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Applied Sciences
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Advanced Numerical Approaches for Crack Growth Simulation
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Advanced Numerical Approaches for Crack Growth Simulation

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

Deadline for manuscript submissions: closed (10 June 2022) | Viewed by 11939

Special Issue Editors

Prof. Dr. Roberto Citarella

E-Mail Website
Guest Editor
Department of Industrial Engineering, University of Salerno, 84084 Fisciano, Italy
Interests: fracture mechanics; fatigue; bioengineering; vibroacoustics; boundary element method; finite element method; statistical energy analysis; dynamics
Special Issues, Collections and Topics in MDPI journals
Dr. Venanzio Giannella

E-Mail Website
Guest Editor
Department of Industrial Engineering, University of Salerno, 84084 Fisciano, SA, Italy
Interests: fracture; fatigue; finite element method; vibrations; probabilistic models; simulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue of Applied Sciences aims at gathering papers presenting the latest advances in numerical approaches for crack-growth simulation. The focus will be, in particular, but not exclusively, on the simulation of fracture behavior of traditional or innovative materials (composites, functionally graded, additively manufactured, etc.) through the usage of hybrid numerical approaches (e.g., FEM-BEM hybrid methods). 

Even if the focus is on problems related to fracture, articles dealing with other physical phenomena will also be accepted, in order to establish the differences and foresee similarities in the synergetic use of different numerical methods to tackle the same problem. 

The submission of papers on numerical simulation, possibly reporting experimental work to validate numerical analyses, is welcome. The application of damage and fracture mechanics concepts, the appraisal of stress concentration effects, and the consideration of residual stresses and anisotropic behavior will be of particular interest for a range of structural applications that can be foreseen to go from biomedical engineering to the aerospace sector. 

The paper should possibly highlight the enhanced accuracy, computational advantages, and pre/post- processing time efficiency coming from the use of different numerical methods.
 
Assoc. Prof. Dr. Roberto Citarella
Dr. Eng. Venanzio Giannella
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. Applied Sciences 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 2400 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

  • fatigue
  • fracture
  • BEM
  • FEM
  • meshless methods
  • hybrid approaches
  • structural integrity
  • damage tolerance
  • peridynamics
  • crack propagation

Published Papers (6 papers)

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Editorial

Jump to: Research

3 pages, 172 KiB  
Editorial
Advanced Numerical Approaches for Crack Growth Simulation
by Roberto Citarella and Venanzio Giannella
Appl. Sci. 2023, 13(4), 2112; https://0-doi-org.brum.beds.ac.uk/10.3390/app13042112 - 07 Feb 2023
Viewed by 881
Abstract
The purpose of this Special Issue was to highlight the latest developments in the usage of advanced numerical approaches for crack growth simulation [...] Full article
(This article belongs to the Special Issue Advanced Numerical Approaches for Crack Growth Simulation)

