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Metals
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Computational Modeling of Material Forming Processes
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Computational Modeling of Material Forming Processes

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 5442

Special Issue Editors

Prof. Dr. Carlos Agelet de Saracibar

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Guest Editor
Department of Civil and Environmental Engineering, Technical University of Catalonia, UPC BarcelonaTech, 08034 Barcelona, Spain
Interests: computational mechanics; computational plasticity; contact mechanics; coupled thermomechanical problems; finite element method
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jean-Philippe Ponthot

E-Mail Website
Guest Editor
Department of Aerospace and Mechanical Engineering, University of Liege, B-4000 Liege, Belgium
Interests: computational mechanics; contact mechanics and numerical tribology; nonlinear coupled thermomechanical models; FEM, PFEM and DEM; impact simulation; metal forming simulation including roll forming; friction stir welding (FSW) processes and additive manufacturing (AM) processes
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Robertt Valente

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Guest Editor
Department of Mechanical Engineering, Universidade de Aveiro, Aveiro, Portugal
Interests: Computational mechanics; Computational plasticity; Finite Element Method (FEM) / Isogeometric Analysis (IgA) / Finite Cell Method (FCM); Simulation of forming and joining processes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The computational modeling of material forming processes has been a strongly active research field in the last few decades. Significant advances in this field have been made as the result of interdisciplinary multi-physics and multiscale research in related fields of computational mechanics, nonlinear constitutive material models, mathematical analysis, and numerical methods. Additionally, during this period, the industry has shown a growing interest in incorporating numerical techniques as a valuable tool for material design and process optimization.

Specific Invited Sessions (IS) on the computational modeling of material forming processes and the computational modeling of coupled thermomechanical problems have been organized by the Guest Editors of this Special Issue (SI) in well-known top international conferences, such as Computational Plasticity (COMPLAS) and Coupled Problems in Science and Engineering (COUPLED PROBLEMS), over the last 20 years.

This SI will collect a set of selected full papers to be presented at the IS organized by the Guest Editors in the upcoming international conferences COUPLED PROBLEMS 2021, to be held in Chia Laguna, South Sardinia, Italy, 13-16 June 2021, and COMPLAS 2021, to be held in Barcelona, Spain, 7-10 September 2021. A special 30% discount offer will be applied by Metals editors to those selected contributions.

On the other hand, this SI is also open to other high-quality contributions by well-known researchers working on the field.

Topics addressed in this Special Issue may include, but are not limited to: Computational modelling, Numerical simulation, Thermomechanical models, Material modeling, Stabilization methods, Numerical methods, Finite Element Method (FEM), Particle Finite Element Method (PFEM), Discrete Element Method (DEM), Finite Cell Method (FCM), Additive Manufacturing (AM), Friction Stir Welding (FSW), Welding and associated processes, Casting, Rolling, Hydroforming, Thixoforming, Roll Forming, sheet blanking and general sheet metal forming processes.

We are looking forward to welcoming your contributions.

Prof. Dr. Carlos Agelet de Saracibar
Prof. Dr. Jean-Philippe Ponthot
Prof. Dr. Robertt Valente
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Material Forming Processes
  • Coupled Thermomechanical Models
  • Numerical Simulation
  • Nonlinear Material Models
  • FEM
  • PFEM
  • DEM
  • IGA
  • FCM

Published Papers (3 papers)

