The mechanical parameters modeling of heavy steel plate snake/gradient temperature rolling with the same roll diameters

Jiang, Lianyun; Zhang, Tao; Yuan, Guo; Huang, Jian; Wei, Yao-Yu; Li, Heng; Wang, Ping

doi:10.1051/metal/2020019

Cited by 12 publications

(4 citation statements)

References 24 publications

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“…For controlling rolling parameters and predicting curvature, many scholars have developed some analytical models by the slab method, such as curvature and strain. In order to compute the plate curvature, Jiang et al [14][15] set up a theoretical model using the slab method. Afrouz et al [16] researched the mechanical parameters and curvature for asymmetric rolling of the cold rolled strip with uneven shear stresses using the slab method.…”

Section: Introductionmentioning

confidence: 99%

The curvature modeling for the double layered clad plate by asymmetric rolling with different diameters

Jiang,

Liang,

Chen

et al. 2024

Int J Adv Manuf Technol

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The plate curvature model plays an important role in the prediction and control of the double layered clad plate. However, there is currently no such a fast, precise and stable plate curvature model, and the actual shear stress on the cross section is uneven distributed actually which is conflicted with the uniform assumption of the traditional model. Based on the non-uniform distribution, this paper innovatively presents a theoretical plate curvature model using the flow function method and the upper bound method together without the complex stress analysis. The inlet boundary conditions of the model are more accurate modified and optimized as nonlinear functions. The velocity field and strain rate field were built depending on the flow function field. The plastic deformation, shear and friction power were developed by the five-node Gauss-Legendre quadrature method. The post-rolling strain model was obtained by integrating the positive strain rate and shear strain rate with time. The curvature model was constructed by calculating the curvature due to linear and shear strain differences. To demonstrate the validity of the theoretical model, the experiments and the simulation were conducted. The results showed that the relative deviation of the numerical values va and vb is less than 10.0%, accounting for 95.1% and 95.4%, compared with theoretical values. The shear power difference between layer a and b is the main reason for bending. The bending phenomenon appeared the outlet section of the plate, and the velocity difference provided the shear stress required for bending. The increase of the diameter ratios lead to the increase of the shear strain difference and shear power, and it leads to an increase in the total curvature. To certify the precision of the curvature model, the deviation of the theoretical peak curvature values is 12.05%, *

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Section: Introductionmentioning

confidence: 99%

The curvature modeling for the double layered clad plate by asymmetric rolling with different diameters

Jiang,

Liang,

Chen

et al. 2024

Int J Adv Manuf Technol

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“…Aboutorabi et al [14] represented a theoretical model to calculate the curvature of the thick plate based on the slab method. Wang et al [15] and Jiang et al [16][17][18][19][20] established several analytical models to calculate the curvature of the thick plate and the rolling force of snake rolling. Meng et al [21] represented a model for calculating the rolling force of snake rolling based on the slab method.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Exit Thickness and Its Compensation after Snake Rolling of Aluminum Alloy Thick Plate

Wang

Wei-dong

2022

Advances in Materials Science and Engineering

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Asymmetrical deformation zone of the snake rolling process results in complex metal flow and unknown edge of the deformation zone. In this study, three assumptions about the location of exit thickness appear and the exit thickness is calculated by those three assumptions. By comparing the exit thickness obtained by formulas and the finite element method, one formula with high accuracy is verified and the plastic deformation of the thick plate under several snake rolling conditions is obtained. The results show that through comparing the minimum thickness in different assumptions, the exit of the plastic deformation zone is located at the midpoint of the line between two work rolls’ axis and the exit thickness is approximately equal to the length of the line which includes that midpoint and locates between the two work rolls in the vertical direction. Then with the increasing offset distance, the exit thickness increases and that leads to less deformation inside the plate. For maintaining the exit thickness equal to the preset value, an exit thickness compensation model is established according to the geometry of the deformation zone and verified by the results of simulations.

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“…Many scholars have also established some analytic models based on slab method, upper bound method and energy method, such as the strain, rolling force and so on, to improve the calculation speed of rolling process parameters. Jiang et al [9] modified Von-Mises yield criterion and calculated mechanical parameters of the snake rolling process by the slab method.…”

Section: Introductionmentioning

confidence: 99%

The central strain analytical modeling and analysis for the plate rolling process

Jiang

Wei

2021

Int J Adv Manuf Technol

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The strain after rolling plays an important role in the prediction of the microstructure and properties and plate deformation permeability. So it is necessary to establish a more accurate theoretical strain model for the rolling process. This paper studies the modeling method of the equivalent strain based on the upper bound principle and stream function method. The rolling deformation region is divided into three zones (inlet rigid zone, plastic zone, and outlet rigid zone) according to the kinematics. The boundary conditions of adjacent deformation zones are modified according to the characteristics of each deformation zone. A near-real kinematics admissible velocity field is established by the stream function method on this basis. The geometric boundary conditions of the deformation region are obtained. The deformation power, friction power and velocity discontinuous power are calculated according to the redefined geometric boundary conditions. On this basis, the generalized shear strain rate intensity is calculated according to the minimum energy principle. Finally, the equivalent strain model after rolling is obtained by integrating the generalized shear strain rate in time. The plate rolling experiments of AA1060 and the numerical simulations are carried out with different rolling reductions to verify the analytic model precision of the equivalent strain. The results show that the minimum and maximum relative equivalent strain deviation between the analytic model and the experiment is 0.52% and 9.96%, respectively. The numerical calculation and experimental results show that the model can accurately calculate the strain along the plate thickness. This model can provide an important reference for the rolling process setup and the microstructure and properties prediction.

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The mechanical parameters modeling of heavy steel plate snake/gradient temperature rolling with the same roll diameters

Cited by 12 publications

References 24 publications

The curvature modeling for the double layered clad plate by asymmetric rolling with different diameters

The curvature modeling for the double layered clad plate by asymmetric rolling with different diameters

Prediction of Exit Thickness and Its Compensation after Snake Rolling of Aluminum Alloy Thick Plate

The central strain analytical modeling and analysis for the plate rolling process

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