Coupling dynamic model of chatter for cold rolling

Yang, Xu; Tong, Chaonan; Yue, Guang-feng; Meng, Jian-ji

doi:10.1016/s1006-706x(10)60193-8

Cited by 37 publications

(27 citation statements)

References 6 publications

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“…By increasing the rolling speed, it is expected that the system goes to instability. [1][2][3][4][5][6][7][8][9][10][11][12] To investigate the effect of rolling speed three different cases were examined. Figure 7 shows the results of the simulation model in the first case.…”

Section: Rolling Vibrationsmentioning

confidence: 99%

“…1) It has also been found that as the rolling speed is increased the system goes to instability. [1][2][3][4][5][6][7][8][9][10][11][12] As the need for low-cost and high-quality products increases, prevention of chatter phenomenon becomes an important job in rolling industry. To overcome this phenomenon a deep understanding of the cause of chatter is required.…”

Section: Introductionmentioning

confidence: 99%

“…1,5,9,[11][12][13][14][15][16] Consequently, a large number of mathematical models for the rolling process have been established with various degrees of simplification. Similarly some researchers reported experimental findings on rolling chatter.…”

Section: Introductionmentioning

confidence: 99%

“…Their research activity was aimed to develop a method suitable for modeling the cold rolling chatter in cluster mills. Xu et al 11) formulated a single-stand chatter model for cold rolling by coupling the dynamic rolling process model, the roll stand structure model and the hydraulic servo system model. They linearized the model and represented it as a transfer matrix in a space state.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental Investigations and ALE Finite Element Method Analysis of Chatter in Cold Strip Rolling

et al. 2012

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Chatter is the most important limitation in high speed rolling of thin strips in modern industrial cold rolling mills. To study chatter in rolling, it is necessary to set up models for the rolling process as well as the mill stand. Existing models of the rolling process are analytic and are based on many simplifying assumptions. In current work Arbitrary Lagrangian Eulerian (ALE) finite element method is utilized for the first time to model the chatter vibrations in rolling, which relaxes many of these assumptions. The model has the benefit of mass translation to computational region by using ALE technique, which tremendously reduces huge computational requirements of the common Lagrangian models. The presented model is updated for simulating the chatter mechanism by means of some online velocity sensors and signal filtering method in applying the ALE boundary conditions. Results of the finite element model were compared with the experimental measurements obtained from a full scale industrial mill. Two main chattering characteristics, i.e., the critical rolling speed and the chatter frequency, obtained from the simulation program were found to be in good agreement with that of the experimental measurements.

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Section: Rolling Vibrationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Investigations and ALE Finite Element Method Analysis of Chatter in Cold Strip Rolling

et al. 2012

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“…Many researchers have mentioned that lubrication is one of the basic factors incurring chatter. [3][4][5][6] Due to the complexity of the problem, however, most of them have used simple friction models in their analysis, [7][8][9][10] and only very few researches have described how chatter occurs through unsteady lubrication phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Development of a Rolling Chatter Model Considering Unsteady Lubrication

2014

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Chatter, limiting the rolling speed for thin steel strips, has been identified as a serious limitation in increasing the efficiency of the cold rolling process. Many experimental investigations have led to the point that lubrication is one of the effective factors causing chatter. In this article, a new chatter model of the cold strip rolling with consideration of unsteady lubrication is proposed. The limiting shear stress concept and the variation of the lubricant viscosity with pressure are considered in this model. The results of the simulation are verified by comparing to experimental data. Also, a parametric study on the effect of some of the major parameters of rolling lubricant on the chatter critical speed is conducted. The results show that under the operating conditions of this paper, the limiting shear stress is an effective parameter.

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Modeling and vertical torsional coupling vibration control of the rolling mill with full state constraints

Qian

Chen

et al. 2022

Intl J Robust & Nonlinear

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This article establishes a mechanical-electrical-hydraulic vertical torsional coupling vibration mathematical model, and investigates its vibration suppression control strategy with time varying full state constraints for the rolling mill vertical torsional coupling vibration system. Firstly, the mechanical-electrical-hydraulic vertical torsional coupling vibration nonlinear model is developed using dynamic theory, which takes into account nonlinear damping, nonlinear rolling force and the coupling relationship between the vertical vibration system and the torsional vibration system. Then, nonlinear constraint transformation functions and coordinate transformations are implemented to remove the feasibility condition in handling the full state constraints problem, and neural networks are used to approximate unknown nonlinear functions. Furthermore, the vibration suppression control algorithm of the mechanical-electrical-hydraulic vertical torsional coupling system is designed with the specific sequence backstepping method and dynamic surface control technique, which can resolve the problem of nesting in the controller design process. Finally, the effective of the proposed method on vibration suppression is verified by the simulation.

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Coupling dynamic model of chatter for cold rolling

Cited by 37 publications

References 6 publications

Experimental Investigations and ALE Finite Element Method Analysis of Chatter in Cold Strip Rolling

Experimental Investigations and ALE Finite Element Method Analysis of Chatter in Cold Strip Rolling

Development of a Rolling Chatter Model Considering Unsteady Lubrication

Modeling and vertical torsional coupling vibration control of the rolling mill with full state constraints

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