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Metals
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Finite Element Simulation of Mechanical Properties for Metallic Materials
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Finite Element Simulation of Mechanical Properties for Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Computation and Simulation on Metals".

Deadline for manuscript submissions: 25 February 2025 | Viewed by 4661

Special Issue Editors

Prof. Dr. Miroslav Zivkovic

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Guest Editor
Faculty of Engineering, University of Kragujevac, 34000 Kragujevac, Serbia
Interests: advanced finite element simulations; structural analysis of metallic structures; continuum mechanics; fatigue; damage mechanics
Special Issues, Collections and Topics in MDPI journals
Dr. Vladimir Dunić

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Guest Editor
Faculty of Engineering, University of Kragujevac, Kragujevac 34000, Serbia
Interests: Shape memory alloys; thermo-mechanical coupling; advanced finite element simulations
Prof. Dr. Nenad Gubeljak

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Guest Editor
Faculty of Mechanical Engineering, University of Maribor, SI-2000 Maribor, Slovenia
Interests: welded joints; structural integrity assessment; fracture mechanics; finite element analysis, multi-scale modeling, fatigue
Special Issues, Collections and Topics in MDPI journals
Dr. Nenad Djordjevic

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Guest Editor
Centre for Assessment of Structures and Materials under Extreme Conditions, Department of Mechanical and Aerospace Engineering, Brunel University London, London, UK
Interests: applied and computational mechanics; dynamic analysis of solids and structures; thermodynamic constitutive models; plasticity and damage; anisotropic materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Determining the mechanical properties of metals is one of the main challenges in finite element simulations. Correct material parameters and constitutive models capable of capturing the physical behavior of materials are two essential components for predictive finite element simulations. Furthermore, the predictive modeling of a range of metals undergoing inelastic deformation typically requires a number of advanced hardening and damage functions that lead to validated simulation results. In addition, computational mechanics may include new techniques and approaches, such as phase-field modeling, which can predict the degradation of material parameters due to damage occurrence. The development of such techniques will provide a new feature in the investigation of metallic structures. An assessment of the balance of (reversible) strain energy and dissipated energy in the material can improve the simulation quality of the material undergoing cyclic loading.

In this Special Issue, we welcome articles that cover new and improved computational techniques which will either provide a breakthrough or solve challenges associated with the finite element simulation of metallic structures. Equally, advanced techniques and methods required for material model characterization are strongly desirable topics covered in this Special Issue.

Prof. Dr. Miroslav Zivkovic
Dr. Vladimir Dunić
Prof. Dr. Nenad Gubeljak
Dr. Nenad Djordjevic
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

  • finite element simulation
  • mechanical properties
  • metallic materials
  • identification of material parameters
  • constitutive models
  • hardening functions
  • advanced computational mechanics methods and techniques
  • continuum damage mechanics

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Published Papers (4 papers)