Research

Jump to: Editorial

16 pages, 8050 KiB  
Article
Further Development of 3D Crack Growth Simulation Program to Include Contact Loading Situations
by Tintu David Joy, Deborah Weiß, Britta Schramm and Gunter Kullmer
Appl. Sci. 2022, 12(15), 7557; https://0-doi-org.brum.beds.ac.uk/10.3390/app12157557 - 27 Jul 2022
Cited by 2 | Viewed by 1391
Abstract
Crack growth in structures depends on the cyclic loads applied on it, such as mechanical, thermal and contact, as well as residual stresses, etc. To provide an accurate simulation of crack growth in structures, it is of high importance to integrate all kinds [...] Read more.
Crack growth in structures depends on the cyclic loads applied on it, such as mechanical, thermal and contact, as well as residual stresses, etc. To provide an accurate simulation of crack growth in structures, it is of high importance to integrate all kinds of loading situations in the simulations. Adapcrack3D is a simulation program that can accurately predict the propagation of cracks in real structures. However, until now, this three-dimensional program has only considered mechanical loads and static thermal loads. Therefore, the features of Adapcrack3D have been extended by including contact loading in crack growth simulations. The numerical simulation of crack propagation with Adapcrack3D is generally carried out using FE models of structures provided by the user. For simulating models with contact loading situations, Adapcrack3D has been updated to work with FE models containing multiple parts and necessary features such as coupling and surface interactions. Because Adapcrack3D uses the submodel technique for fracture mechanical evaluations, the architecture of the submodel is also modified to simulate models with contact definitions between the crack surfaces. This paper discusses the newly implemented attribute of the program with the help of illustrative examples. The results confirm that the contact simulation in Adapcrack3D is a major step in improving the functionality of the program. Full article
(This article belongs to the Special Issue Advanced Numerical Approaches for Crack Growth Simulation)
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15 pages, 11492 KiB  
Article
Experimental-Numerical Investigation of a Steel Pipe Repaired with a Composite Sleeve
by Saeid Ansari Sadrabadi, Amin Dadashi, Sichen Yuan, Venanzio Giannella and Roberto Citarella
Appl. Sci. 2022, 12(15), 7536; https://0-doi-org.brum.beds.ac.uk/10.3390/app12157536 - 27 Jul 2022
Cited by 4 | Viewed by 1659
Abstract
Pressure vessels are subjected to deterioration and damage, which can significantly reduce their strength and loading capabilities. Among several procedures nowadays available to repair damaged steel pipelines, composite-repairing systems have become popular over the past few years to restore the loading capacity of [...] Read more.
Pressure vessels are subjected to deterioration and damage, which can significantly reduce their strength and loading capabilities. Among several procedures nowadays available to repair damaged steel pipelines, composite-repairing systems have become popular over the past few years to restore the loading capacity of damaged pipelines. This study reports a numerical-experimental investigation performed for a composite-repaired pipeline made of API 5L X60 steel. An experimental burst test was carried out on a 4 m long pipe section, closed by two lateral caps, and tested up to failure by means of high-pressure water. In parallel, the test was numerically replicated through a FEM model of the composite-repaired steel tank, allowing for a cross-comparison of results. It was found that the composite repairing system has almost eliminated both the noteworthy thickness reduction of 80% and the related stress concentrations in the pipe body. These outcomes allow for a better understanding of these repairing procedures in order to drive their subsequent optimization. Full article
(This article belongs to the Special Issue Advanced Numerical Approaches for Crack Growth Simulation)
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20 pages, 6303 KiB  
Article
Determination of the Crack Propagation Direction in Mixed-Mode Missions due to Cyclic Loading
by Jury Rodella, Guido Dhondt, Paul Köster, Manuela Sander and Steven Piorun
Appl. Sci. 2021, 11(4), 1673; https://0-doi-org.brum.beds.ac.uk/10.3390/app11041673 - 13 Feb 2021
Cited by 4 | Viewed by 1807
Abstract
The evaluation of cyclic crack propagation due to missions with varying mixed-mode conditions is an important topic in industrial applications. This paper focuses on the determination of the resulting propagation direction. Two criteria are analyzed, the dominant step criterion and the averaged angle [...] Read more.
