FEM analysis for V–H rolling process by updating geometric method

Yu, Hailiang; Li, Xianghua; Zhao, Xin; Kusaba, Yoshiaki

doi:10.1016/j.jmatprotec.2006.07.012

Cited by 30 publications

(23 citation statements)

References 7 publications

(7 reference statements)

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“…The nodes in the middle cross section of strip thickness are constrained, U Y = 0; and the nodes in the middle cross section of strip width are constrained, U Z = 0. The FE models of the second pass and the third are obtained by updating geometrical method (Yu et al, 2006). Table 3 shows the inclusion shape after deformation in the rolling processes.…”

Section: Fe Modelmentioning

confidence: 99%

“…In this paper, the behavior of spherical non-metallic inclusions in type 304 stainless steel strips during multi-pass cold rolling was simulated by 3D FEM and updating geometric method (Yu et al, 2006) on the platform of LS-DYNA. We focus on analyzing the deformation of inclusions under a variety of the inclusion sizes and the inclusion positions.…”

Section: Introductionmentioning

confidence: 99%

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Deformation behavior of inclusions in stainless steel strips during multi-pass cold rolling

et al. 2009

Journal of Materials Processing Technology

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Section: Fe Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deformation behavior of inclusions in stainless steel strips during multi-pass cold rolling

et al. 2009

Journal of Materials Processing Technology

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“…The updating geometrical method [44] is employed to simulate the multi-pass rolling processes with a single pass rolling process FE model, which is that adding displacements from the previous analysis results and updating the geometry of the finite element model to the deformed configuration. The updating geometrical process of rolling processes is shown in Fig.…”

Section: Multi-pass Rolling Process Simulationmentioning

confidence: 99%

“…The closure and growth of crack during multi-pass V-H rolling process (V 1 -H 1 -V 2 -H 2 -V 3 -H 3 ) [44] has been simulated. In the simulation, the diameter of horizontal roll is 1 150mm.…”

Section: Evolution Of Corner Cracks During Rolling 221 Basic Paramementioning

confidence: 99%

FE Analysis of Evolution of Defects during Rolling

Yu¹

2010

Finite Element Analysis

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Defects might appear in materials, such as cracks, inclusions. The evolution behavior of defects in steels during rolling severely affects the rolled products quality. In this chapter, the author summed up the previous researches on the evolution of cracks and inclusions during rolling, mainly contains the researches on the evolution of surface cracks by 2D thermo-mechanical FEM, the evolution of surface cracks during vertical-horizontal (V-H) rolling by 3D FEM, the evolution of internal cracks during V-H rolling, the evolution of inclusions during flat rolling. Evolution of surface cracks by 2D thermo-mechanical FEMSince the brittle fracture model proposed by Griffith last century, a large number of researchers and engineers have carried out a lot of work that focuses on the behavior of cracks. The research reports on the appearance and the propagation of cracks in rolled steels during rolling were investigated [22~25]. Considerable investigations have been carried out on applying FEM for simulation of the propagation and closure of cracks in materials during rolling. A self-healing shape memory alloy (SMA) composite was simulated via a finite element approach that allows crack to propagate in a brittle matrix material by Burton, et al [26]. The SMA wires were carefully (1) where  is density; c is specific heat; k is coefficient of heat conductivity; q  is internal heat source strength, which is the plastic work done of slab deformation during rolling.where m is coefficient of heat transform by plastic work done, 95 .During hot rolling, the thermal transfers between the slab surface and the external environment contain two ways: heat emission and convection current. When the slab is not in the deformation zone, the heat radiation is much larger than the heat convection which could be neglected. According to the Stefan-Boltzman equation,S is the coefficient of Stefan-Boltzman; S B is the blackness on slab surface, T is the slab surface temperature;  T is the temperature of environment. The heat transfers between the slab surface and the work roll is calculated by the Eq. (4). ) (where h i is the coefficient of convective heat transfer between the slab and the roll; T R is the temperature of roll. The coupled thermal-mechanical method is solved by dynamic explicit approach [35]. The heat transfer equations are integrated using the explicit forward-difference time integration rule:

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“…[14] Rolling techniques have a long history dating back more than 100 years. Generally, the researchers have focused on product profile, [15][16][17][18][19] product defects, [20][21][22][23][24][25][26] product microstructure, [27][28][29][30] wear and lubrication of roll mill, [31][32][33][34] etc. With the rapid development of UFG/NG metals, severe plastic deformation techniques have become increasingly important in rolling.…”

Section: Introductionmentioning

confidence: 99%

Special Rolling Techniques for Improvement of Mechanical Properties of Ultrafine‐Grained Metal Sheets: a Review

Lü

Tieu

et al. 2015

Adv Eng Mater

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Interest in ultrafine-grained (UFG) materials has grown rapidly in past 20 years. This review focuses on the application of special rolling techniques for improvement of the mechanical properties of UFG metal sheets. These techniques include asymmetric rolling, cryorolling, asymmetric cryorolling, cross-accumulative roll bonding, and skin-pass rolling. The techniques also include a combination of processes such as equal channel angular press and subsequent rolling, combined high-pressure torsion and subsequent rolling, as well as combined accumulative roll bonding and subsequent asymmetric rolling. We also discuss the main mechanisms leading to improvement in the ductility of UFG materials related to the special rolling techniques. properties of ultrafine-grained (UFG) metal sheets. These techniques include asymmetric rolling, cryorolling, asymmetric cryorolling, cross-accumulative roll bonding and skin-pass rolling. The techniques also include a combination of processes such as equal channel angular press and subsequent rolling, combined high pressure torsion and subsequent rolling, as well as combined accumulative roll bonding and subsequent asymmetric rolling. We also discuss the main mechanisms leading to improvement in the ductility of UFG materials related to the special rolling techniques.

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FEM analysis for V–H rolling process by updating geometric method

Cited by 30 publications

References 7 publications

Deformation behavior of inclusions in stainless steel strips during multi-pass cold rolling

Deformation behavior of inclusions in stainless steel strips during multi-pass cold rolling

FE Analysis of Evolution of Defects during Rolling

Special Rolling Techniques for Improvement of Mechanical Properties of Ultrafine‐Grained Metal Sheets: a Review

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