Horizon chatter in a single-roll driving temper rolling mill system
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摘要: 在考慮平整機工作界面摩擦狀態的基礎上,建立了軋輥水平振動的非線性力學模型,分析了界面摩擦狀態的變化對軋輥水平運動的影響.應用相平面法分析了軋輥水平運動規律,并確定了粘著-滑動運動的極限環,定性地分析了軋輥水平運動的動力學特性.通過分析單輥驅動平整機水平顫振產生的條件及機理,得出了影響軋輥顫振的因素.Abstract: A nonlinear dynamic model of horizontal vibration was derived based on the analysis of friction state on rolling contact interface. The effects of the transform of friction state on the horizontal movement of a roll were discussed. Phase portrait technique was used to analyze the horizontal motion of a roll and determine a limit circle which could describe the path of sticking-sliding motion. The dynamic characteristics and mechanism of horizon chatter were analyzed. The critical parameters able to divide up the sticking-sliding motion requisition in the parameters plane were deduced.
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Key words:
- temper mill /
- single-roll drive /
- chatter /
- limit circle /
- phase portrait technique
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