Title:
The Prediction of Chatter Stability in Hard Turning

dc.contributor.advisor Chen, Ye-Hwa
dc.contributor.author Park, Jong-Suh en_US
dc.contributor.committeeMember Hodges, Dewey
dc.contributor.committeeMember Kurfess, Thomas
dc.contributor.committeeMember Liang, Steven
dc.contributor.committeeMember Zhou, Chen
dc.contributor.department Mechanical Engineering en_US
dc.date.accessioned 2005-03-03T22:08:36Z
dc.date.available 2005-03-03T22:08:36Z
dc.date.issued 2004-04-12 en_US
dc.description.abstract Despite a large demand from industry, a realistic chatter modeling for hard turning has not been available due to the complexity of the problem, which is mainly caused by flank wear and nonlinearity in hard turning. This thesis attempts to develop chatter models for predicting chatter stability conditions in hard turning with the considerations of the effects of flank wear and nonlinearity. First, a linear model is developed by introducing non-uniform load distribution on a tool tip to account for the flank wear effect. Second, a nonlinear model is developed by further incorporating nonlinearity in the structure and cutting force. Third, stability analysis based on the root locus method and the describing function approach is conducted to determine a critical stability parameter. Fourth, to validate the models, a series of experiment is carried out to determine the stability limits as well as certain characteristic parameters for facing and straight turning. From these, it is shown that the nonlinear model provides more accurate predictions than the linear model, especially in the high-speed range. Furthermore, the stabilizing effect due to flank wear is confirmed through a series of experiments. Fifth, to fully account for the validity of linear and nonlinear models, an empirical model is proposed to fit in with the experimental stability limits in the full range of cutting speed. The proposed linear and nonlinear chatter models will help to improve the productivity in many manufacturing processes. In addition, chatter experimental data will be useful to develop other chatter models in hard turning. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 1384075 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/5235
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Stability en_US
dc.subject Cutting
dc.subject Nonlinearity
dc.subject Flank wear
dc.subject.lcsh Machine-tools Dynamics en_US
dc.subject.lcsh Vibration en_US
dc.subject.lcsh Turning (Lathe work) en_US
dc.title The Prediction of Chatter Stability in Hard Turning en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Chen, Ye-Hwa
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 4ccc90e1-09d2-4291-9ec5-e8dcdaa13a25
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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