Development of Computational Models for Coiling Process with the Belt Wrapper

Park, Yonghui; Park, Hyunchul

doi:10.1007/s11663-016-0733-7

Cited by 2 publications

(6 citation statements)

References 7 publications

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“…When the boundary conditions of the strip nodes are removed at the end of the free and tension on step, the strip coil has spring back effect that raises the expansion of the strip coil. The spring back effect is extreme when σ is not applied to the strip before the belt wrapper is removed [13]. If σ fails to stop the spring back effect, the coil slip and come untied ( Figure 7).…”

Section: Resultsmentioning

confidence: 99%

“…The initial coiling is operated with the belt wrapper, sleeve, and strip ( Fig. 1) [13]. As the belt wrapper compresses the outside of the strip and rotates with the sleeve at the same direction, the strip is coiled about 2~3 turns between the sleeve and belt wrapper.…”

Section: System Modelling and Codementioning

confidence: 99%

“…The difference Δx between the initial x coordinate xini and the final x coordinate xlater of the right end of the strip. Table 1 is the list of design variables and operating conditions to simulate the initial coiling model [13]. To find out the system performance and sensitivity according to parameter, the parameter should be varied with different MATLAB code and ABAQUS input file.…”

Section: Simulation Processmentioning

confidence: 99%

“…As rd increases, the spring back effect also increases, so the system needs high σ to avoid the coil from the slippage. The other method is applying σ to the strip before the belt wrapper is removed [13]. To quantify the initial coiling, the system can measure small rd, because the strip is steel and σcri changes from 2.5 MPa to 20 MPa when rd changes from 0 m to 0.00006 m. Fig.…”

Section: The Variation Of the Coil Slippage According To σ Under The mentioning

confidence: 99%

“…This limitation can be solved with a computational approach such as the finite element method [10][11][12]. Recently, our research group has presented the finite element model and the analytical model to calculate stress distribution during the initial coiling and to find out whether the coil comes untied or not [13,14]. By using these models, a parametric study regarding the magnitude of the compression by the belt wrapper can be carried out easily.…”

Section: Introductionmentioning

confidence: 99%

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Quantification of coil slippage during initial coiling with belt wrapper

Park¹,

Park²

2017

Int. J. Automot. Mech. Eng.

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The finite element model and mathematical model for the coiling process with the belt wrapper have been developed by simplifying the belt wrapper to copy the strip head end positioning on free tension reel shortly, known as the initial coiling. The models have tried to quantify the coil slippage that makes a scratch on the coil. However, it is hard to compare the models to the real operation due to some assumptions. Moreover, computations is increased dramatically if the model includes the real operation such as non-linear property of the belt wrapper. This study suggests new modelling approach without the belt wrapper to quantify the coil slippage according the compression on the coil. Instead of the belt wrapper, all nodes of the strip are controlled by specific x-y displacements as the belt wrapper compresses the strip coil. Different x-y displacements of each node can change the magnitude of the compression by the belt wrapper. A finite element model of the initial coiling was simulated by the modelling approach and Model Change technique in ABAQUS, and discontinuous processes including removal of the belt wrapper and the application of coiling tension, σ are proceeded in consecutive order. By doing parametric analysis regarding the radial deformation of the coil by the belt wrapper, rd and σ, the coil slippage happens frequently when σ is below critical value or when rd is large. This phenomenon is similar to the spring back, so σ should be high or should be applied before the belt wrapper is removed. This indicates that, rd should be manipulated carefully because the coil slippage happens as rd increases. Besides the initial coiling, the modelling approach can be applied to other problems that need many computations such as the 300 layers of strip lamination.

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Section: Resultsmentioning

confidence: 99%

Section: System Modelling and Codementioning

confidence: 99%

Section: Simulation Processmentioning

confidence: 99%

Section: The Variation Of the Coil Slippage According To σ Under The mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quantification of coil slippage during initial coiling with belt wrapper

Park¹,

Park²

2017

Int. J. Automot. Mech. Eng.

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Efficient Finite Element Simulation of Cold Rolled Strip Coiling Process Considering Additional Contact Deformation between Layers

Dai,

Liang,

Qiu

et al. 2024

ISIJ Int.

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When analyzing the strip coiling process, the finite element (FE) method is closer to the actual working conditions compared to the analytical method. However, due to the large number of strip elements and contact elements, it often leads to problems such as long-time consumption and nonconvergence. Meanwhile, traditional FE methods are still unable to solve the problem of additional contact deformation between layers. Therefore, in order to overcome the shortcomings of the above methods, the FE software MSC Marc is used to establish a strip coiling model. The distribution pattern of interlayer friction and contact stress are analyzed to propose a new step-by-step bonding FE model, which greatly reduces the computing time. Through laminated compression experiments, the variation curve between additional contact deformation and pressure is obtained.The curve is introduced into the gasket elements to consider the additional contact deformation between the layers, and the effect of additional contact deformation between the layers on the stress of the coil and the pressure on the mandrel is studied. Finally, the analytical solution is compared with the FE solution proposed in this paper, and the errors generated by the analytical method are analyzed.

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Development of Computational Models for Coiling Process with the Belt Wrapper

Cited by 2 publications

References 7 publications

Quantification of coil slippage during initial coiling with belt wrapper

Quantification of coil slippage during initial coiling with belt wrapper

Efficient Finite Element Simulation of Cold Rolled Strip Coiling Process Considering Additional Contact Deformation between Layers

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