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Research

15 pages, 6049 KiB  
Article
Analysis of Strain Inhomogeneity in Extruded Al 6061-T6 Processed by ECAE
by Fernando D. Carazo, Juan J. Pastor Alés, Javier Signorelli, Diego J. Celentano, Carlos M. Guevara and Roberto Lucci
Metals 2022, 12(2), 299; https://doi.org/10.3390/met12020299 - 09 Feb 2022
Cited by 2 | Viewed by 1351
Abstract
This paper presents an analysis of the test and simulation of the equal channel angular extrusion (ECAE) of a commercial Al 6061-T6 alloy previously extruded. Special emphasis is given to the analysis and comparison of the simulated values and distribution of equivalent plastic [...] Read more.
This paper presents an analysis of the test and simulation of the equal channel angular extrusion (ECAE) of a commercial Al 6061-T6 alloy previously extruded. Special emphasis is given to the analysis and comparison of the simulated values and distribution of equivalent plastic strain with those calculated with analytical models across the height of the middle section of the deformed billet. The results reveal the limitations of the analytical models when the effects of the inner die corner and curvature of the outer wall on the material response during the test are considered for the ECAE device used in this work. Specifically, in the simulations performed in this work, the plastic deformation zone, far from being uniform, extends along with the height of the billet where, in particular, near the inner wall over the inlet and outlet channels, even in the central region of the billet, the equivalent plastic strain is not homogeneous or discontinuous, varying mainly due to the effect of the curvature of the outer channel. Full article
(This article belongs to the Special Issue Computational Modeling of Material Forming Processes)
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13 pages, 2542 KiB  
Article
Modeling of Isothermal Dissolution of Precipitates in a 6061 Aluminum Alloy Sheet during Solution Heat Treatment
by Yong Liu, Dongyu Fang, Bin Zhu, Yilin Wang, Shiqi Li and Yisheng Zhang
Metals 2021, 11(8), 1234; https://doi.org/10.3390/met11081234 - 03 Aug 2021
Viewed by 1580
Abstract
During the solution heat treatment (SHT) process of aluminum alloys, precipitates dissolve into the matrix. To predict the dissolution time, modeling of isothermal dissolution of precipitates in 6061 aluminum alloy during SHT was conducted. A precipitate dissolution model was established, and the flowchart [...] Read more.
During the solution heat treatment (SHT) process of aluminum alloys, precipitates dissolve into the matrix. To predict the dissolution time, modeling of isothermal dissolution of precipitates in 6061 aluminum alloy during SHT was conducted. A precipitate dissolution model was established, and the flowchart of the modeling was designed as well. Then the explicit finite-difference method was employed to solve the dissolution model, and the mobile nodes method was used to deal with the moving interface. The simulation was based on real precipitates in 6061, and SHT experiments were conducted to validate the numerical model. The simulation results showed that the isothermal dissolution time of precipitates in 6061-T6 aluminum alloy at 560 °C is 11.6856 s. The dissolution time in the simulation was close to the experimental results, with an error of 16.7%, indicating that the modeling in this study was fairly reasonable and accurate. The error was caused by many factors, and the model should be improved. Full article
(This article belongs to the Special Issue Computational Modeling of Material Forming Processes)
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16 pages, 5643 KiB  
Article
A Physical-Based Plane Stress Constitutive Model for High Strength AA7075 under Hot Forming Conditions
by Fulong Chen, Haitao Qu, Wei Wu, Jing-Hua Zheng, Shuguang Qu, Yujie Han and Kailun Zheng
Metals 2021, 11(2), 314; https://doi.org/10.3390/met11020314 - 11 Feb 2021
Cited by 10 | Viewed by 1676
Abstract
Physicallybased constitutive equations are increasingly used for finite element simulations of metal forming processes due to the robust capability of modelling of underlying microstructure evolutions. However, one of thelimitations of current models is the lack of practical validation using real microstructure data due [...] Read more.
Physicallybased constitutive equations are increasingly used for finite element simulations of metal forming processes due to the robust capability of modelling of underlying microstructure evolutions. However, one of thelimitations of current models is the lack of practical validation using real microstructure data due to the difficulties in achieving statistically meaningful data at a sufficiently large microstructure scale. Particularly, dislocation density and grain size governing the hardening in sheet deformation are of vital importance and need to be precisely quantified. In this paper, a set of dislocation mechanics-based plane stress material model is constructed for hot forming aluminum alloy. This material model is applied to high strength 7075 aluminum alloy for the prediction of the flow behaviorsconditioned at 300–400 °C with various strain rates. Additionally, an electron backscatter diffraction (EBSD) technique was applied to examine the average grain size and geometrical necessary dislocation (GND) density evolutions, enabling both macro- and micro- characteristics to be successfully predicted. In addition, to simulate the experienced plane stress states in sheet metal forming, the calibrated model is further extended to a plane stress stateto accuratelypredict the forming limits under hot conditions.The comprehensively calibrated material model could be used for guidinga better selection of industrial processing parameters and designing process windows, taking into account both the formed shape as well as post formed microstructure and, hence, properties. Full article
(This article belongs to the Special Issue Computational Modeling of Material Forming Processes)
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