Mechanics-based determination of the center roller displacement in three-roll bending for smoothly curved rectangular plates

Shin, Jong Gye; Lee, Jang Hyun; Kim, You Il; Yim, Hyun June

doi:10.1007/bf03185120

Cited by 13 publications

(3 citation statements)

References 7 publications

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“…Figure 16 shows the results, and indeed the resulting push unit movement is aligned with the length axis of the undeformed part of the RHS. With respect to the feeding phase, Shin et al [25] derived a method to predict the required centre roll displacement, in Figure 2, for a certain desired curvature of a plate. Using similar principles, a relation is derived here between the required curvature of the RHS, and the corresponding centre roll displacement , the angular velocities of the rolls , , and (Figure 2) and the corresponding bi-axial movement of the push unit in -and -direction, ℎ and ℎ respectively, to simulate .…”

Section: Geometry and Materialsmentioning

confidence: 99%

Buckling and wrinkling of rectangular hollow sections curved in three-point-roll bending

Cornelissen

Maljaars

Hofmeyer

2021

Int J Adv Manuf Technol

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Section: Geometry and Materialsmentioning

confidence: 99%

Buckling and wrinkling of rectangular hollow sections curved in three-point-roll bending

Cornelissen

Maljaars

Hofmeyer

2021

Int J Adv Manuf Technol

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“…[ 1 ]. Rolling machines with three or four rollers are generally considered for manufacturing shells (bending plates) with different curvatures [ 1 , 2 , 3 , 4 ]. In order to design a rolling machine, it is necessary to calculate the bending force and the curvature radius of the bending plate for given material properties and geometrical parameters.…”

Section: Introductionmentioning

confidence: 99%

Estimating of Bending Force and Curvature of the Bending Plate in a Three-Roller Bending System Using Finite Element Simulation and Analytical Modeling

2021

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Many industries such as shipbuilding require steel bending plates in a wide range of radii, thus bending machines are often designed and produced on a custom basis in shipyards. From a design perspective, however, the bending force and the radius of the bending plate as a function of vertical displacement of the upper roller must be known. In this paper, a hybrid numerical–analytical approach is proposed to investigate the three-roller bending process for two plates of steel used in the naval industry. Firstly, the bending process is modeled using the finite element (FE) method and regression models for the bending force as a function of plate thickness and vertical displacement of the upper roller were constructed. Then, based on the findings from FE analysis, using the bent bar theory, two analytical expressions for the bending force were derived. Using geometric and deformation compatibilities, analytical expressions for the vertical displacement of the upper roller as a function of the curvature of the bending plate were also developed. The FE results suggest that the cross section of the plate is practically a plastic hinge in the tangent area of the upper roller and that the deformation compatibilities must be considered in order to estimate the curvature radius of the bending plate using analytical formulations. These results are of practical importance in designing rolling machines to estimate the setting parameters.

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“…Researchers attempted to replace this highly timeconsuming technique by numerical simulations. For example, Yang and Shima developed the relationship between bending moment and workpiece curvature [1], while Shin et al developed a two-dimensional model based on finite element analysis for the relationship between the displacement of the inner roll and the desired curvature of bent plate [2]. Fan and Meng applied a two-dimensional model for simulations in the case of small ratios of plate thickness over plate width [3].…”

Section: Introductionmentioning

confidence: 99%

FEM Analysis of Mecano-Welding Process for Manufacturing Cylinders

Zheng

Champliaud

2013

KEM

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Cylindrical components produced by mecano-welding process are widely used in industries. The mecano-welding process consists of a roll bending sub-process which can produce non-closed cylinders and a welding process which can seam gaps. This paper proposes a numerical model to simulate the process and to get better understanding of the process mechanism. Explicit and implicit solvers are applied to the numerical modeling by using LS-DYNA and ANSYS software. The numerical model can provide a useful tool for design and optimization of the mecano-welding process.

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Mechanics-based determination of the center roller displacement in three-roll bending for smoothly curved rectangular plates

Cited by 13 publications

References 7 publications

Buckling and wrinkling of rectangular hollow sections curved in three-point-roll bending

Buckling and wrinkling of rectangular hollow sections curved in three-point-roll bending

Estimating of Bending Force and Curvature of the Bending Plate in a Three-Roller Bending System Using Finite Element Simulation and Analytical Modeling

FEM Analysis of Mecano-Welding Process for Manufacturing Cylinders

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