Special Issue "Simulation and Analysis of Materials Failure Under Loading"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Simulation and Design".

Deadline for manuscript submissions: 30 November 2020.

Special Issue Editors

Prof. Vieroslav Molnár
E-Mail Website
Guest Editor
Department of Computer Aided Manufacturing Technologies, Faculty of Manufacturing Technologies with a seat in Prešov, Technical University of Košice, Bayerova 1, 080 01 Prešov, Slovak Republic
Interests: logistics; production technologies and technical preparation of production; designing, analyzing, and simulating various components of technical equipment
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Prof. Gabriel Fedorko
E-Mail Website
Co-Guest Editor
Institute of logistics and transport Faculty of Mining, Ecology, Process Control and Geotechnologies of the Technical University of Košice, Letná 9, 040 01 Košice, Slovak Republic
Interests: logistics; computer simulation; FEM; mechanical; production technologies; virtual reality; exponential technologies
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

It is commonly known that manufacturers strive to use construction materials with the optimal employment of their cross sections. In the cross sections, critical strain and deformations occur under loading. Any failures in material and its inner structure result in damage, improper functioning or even destruction of construction itself. Practical verification of construction design under load is commonly time- and money-consuming. One of the methods offering solution to this is the simulation which uses numerical methods to obtain approximate or accurate solutions. There are several methodologies now to achieve this, easy to implement and adopt while also being accurate. Extensive employment of powerful computers resulting in subsequent improvement of computational sources offers a tool to develop numerical methods that are able to simulate and analyze complex construction systems featuring specific mechanical configurations.

It is my pleasure to invite you to publish your existing research works in the Special Issue, ‘Simulation and Analysis of Materials Failure Under Loading’, of Materials as a full paper, short communication, or review.

The authors are advised to submit innovative applications of research solutions. Material failures under loading, analyzed in the research, need to be well depicted from a mechanical point of view, and a particular emphasis needs to be given to their occurrence under loading.

Potential topics include but are not limited to:

  • Simulation and numerical analysis of construction systems with the use of FEM;
  • Simulation and analysis of materials failure bearings, slabs and shells;
  • Simulation and analysis of composite materials failure;
  • Accurate and convergent analysis of FEM based methods;
  • Elasticity in simulation and analysis of materials failure under loading;
  • Linear and nonlinear behavior of structures under loading;
  • Validation of experimental processes for materials under loading;
  • Application of new materials and their simulation and numerical analysis in a technical practice.

Prof. Vieroslav Molnár
Prof. Gabriel Fedorko
Guest Editor

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 papers will be 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. Materials is an international peer-reviewed open access semimonthly 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 2000 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

  • Materials failure
  • Loading of material
  • Simulation of materials failure
  • Analysis of materials failure
  • New experimental methods

Published Papers (5 papers)