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Research

16 pages, 5512 KiB  
Article
Research on Dynamic Evolution of Residual Stress Based on Simulation of Piston Manufacturing Process
by Dong Yang, Lizheng Li, Chuanlong Zhou and Qiang He
Metals 2024, 14(12), 1327; https://doi.org/10.3390/met14121327 - 24 Nov 2024
Viewed by 403
Abstract
Rather than focusing on the residual stress generated from casting, machining, or heat treatment unilaterally, a comprehensive research method to consider the whole dynamic evolution of residual stress is proposed. The cast iron piston is taken as the research object to establish a [...] Read more.
Rather than focusing on the residual stress generated from casting, machining, or heat treatment unilaterally, a comprehensive research method to consider the whole dynamic evolution of residual stress is proposed. The cast iron piston is taken as the research object to establish a continuous simulation model for its manufacturing. Firstly, a simulation model of piston casting is established to analyze the stress change. Subsequently, through the machining and heat treatment simulation of the piston, the variation law of residual stress before and after machining is analyzed. Different process parameters are designed to study the redistribution mechanism of residual stress. Residual stress tests are further conducted on the processed piston products. The results indicate that shakeout can effectively remove 60% to 80% of the residual stress. The removal of materials results in overall residual stress release and redistribution for the piston, and the piston releases 10% to 40% of the residual stress after machining. The heat treatment of the machined piston can effectively reduce the residual stress with a maximum reduction of 27.1%. The good consistency between experimental results and simulation results further confirms the feasibility of the comprehensive research method. This study is beneficial for achieving low stress manufacturing of pistons and improving their working performance. Full article
(This article belongs to the Special Issue Finite Element Simulation of Mechanical Properties for Metallic Materials)
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17 pages, 3917 KiB  
Article
Experimental Characterization and Phase-Field Damage Modeling of Ductile Fracture in AISI 316L
by Vladimir Dunić, Nenad Gubeljak, Miroslav Živković, Vladimir Milovanović, Darko Jagarinec and Nenad Djordjevic
Metals 2024, 14(7), 787; https://doi.org/10.3390/met14070787 - 5 Jul 2024
Viewed by 1012
Abstract
(1) Modeling and characterization of ductile fracture in metals is still a challenging task in the field of computational mechanics. Experimental testing offers specific responses in the form of crack-mouth (CMOD) and crack-tip (CTOD) opening displacement related to applied force or crack growth. [...] Read more.
(1) Modeling and characterization of ductile fracture in metals is still a challenging task in the field of computational mechanics. Experimental testing offers specific responses in the form of crack-mouth (CMOD) and crack-tip (CTOD) opening displacement related to applied force or crack growth. The main aim of this paper is to develop a phase-field-based Finite Element Method (FEM) implementation for modeling of ductile fracture in stainless steel. (2) A Phase-Field Damage Model (PFDM) was coupled with von Mises plasticity and a work-densities-based criterion was employed, with a threshold to propose a new relationship between critical fracture energy and critical total strain value. In addition, the threshold value of potential internal energy—which controls damage evolution—is defined from the critical fracture energy. (3) The material properties of AISI 316L steel are determined by a uniaxial tensile test and the Compact Tension (CT) specimen crack growth test. The PFDM model is validated against the experimental results obtained in the fracture toughness characterization test, with the simulation results being within 8% of the experimental measurements. (4) The novel implementation offers the possibility for better control of the ductile behavior of metallic materials and damage initiation, evolution, and propagation. Full article
(This article belongs to the Special Issue Finite Element Simulation of Mechanical Properties for Metallic Materials)
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21 pages, 13201 KiB  
Article
Estimation of Mechanical Properties of Aluminum Alloy Based on Indentation Curve and Projection Area of Contact Zone
by Yunfeng Bai and Chunguo Liu
Metals 2024, 14(5), 576; https://doi.org/10.3390/met14050576 - 13 May 2024
Viewed by 1434
Abstract
This study proposes a method for determining aluminum alloys’ yield stress and hardening index based on indentation experiments and finite element simulations. Firstly, the dimensionless analysis of indentation variables was performed on three different aluminum alloys using the same maximum indentation depth to [...] Read more.
This study proposes a method for determining aluminum alloys’ yield stress and hardening index based on indentation experiments and finite element simulations. Firstly, the dimensionless analysis of indentation variables was performed on three different aluminum alloys using the same maximum indentation depth to obtain load-displacement curves. Then, laser confocal microscopy was used to observe the residual indentation morphology. And four dimensionless parameters were derived from the load-displacement curves while another dimensionless parameter was obtained from the projection area of the contact zone. Subsequently, a genetic algorithm was employed to solve these five dimensionless parameters and estimate the yield stress and hardening index. Finally, the predicted results are compared with uniaxial tensile experiments and the results obtained are essentially the same. The yield stress and hardening index can be predicted using this method. And an example is used to verify that this method enables predictions for unidentified “mysterious material” and the expected results agree with the experiments. Full article
(This article belongs to the Special Issue Finite Element Simulation of Mechanical Properties for Metallic Materials)
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11 pages, 925 KiB  
Article
Simulation and Optimization of Shot Peening Process for CoCrFeNiAlx High-Entropy Alloy
by Xiaodong Li, Guoqing Gou, Chuanhai Jiang and Jijin Xu
Metals 2023, 13(9), 1537; https://doi.org/10.3390/met13091537 - 30 Aug 2023
Viewed by 1107
Abstract
In this work, Ti-10V-2Fe-3Al alloy was selected as the test material, and the shot peening process of a CoCrFeNiAlx system high-entropy alloy was simulated based on effective test conditions, and the effects of dry shot peening and wet shot peening on the surface [...] Read more.
In this work, Ti-10V-2Fe-3Al alloy was selected as the test material, and the shot peening process of a CoCrFeNiAlx system high-entropy alloy was simulated based on effective test conditions, and the effects of dry shot peening and wet shot peening on the surface properties were determined. Preliminary simulation results the surface of the test sample display a clear plastic deformation state that gradually diminishes and shifts towards the outermost layer. The stress transfer of the test sample gradually decreases, showing a gradient change, and the twin density also shows a random sample change. Then, the high-entropy alloy shot peening process was optimized, and the best process parameters were determined by analyzing the microhardness data, depth of action layer, and surface state. It was found that after wet shot peening, a new characteristic peak is generated, and with the increase in the size of the shot, its overall kinetic energy becomes increasingly higher, the strain energy of the material surface becomes increasingly higher, and the grain refinement is relatively high. This work provides a new approach to investigating the issues that are present during the shot peening process of CoCrFeNiAlx system high-entropy alloys. Full article
(This article belongs to the Special Issue Finite Element Simulation of Mechanical Properties for Metallic Materials)
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