The evaluation of cyclic crack propagation due to missions with varying mixed-mode conditions is an important topic in industrial applications. This paper focuses on the determination of the resulting propagation direction. Two criteria are analyzed, the dominant step criterion and the averaged angle criterion, and compared with experimental data from tension-torsion tests with and without phase shift. The comparison shows that the dominant step criterion yields better results for small to moderate values of the phase shift. For a large phase shift of 90°, the experimental results are not very consistent, and therefore, no decisive conclusions can be drawn. Full article
(This article belongs to the Special Issue Advanced Numerical Approaches for Crack Growth Simulation)
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22 pages, 6506 KiB  
Article
On the Adoption of Global/Local Approaches for the Thermomechanical Analysis and Design of Liquid Rocket Engines
by Michele Ferraiuolo, Michele Leo and Roberto Citarella
Appl. Sci. 2020, 10(21), 7664; https://0-doi-org.brum.beds.ac.uk/10.3390/app10217664 - 29 Oct 2020
Cited by 11 | Viewed by 1842
Abstract
Large Liquid Rocket Engines for Aerospace applications usually need to be cooled regeneratively since they are characterized by high pressure levels and heat flux with the presence, in the inner structure, of very high thermal gradients—thus necessitating the adoption of elastic-plastic nonlinear material [...] Read more.
Large Liquid Rocket Engines for Aerospace applications usually need to be cooled regeneratively since they are characterized by high pressure levels and heat flux with the presence, in the inner structure, of very high thermal gradients—thus necessitating the adoption of elastic-plastic nonlinear material models to study the thermomechanical behavior of the chamber and its service life. Tackling such nonlinearity makes the finite element analyses computationally intensive, particularly so when dealing with three-dimensional models. In these instances, it is highly recommended to adopt optimized numerical approaches that can save computation time while maintaining high levels of accuracy. The aim of the present paper is to implement an iterative coupling technique between two finite element models, a Global linear model and a Local nonlinear one, in the framework of a Global/Local procedure, to improve the accuracy of the numerical simulations. Both conformal and non-conformal meshes at the interface between the Global and the Local models have been considered. The results show that, even with a very few iterations, significant accuracy improvements are achieved. Full article
(This article belongs to the Special Issue Advanced Numerical Approaches for Crack Growth Simulation)
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18 pages, 4491 KiB  
Article
Crack Propagation and Burst Pressure of Pipeline with Restrained and Unrestrained Concentric Dent-Crack Defects Using Extended Finite Element Method
by Allan Okodi, Yong Li, Roger Cheng, Muntaseer Kainat, Nader Yoosef-Ghodsi and Samer Adeeb
Appl. Sci. 2020, 10(21), 7554; https://0-doi-org.brum.beds.ac.uk/10.3390/app10217554 - 27 Oct 2020
Cited by 15 | Viewed by 3324
Abstract
Mechanical damage in form of dents, cracks, gouges, and scratches are common in pipelines. Sometimes, these damages form in proximity of each other and act as one defect in the pipe wall. The combined defects have been found to be more injurious than [...] Read more.
Mechanical damage in form of dents, cracks, gouges, and scratches are common in pipelines. Sometimes, these damages form in proximity of each other and act as one defect in the pipe wall. The combined defects have been found to be more injurious than individual defects. One of the combined defects in pipeline comprises of a crack in a dent, also known as dent-crack defect. This paper discusses the development of finite element models using extended finite element criterion (XFEM) in Abaqus to predict burst pressure of specimens of API X70 pipeline with restrained and unrestrained concentric dent-crack defects. The models are calibrated and validated using results of full-scale burst tests. The effects of crack length, crack depth, dent depth, and denting pressure on burst pressure are investigated. The results show that restrained dent-crack defects with shallow cracks (depth less than 50% wall thickness) inside dents do not affect pipeline operations at maximum allowable operating pressure if crack lengths are less than 200 mm. Releasing restrained dent-cracks when the pressure is at maximum allowable operating pressure can cause propagation of deep cracks (depth of 50% wall thickness or more) longer than 60 mm. However, only very long cracks (200 mm and higher) propagate to burst the pipe. Cracks of depth less than 20% of wall thickness inside dents formed at zero pressure are not propagated by the maximum allowable operating pressure. Dent-crack defects having dents of depth less than 2% outside diameter of pipe behave as plain cracks if the dents are formed at zero denting pressure but are more injurious than plain cracks if the dents are formed in pressurized pipes. Full article
(This article belongs to the Special Issue Advanced Numerical Approaches for Crack Growth Simulation)
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