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Research

Open AccessArticle
Mechanical Evaluation of Titanium Plates for Osteoesynthesis High Neck Condylar Fracture of Mandible
Materials 2020, 13(3), 592; https://doi.org/10.3390/ma13030592 - 27 Jan 2020
Abstract
Background: In the literature no information about plates for the high-neck mandibular condylar osteosynthesis could be found despite that 30 plate designs have been published. The main course consider the basal condylar or diacapitular fractures. The aim of the study was to test [...] Read more.
Background: In the literature no information about plates for the high-neck mandibular condylar osteosynthesis could be found despite that 30 plate designs have been published. The main course consider the basal condylar or diacapitular fractures. The aim of the study was to test mechanically all available designs (only 4 of 30 was proper) on polyurethane mandibles using an individually designed clamping system. Methods: Forces required for a 1 mm displacement of fixed fracture fragments and incidents of screw loosening were recorded. Results: It has occured that dedicated plates for fixation are much weaker than set of two straight plates (p < 0.0001). General observation is the bigger plate and more screws, the better rigid stable osteosynthesis of mandibular condyle, however, there are limitations in plates design for high-neck fractures resulted in restricted operation field. Conclusion: Double straight plates occured to be the best mechanical fixation for high-neck fractures of the mandibular condyle. Maybe other existing plates could be used but only after prebending or that fracture required novel dedicated plates design. Full article
(This article belongs to the Special Issue Simulation and Analysis of Materials Failure Under Loading)
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Open AccessArticle
FE Analysis of Critical Testing Parameters in Kolsky Bar Experiments for Elastomers at High Strain Rate
Materials 2019, 12(23), 3817; https://doi.org/10.3390/ma12233817 - 20 Nov 2019
Abstract
The main aim of this research is to present complete methodological guidelines for dynamic characterization of elastomers when subjected to strain rates of 100/s–10,000/s. We consider the following three aspects: (i) the design of high strain rate testing apparatus, (ii) finite element analysis [...] Read more.
The main aim of this research is to present complete methodological guidelines for dynamic characterization of elastomers when subjected to strain rates of 100/s–10,000/s. We consider the following three aspects: (i) the design of high strain rate testing apparatus, (ii) finite element analysis for the optimization of the experimental setup, and (iii) experimental parameters and validation for the response of an elastomeric specimen. To test low impedance soft materials, design of a modified Kolsky bar is discussed. Based on this design, the testing apparatus was constructed, validated, and optimized numerically using finite element methods. Furthermore, investigations on traditional pulse shaping techniques and a new design for pulse shaper are described. The effect of specimen geometry on the homogeneous deformation has been thoroughly accounted for. Using the optimized specimen geometry and pulse shaping technique, nitrile butadiene rubber was tested at different strain rates, and the experimental findings were compared to numerical predictions. Full article
(This article belongs to the Special Issue Simulation and Analysis of Materials Failure Under Loading)
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Open AccessArticle
Experimental and Finite Element Research on the Failure Mechanism of C/C Composite Joint Structures under Out-of-Plane Loading
Materials 2019, 12(18), 2922; https://doi.org/10.3390/ma12182922 - 10 Sep 2019
Abstract
The loading and the failure mode of metal hexagon bolt joints and metal counter-sunk bolt joints of C/C composites were investigated. The joints were tested for out-of-plane loading at two temperatures (600 °C and 800 °C). The failure morphology of a lap plate [...] Read more.
The loading and the failure mode of metal hexagon bolt joints and metal counter-sunk bolt joints of C/C composites were investigated. The joints were tested for out-of-plane loading at two temperatures (600 °C and 800 °C). The failure morphology of a lap plate was investigated, and the main failure modes were determined. The typical load–displacement curve was characterized and the test was simulated using ABAQUS non-linear finite element software. Furthermore, progressive damage was induced, and comparison of the finite element simulation with the experimental data revealed that the failures mainly occurred in the lower lap plate and were dominated by cracking and delamination of the matrix, accompanied by the pull-out of a small number of piercing fibers. Finally, the influences of the temperature, nut radius, and fixture geometry on the critical load were determined via simulation. Full article
(This article belongs to the Special Issue Simulation and Analysis of Materials Failure Under Loading)
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Open AccessArticle
Failure Mechanisms and Reinforcing Modes of Ply Splice Fiber-Reinforced Composite Laminates under Tensile Load
Materials 2019, 12(18), 2912; https://doi.org/10.3390/ma12182912 - 09 Sep 2019
Cited by 1
Abstract
To fabricate large-scale or unusually shaped composite structures, pieces of fabric plies can be spliced to match size and shape requirements, forming ply splice structures. The junction of different plies can be considered as a defect in the resulting composite material, affecting the [...] Read more.
To fabricate large-scale or unusually shaped composite structures, pieces of fabric plies can be spliced to match size and shape requirements, forming ply splice structures. The junction of different plies can be considered as a defect in the resulting composite material, affecting the overall mechanical properties. In this paper, unidirectional carbon fiber-reinforced plastic (CFRP) with ply splices was used as a research object to study these potential material defects. The effects of ply splices at different positions on the tensile properties of CFRP and the coupling between position of ply splicing were analyzed. Simultaneously, a finite element model was established to analyze the damage evolution, in which a continuous damage model and a cohesive zone model were used to describe the damage of the composite and interface layers, respectively. The model results were in good agreement with observed experimental results. Our results showed that there were three main factors for this failure mechanism: boundary effects, whether the ply splices were independent, or whether they were close to each other. In short, when two ply splices were located at the edge or independent of each other, the failure mode was first delamination and then fiber fracture, and the tensile strength was high. However, when the two ply splices were close to the edge or close to each other, the failure mode was first local fiber fracture and then delamination damage, and the resulting tensile strength was low. Finally, different reinforcement methods to improve the tensile properties of composites were adopted for the splicing layers at different positions through the analysis via model simulation. The two-side patch repair method was used to reinforce the ply splices on or near the edge. Additionally, increasing the toughness of the adhesive layer was used to reinforce the ply splices that were inside the material. These results showed that the tensile strength was enhanced by these two methods of reinforcement, and the initial damage load was especially increased. Full article
(This article belongs to the Special Issue Simulation and Analysis of Materials Failure Under Loading)
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Open AccessArticle
Influence of Temperature on the Longitudinal Cracking in Multipurpose Precast Concrete Sleepers Prior to Their Installation
Materials 2019, 12(17), 2731; https://doi.org/10.3390/ma12172731 - 26 Aug 2019
Abstract
Prestressed monoblock railway sleepers are concrete elements with almost no reinforcement apart from the prestressing wires, which makes them very sensitive to any stress variation that can induce tensile stresses. In recent years, severe longitudinal cracking has been observed in a number of [...] Read more.
Prestressed monoblock railway sleepers are concrete elements with almost no reinforcement apart from the prestressing wires, which makes them very sensitive to any stress variation that can induce tensile stresses. In recent years, severe longitudinal cracking has been observed in a number of sleepers in hot regions of Spain, even before these elements were put in service. This work studies the problem while considering the thermal variation as the main factor affecting this cracking phenomenon. A non-linear static load-step analysis is applied on a non-linear finite element model to reproduce the problem and, after its experimental validation, the influence of three design parameters of the sleepers are studied: the nature of concrete aggregates, the dowel thickness, and the dowel material. The results show that all these three parameters may have significant influence on the problem, with the dowel material being the most important parameter. When the dowels are made of a material with a high elastic modulus and a high thermal expansion coefficient, the crack opening induced by a realistic thermal variation can reach significant values and result in longitudinal crack propagation. The changes of humidity are not considered in this study because they are beyond the scope of this work. Full article
(This article belongs to the Special Issue Simulation and Analysis of Materials Failure Under Loading)
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