Analysis of sandwich rolling with two different thicknesses outer layers based on slab method

Wang, H.Y.; Li, X.; Sun, Jie; Wang, Z.H.; Zhao, Dewen; Zhang, D.H.

doi:10.1016/j.ijmecsci.2015.12.021

Cited by 27 publications

(7 citation statements)

References 20 publications

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“…Integrating equation (13) with respect to x, the solution of the differential equation can be obtained as…”

Section: Slab Ii-ivmentioning

confidence: 99%

“…In the earlier study, the slab method is mainly used in the flat rolling. [12][13][14] Hwang and Tzou 15 proposed the slab method to establish analytical models for asymmetrical hot strip rolling and then studied asymmetrical cold rolling of clad sheet, assuming even normal stress and Coulomb friction. 16 Salimi and Kadkhodaei 17 used slab method to study asymmetrical sheet rolling process considering uneven normal and shear stresses, and friction shear stress was considered in evaluating the yield condition.…”

Section: Introductionmentioning

confidence: 99%

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A fast calculation method of large-cylinder asymmetrical rolling force considering shear effect

Chen

et al. 2019

Advances in Mechanical Engineering

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An analytical model for large-cylinder asymmetrical rolling is proposed based on an improved slab method, which can predict the rolling force more quickly. In this method, uneven normal and shear stresses acting on the vertical side are supposed. In the solution, the upper and lower contact lengths are different, and the roll gap is divided into four slabs. Moreover, the effects of the rolling parameters such as roll speed ratio, roll radius, exit thickness, and radius of cylinder on the rolling force and cross-shear zone ratio are investigated. The cross-shear zone ratio, which means the shear effect, is a key parameter in reducing rolling force and microstructure refinement. This method is conducted with the experimental and finite element verification, and good agreement has been found. It should be noted that the calculation result can be obtained rapidly and easily by this proposed model. Therefore, the present model is suitable for online application.

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“…Integrating equation (13) with respect to x, the solution of the differential equation can be obtained as…”

Section: Slab Ii-ivmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A fast calculation method of large-cylinder asymmetrical rolling force considering shear effect

Chen

et al. 2019

Advances in Mechanical Engineering

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“…One is that the initial materials are unbonded before rolling. The experiments on sandwich sheet rolling were conducted by Wang et al [1]. In his experiments, the sandwich sheets were rolled.…”

Section: Unbonded Sheetsmentioning

confidence: 99%

Analysis of unbonded sandwich rolling defected length of the head based on experiments with aluminum and copper

Wang

Sun

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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In this paper, sandwich rolling with symmetrical thickness and materials is intensively studied. The inner metal is out of touch with both upper and lower rolls in the sandwich sheets, and all the forces are delivered from upper and lower sheets. This special character makes the relative slip distance and elongation distance appear. Then, the defected length is formed during the sandwich rolling. It verifies that the point where both inner and outer metals have the same velocity is also the point where the two metals are both deformed. Slab method is first applied in predicting the defected length of the sandwich sheets. Sandwich rolling experiments with aluminum and copper are conducted. The results obtained in this paper are also compared with those measured in experiments and calculated by stream function model recorded in references. So the model can be used in the real work conditions. It is helpful to find the best shearing position in the head of the sandwich sheets. The cost of materials is reduced based on the present model. When sheets are rolled in continual rolling passes, the defected length can be more important and serious. Specifically, if the sheets are wide, expensive and multilayer, the shearing position can be more significant to the industrial application.

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“…Wang et al used slab method to research many asymmetrical rolling processes, such as asymmetrical rolling [18], asymmetric layer cladding rolling [19,20] and snake rolling [21]. In order to analyze rolling of blade, the multiplane slab method is used in this paper.…”

Section: Introductionmentioning

confidence: 99%

Research on rolling force and stress during rolling process of blade with complex surface based on multi-plane slab method

Kong

Jiang

Liang

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The blade with complex surface is an important component in aircraft engines. Since manufacturing of the blade should be not only precise but also efficient, cold rolling is chosen to be a good way to realize this process. Though the rolling process of plate is researched well during these years, that of the blade is still not studied in detail. Especially, as the main parameters of plastic deformation, the rolling forces and stresses should be researched carefully. In order to analyze rolling process of the blade with complex surface, an analytical method with multi-planes is presented in three zones one by one. Based on the multi-plane slab method, both rolling force and stress distributions are received. Then simulations are also used to verify the analytical results. At last, the multi-plane analytical model and method presented in this paper can be used to strongly support the forming of blade. This multi-plane slab method can be also used to analyze other forming processing technologies for complex surfaces. Keyword Multi-plane analytical model • Simulation • Blade rolling • Rolling force • Stress distribution List of symbols k Shear yield stress of blade, k = s ∕ √ 3 m Friction factors on the surfaces between blade and rolls Horizontal stress acting on blade. i and o are in enter and exit of bite zone,respectively Friction stresses acting on the surfaces between blade and rolls h i Initial thickness of blade H o Distance between two rolls , y Radian and axial distance upper and lower rolls, respectively

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Analysis of sandwich rolling with two different thicknesses outer layers based on slab method

Cited by 27 publications

References 20 publications

A fast calculation method of large-cylinder asymmetrical rolling force considering shear effect

A fast calculation method of large-cylinder asymmetrical rolling force considering shear effect

Analysis of unbonded sandwich rolling defected length of the head based on experiments with aluminum and copper

Research on rolling force and stress during rolling process of blade with complex surface based on multi-plane slab method

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