Analysis of asymmetrical sheet rolling by a genetic algorithm

Kadkhodaei, Mahmoud; Salimi, M.; Poursina, Mehrdad

doi:10.1016/j.ijmecsci.2006.09.021

Cited by 26 publications

(10 citation statements)

References 25 publications

(33 reference statements)

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“…So v 1 cos n1 and v 2 cos n2 can be used to express the roll's horizontal velocities 1 , 2 variable angles of contact of the upper and lower rolls, respectively…”

Section: Appendixmentioning

confidence: 99%

Analysis of snake rolling force and torque with changes of thickness depending on unequal roll radii based on pure aluminum experiments

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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An analytical model, in which unequal radii are replaced with an equivalent radius, is creatively proposed to predict the rolling force and roll torque in general case of snake rolling. With the model, the effects of roll radius ratio, roll speed ratio, offset distance between rolls, reduction and friction coefficient on rolling forces in hot snake rolling of aluminum alloy are obtained. Also, the thicknesses of slab are investigated in different zones, which firstly propose the changes of thickness during snake rolling. Owing to the good agreement with the results measured in experiments and calculated by finite element method and other traditional models, those calculated by the proposed model are verified. The proposed model can be used to predict more accurate theoretical results for snake rolling force and torque.

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“…So v 1 cos n1 and v 2 cos n2 can be used to express the roll's horizontal velocities 1 , 2 variable angles of contact of the upper and lower rolls, respectively…”

Section: Appendixmentioning

confidence: 99%

Analysis of snake rolling force and torque with changes of thickness depending on unequal roll radii based on pure aluminum experiments

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The distributions of the shear stress from Prantl's solution 16,17) The shear stress in vertical plane can be assumed as linearly distributed and on surfaces the maximum values m1k1 and m2k2 are reached, so Fig. 3(a) can yield the following equation.…”

Section: Vertical Shear Stressmentioning

confidence: 99%

Analysis of Asymmetrical Rolling of Unbonded Clad Sheet by Slab Method Considering Vertical Shear Stress

2015

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A novel analytical approach for asymmetrical rolling of two unbonded clad sheet layers is creatively proposed to calculate the rolling force and torque. In this new approach, the vertical stresses which make calculation results be agree better with results measured in experiments are first applied in clad sheet asymmetrical rolling process. During varying of different roll speeds, roll radii and yield stress ratio of the two materials as well as different friction coefficients, two neutral points and one bonding point are obtained, then the plastic deformation region is divided into four zones. The neutral points, the bonding point, distribution of the rolling stress, the horizontal stress of the whole clad sheet and clad thickness ratio at the exit can be calculated by the present solution easily and rapidly. In order to verify the accurateness of the new model, the results received have been compared with those calculated by other traditional models as well as measured in the experiments conducted by previous scholars where the effects of vertical shear stress were ignored. As it can be seen, the maximum of errors is less than 9.8%.

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“…Consequently to have horizontal entry of the sheet, it is needed to impose extra techniques that warranted horizontal entry of the sheet into the roll gap. Kadkhoadei et al (2007) used a genetic algorithm to calculate deflection and the angle of rotation in the ingoing sheet [5]. These models were able to evaluate the rolling force and torque.…”

Section: Introductionmentioning

confidence: 99%

Slab analysis of asymmetrical sheet rolling

Zhang¹,

Meng²,

Wang³

et al. 2015

Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials

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An analytical solution based on slab method is first proposed to calculate the rolling force and rolling torque in asymmetrical sheet rolling where the work roll radii, their speeds, and the interfacial frictions may be different. In the solution, the shear stress acting along the vertical sides of each slab is taken into account. To verify the validity of the proposed analytical solution, the analytical rolling force and torque were compared with experimental and analytical results of other investigators. Very good agreements are found. By this proposed analytical solution, it is noted that the calculation time and computer expense are saved, and the characteristics of asymmetrical cold and hot sheet rolling are obtained easily and rapidly.

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Analysis of asymmetrical sheet rolling by a genetic algorithm

Cited by 26 publications

References 25 publications

Analysis of snake rolling force and torque with changes of thickness depending on unequal roll radii based on pure aluminum experiments

Analysis of snake rolling force and torque with changes of thickness depending on unequal roll radii based on pure aluminum experiments

Analysis of Asymmetrical Rolling of Unbonded Clad Sheet by Slab Method Considering Vertical Shear Stress

Slab analysis of asymmetrical sheet rolling

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