倍周期和准周期行为的区域。建模工作开发了一个分析力模型与三个分段连续的切割区域，描述螺旋角工具。理论结果研究了几种不同的径向浸入和螺旋角的渐近稳定性趋势。此外，新的结果显示，通过实施的时间有限元分析方法的延迟方程的状态空间模型的形式写的。一系列的实验测试证实了孤岛现象的预测是有效的。
This paper provides conclusive evidence that isolated islands of chatter vibration can exist in milling processes. Investigations show these islands are induced by the tool helix angle and act to separate regions of period-doubling and quasi-periodic behavior. Modeling efforts develop an analytical force model with three piecewise continuous regions of cutting that describe helix angle tools. Theoretical results examine the asymptotic stability trends for several different radial immersions and helix angles. In addition, new results are shown through the implementation of a temporal finite element analysis approach for delay equations written in the form of a state space model. Predictions are validated by a series of experimental tests that confirm the isolated island phenomenon.