Fatigue crack growth analysis of a homogeneous plate in the presence of multiple defects using extended isogeometric analysis

Bhardwaj, Gagandeep; Singh, I.V.

doi:10.1007/s40430-014-0232-1

Cited by 25 publications

(9 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Domain-based interaction integral is used here for the extraction of discrete values of the SIFs ( K I and K II ) . 51,52 For all the cases considered for this paper including a plate with holes, plate with inclusions, plate reinforced with SWCNTs or plate reinforced with MWCNTs, the domain size at the tip of the crack is kept constant since it governs the values of SIF. To accurately capturing the discontinuities near the crack, it is tried to keep the domain size as small as possible.…”

Section: Problem Formulationmentioning

confidence: 99%

Influence of discontinuities on the fracture behaviour of CNT reinforced composites subjected to thermo-mechanical load using XIGA

Yadav

Bhardwaj

Godara

2022

The Journal of Strain Analysis for Engineering Design

View full text Add to dashboard Cite

This paper is aimed to investigate the fracture behaviour of carbon nanotube (CNT) reinforced composite exposed to the thermo-mechanical environment in the presence of discontinuities using the extended isogeometric analysis (XIGA) method. The study focuses on finding the effects of discontinuities present in a finite plate with a pre-existing crack, on the stress intensity factors (SIFs). The mandatory equivalent mechanical and thermal properties are assessed with the help of various micromechanics models. Two types of CNTs are assumed to be reinforced in the epoxy-matrix: single-walled carbon nanotube (SWCNT) and multi-walled carbon nanotube (MWCNT). The CNT reinforced composite is examined for varying volume percentages of CNTs reinforcement. A comparative study is provided to see the influence of mechanical and coupled thermo-mechanical load on SIFs. Adiabatic crack is taken into account for the computational simulation for thermal loading condition. The interaction integral method is used for the extraction of SIFs. The findings of the test reveal that with the rise in the volume percentage of CNTs, the properties such as fracture energy and fracture toughness also rise. Moreover, the fracture of CNT reinforced composites is delayed with the increased content of CNT. The results establish the profound influence of holes on SIFs than the inclusions.

show abstract

Section: Problem Formulationmentioning

confidence: 99%

Influence of discontinuities on the fracture behaviour of CNT reinforced composites subjected to thermo-mechanical load using XIGA

Yadav

Bhardwaj

Godara

2022

The Journal of Strain Analysis for Engineering Design

View full text Add to dashboard Cite

show abstract

“…, 1997; Musivand-Arzanfudi and Hosseini-Toudeshky, 2009), the isogeometric analysis method (IGA) (Choi and Cho, 2014; Khademalrasoul, 2018; Khademalrasoul and Naderi, 2015; Verhoosel et al. , 2011) and the extended isogeometric analysis method (XIGA) (Bhardwaj and Singh, 2015; Bhardwaj et al. , 2016; Ghorashi et al.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, some recent studies have made attempts to explain the concept of numerical implementation of strong and soft discontinuities in the numerical solution space. The standard finite element method (FEM) (Gray et al, 2003), the extended finite element method (XFEM), the meshless methods (Belytschko and Fleming, 1999;Atluri and Zhu, 1998;Belytschko et al, 1996;Chen et al, 2006;Fleming et al, 1997;Musivand-Arzanfudi and Hosseini-Toudeshky, 2009), the isogeometric analysis method (IGA) (Choi and Cho, 2014;Khademalrasoul, 2018;Khademalrasoul and Naderi, 2015;Verhoosel et al, 2011) and the extended isogeometric analysis method (XIGA) (Bhardwaj and Singh, 2015;Bhardwaj et al, 2016;Ghorashi et al, 2012;Singh et al, 2018) have been employed to investigate crack propagation. Also from a diversity of research in fracture phenomenon, the brittle crack growth is of fundamental significance in the durability of a structure.…”

Section: Introductionmentioning

confidence: 99%

Forward and backward mixed-mode crack estimation using artificial neural network

Khademalrasoul

Hatampour

Oulapour

et al. 2022

IJSI

View full text Add to dashboard Cite

PurposeIn this manuscript, the authors aimed to demonstrate the influences of influential parameters in mixed-mode crack propagation phenomenon. The authors attempted to cover almost all surrounding issues of this subject as the authors know simulating of propagating cracks as internal strong discontinuity is a complicated issue.Design/methodology/approachIn this manuscript, the authors demonstrated the influences of influential parameters in mixed-mode crack propagation phenomenon. The authors attempted to cover almost all surrounding issues of this subject as the authors know simulating of propagating cracks as internal strong discontinuity is a complicated issue. Furthermore, three different scenarios for crack growth are considered. In reality, edge-cracked plate, center-cracked plate and cracked plate in the presence of void and inclusion are studied. In fact, by designing suitable artificial neural network's (ANN) architectures all the three aforementioned conditions are trained and estimated through those architectures with very good agreement with input data. Also by conducting a series of sensitivity analysis, the most affecting factors in mixed-mode crack propagation in different situations are demonstrated. The obtained results are very interesting and useful for other researchers and also the authors hope the results would be cited by researchers.FindingsThe influential parameters on mixed-mode crack propagation were found in this paper.Originality/valueThe computer code using MATLAB was prepared to study the mixed-mode crack paths. Also using ANNs toolbox, the crack path estimation was investigated.

show abstract

“…Therefore, this method has the advantages of both XFEM and IGA, which are summarized by the ability to represent complex geometries independently of any discontinuities and without explicit meshing to obtain solutions with higher orders. Some applications in fracture mechanics have been checked by the XIGA, such as in the cases of homogeneous materials (Ghorashi et al, 2012;Bhardwaj and Singh, 2015), functionally graded material (Bhardwaj et al, 2015a,c) and bimaterial interfaces (Bhardwaj et al, 2015b;Jia et al, 2015), where the non-uniform rational B-splines (NURBS) are used. Also, orthotropic media have been studied using T-spline based XIGA .…”

Section: Introductionmentioning

confidence: 99%

Crack analysis in bimaterial interfaces using T-spline based XIGA

Habib

Belaidi

2017

jtam

View full text Add to dashboard Cite

Analysis-suitable T-splines are used for the modeling and analyzing of cracks in bimaterial interfaces within the framework of an extended isogeometric analysis (XIGA). The crack tip enrichment functions of bimaterial interface cracks are implemented to reproduce singular fields, and the signed distance functions are used to treat the crack face and the interface in the models. A compatible local refinement algorithm is applied to refine location of the crack and the interface, which helps one to avoid produce excessive propagation of control points. The mixed mode stress intensity factors (SIFs) which are evaluated by the interaction integral (M-integral) are used as analysis parameters. Numerical simulations are performed to analyze the problem and to examine the efficiency of the proposed method. The obtained results are compared with other available results.

show abstract

Fatigue crack growth analysis of a homogeneous plate in the presence of multiple defects using extended isogeometric analysis

Cited by 25 publications

References 48 publications

Influence of discontinuities on the fracture behaviour of CNT reinforced composites subjected to thermo-mechanical load using XIGA

Influence of discontinuities on the fracture behaviour of CNT reinforced composites subjected to thermo-mechanical load using XIGA

Forward and backward mixed-mode crack estimation using artificial neural network

Crack analysis in bimaterial interfaces using T-spline based XIGA

Contact Info

Product

Resources

About