NONLINEAR REGENERATIVE CHATTER IN TURNING


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Successful machining operations depend upon the dynamic relationship between the workpiece and cutting tool. Under certain circumstances, the motion of the tool against the workpiece can produce a self-exciting system, resulting in large amplitude of vibrations. This vibration, or chatter, adversely affects the life of the tool, the quality of the cut, and the speed at which operations may be performed
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Understanding and properly controlling the interaction of tool/workpiece dynamics to control chatter can yield reduced costs and higher overall productivity. This requires the ability to predict chatter behavior, allowing guidelines to be formed to simplify the process of selecting appropriate machining parameters. A lot of research efforts towards the understanding and the controlling of chatter have been done for the past fifty years. Early on, chatter was thought as a result of a negative damping effect


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