机械工程学报
機械工程學報
궤계공정학보
CHINESE JOURNAL OF MECHANICAL ENGINEERING
2015年
14期
46-53
,共8页
曾令强%臧勇%郜志英%刘晓潺
曾令彊%臧勇%郜誌英%劉曉潺
증령강%장용%고지영%류효잔
整体建模%轧机%辊缝%动态轧制%耦合振动
整體建模%軋機%輥縫%動態軋製%耦閤振動
정체건모%알궤%곤봉%동태알제%우합진동
overall coupled modeling%rolling mill%roll gap spacing%rolling dynamics%coupled vibrations
轧机振动一直是制约轧制发展的重要问题。建立有效的轧机系统动力学模型是研究轧机振动问题的基础，而已有的研究在轧机系统耦合建模方面仍存在着许多不足。通过分析轧机不同类型振动产生的机理及其相互关系，建立能够表征板带轧机垂直-水平-扭转以及轧件水平颤振的耦合振动结构模型；基于Bland-Ford-Hill轧制力模型，并进一步考虑振动状态下辊缝动态变化的影响，建立动态轧制过程模型；在此基础上，将动态轧制力及动态轧制力矩作为反馈激励源，作用于轧机振动结构模型，构建全新的动态轧制过程与轧机系统结构相耦合的轧机颤振整体耦合动力学模型。通过将所建模型的仿真结果与2030冷连轧机组振动测试数据的对比，验证此模型的正确性和有效性。结果表明，轧机颤振整体耦合动力学模型能够合理表征振动过程中轧机系统结构和轧制过程的耦合关系，为深入研究轧机综合振动特性提供理论基础。
軋機振動一直是製約軋製髮展的重要問題。建立有效的軋機繫統動力學模型是研究軋機振動問題的基礎，而已有的研究在軋機繫統耦閤建模方麵仍存在著許多不足。通過分析軋機不同類型振動產生的機理及其相互關繫，建立能夠錶徵闆帶軋機垂直-水平-扭轉以及軋件水平顫振的耦閤振動結構模型；基于Bland-Ford-Hill軋製力模型，併進一步攷慮振動狀態下輥縫動態變化的影響，建立動態軋製過程模型；在此基礎上，將動態軋製力及動態軋製力矩作為反饋激勵源，作用于軋機振動結構模型，構建全新的動態軋製過程與軋機繫統結構相耦閤的軋機顫振整體耦閤動力學模型。通過將所建模型的倣真結果與2030冷連軋機組振動測試數據的對比，驗證此模型的正確性和有效性。結果錶明，軋機顫振整體耦閤動力學模型能夠閤理錶徵振動過程中軋機繫統結構和軋製過程的耦閤關繫，為深入研究軋機綜閤振動特性提供理論基礎。
알궤진동일직시제약알제발전적중요문제。건립유효적알궤계통동역학모형시연구알궤진동문제적기출，이이유적연구재알궤계통우합건모방면잉존재착허다불족。통과분석알궤불동류형진동산생적궤리급기상호관계，건립능구표정판대알궤수직-수평-뉴전이급알건수평전진적우합진동결구모형；기우Bland-Ford-Hill알제력모형，병진일보고필진동상태하곤봉동태변화적영향，건립동태알제과정모형；재차기출상，장동태알제력급동태알제력구작위반궤격려원，작용우알궤진동결구모형，구건전신적동태알제과정여알궤계통결구상우합적알궤전진정체우합동역학모형。통과장소건모형적방진결과여2030랭련알궤조진동측시수거적대비，험증차모형적정학성화유효성。결과표명，알궤전진정체우합동역학모형능구합리표정진동과정중알궤계통결구화알제과정적우합관계，위심입연구알궤종합진동특성제공이론기출。
Mill vibration has been an important issue restricting the development of strip rolling. An effective mill system dynamics model is the basis for studying the mill vibration. But the existing research still has many deficiencies in coupled modeling of the rolling mill. By the analysis of the generating mechanism of different types of vibration and their internal relationship, a coupling vibration structure model is established, in which the vertical vibration, horizontal vibration, torsional vibration and the chatter of rolled piece can be well indicated. In addition, based on the Bland-Ford-Hill rolling force model and considered the dynamic changes of roll gap spacing in the state of vibration, a dynamic rolling process model is formulated. On this basis, taking the dynamic variations of rolling force and rolling torque as the feedback excitation to construct the new overall coupled dynamic model, which can reflect the coupling relationship between the rolling process model and the coupling vibration structure model. The correctness and validity of the overall coupled dynamic model are verified by using the vibration test data of 2030 cold rolling mill. The results show that overall coupled dynamic model can reasonably characterize the coupling relationship between the mill structure and the rolling process. It may be helpful for further study on the coupled vibration characteristics of the rolling mill.
