Special Issue "Advances in Numerical Analysis and Design of Rolling Processes"

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Mechanical Engineering".

Deadline for manuscript submissions: closed (15 December 2021) | Viewed by 1198

Special Issue Editor

Prof. Dr. Youngseog Lee
E-Mail Website
Guest Editor
Department of Mechanical Engineering, Chung-Ang University, Seoul 06974, Korea
Interests: roll pass design; hot rolling; plasticity; dynamic fracture; finite element analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rolling is one of the fields of metal forming that has great advantages in the mass production of raw materials, such as steel, aluminum and copper. Along with the rapid development of computer performance since the 1970s, the numerical analysis capability of rolling has improved rapidly, and, as a result, many papers on rolling and rolling process design have been published. In the 1990s, precise numerical analysis models began to be developed and numerical analysis results applicable to the actual rolling mill (or process line) began to appear in the literature. However, this is possible only in a very restricted range, and there is a limit in applying it to the production site. Some successful results of numerical analysis applicable to the actual rolling mill were recently generated, and redesigning the rolling process has been shown to improve the quality of a product. Hence, in this Special Issue, entitled “Advances in Numerical Analysis and Design of Rolling Processes”, we would like to publish mechanics-based or metallurgy-based numerical analysis papers that can be applied to the actual rolling mill and rolling process.

Prof. Dr. Youngseog Lee
Guest Editor

Manuscript Submission Information

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Keywords

  • control of the shape change of material section during rolling
  • computer modeling
  • new constitutive models
  • new technologies of process design
  • prediction of damage evolution during rolling
  • simulation of texture evoluation
  • recrystallization
  • phase transformation
  • AI-based methods for product improvement in rolling
  • controlled rolling and cooling

Published Papers (2 papers)

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Research

Article
Numerical Analysis of Edge Cracking in High-Silicon Steel during Cold Rolling with 3D Fracture Locus
Appl. Sci. 2021, 11(18), 8408; https://doi.org/10.3390/app11188408 - 10 Sep 2021
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Abstract
In this study, a 3D fracture locus of high-silicon steel strip was constructed through a series of fracture tests with specimens of various shapes and corresponding finite element (FE) simulations of the fracture tests. A series of FE analyses coupled with the developed [...] Read more.
In this study, a 3D fracture locus of high-silicon steel strip was constructed through a series of fracture tests with specimens of various shapes and corresponding finite element (FE) simulations of the fracture tests. A series of FE analyses coupled with the developed fracture locus was conducted, and the effect of the secondary roll-bending ratio (defined as L2/R2, where L2 and R2, respectively, denote the secondary work roll barrel length and the radius of the convex curvature of the work roll surface profile emulating positive roll bending) and the initial notch length on edge cracking in the strip during cold rolling was investigated. The results reveal that the 2D fracture locus that does not include the Lode angle parameter (varying between −0.81 and 0.72 during cold rolling) overestimates the edge cracking in the range of 13.1–22.2%. The effect of the initial notch length on the length of crack grown in the transverse direction of the strip during cold rolling is greatest when the ratio L2/R2 is 0.12. Full article
(This article belongs to the Special Issue Advances in Numerical Analysis and Design of Rolling Processes)
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Article
Influence of Roll Diameter on Material Deformation and Properties during Wire Flat Rolling
Appl. Sci. 2021, 11(18), 8381; https://doi.org/10.3390/app11188381 - 09 Sep 2021
Viewed by 395
Abstract
The influence of roll diameter on the strain distribution, shape change, contact pressure, and damage value of a workpiece was investigated during wire flat rolling to control the material properties of the flattened wire. The flattened wires fabricated by the four different rolls [...] Read more.
The influence of roll diameter on the strain distribution, shape change, contact pressure, and damage value of a workpiece was investigated during wire flat rolling to control the material properties of the flattened wire. The flattened wires fabricated by the four different rolls were compared using finite element analysis. The strain inhomogeneity of the flat-rolled wire increased with the roll diameter; thus, the macroscopic shear bands were strengthened as the roll diameter increased during wire flat rolling. The contact width and lateral spreading of the flattened wire increased with the roll diameter; therefore, the reduction in area decreased with the roll diameter. The contour of the normal contact pressure on the wire surface exhibited a similar pattern regardless of the roll diameter. The contact pressure showed higher values at the entry, edge, and exit zones in the contact area. The distribution of the damage value varied with the roll diameter. The free surface region tended to have the peak damage value during the process; however, the center region exhibited the maximum damage value with the roll diameter. From the perspective of the damage value, the optimum roll diameter was in existence during wire flat rolling. The underlying cause of the different strain distributions, shape changes, and damage values of the flat-rolled wire was the different contact lengths originating from the different roll diameters during wire flat rolling. Full article
(This article belongs to the Special Issue Advances in Numerical Analysis and Design of Rolling Processes)
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