Modelling Damage and Failure in Adhesive Joints Using A Combined XFEM-Cohesive Element Methodology

Mubashar, Aamir; Ashcroft, IA; Crocombe, A.D.

doi:10.1080/00218464.2013.826580

Cited by 52 publications

(13 citation statements)

References 49 publications

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“…The time period over which M t versus the root square of immersion time curve is linear, depends on various factors such as the material type, the conditioning environment and temperature . The values of moisture diffusion coefficient were determined for the neat and nanocomposite samples using Eq .…”

Section: Gravimetric Results and Discussionmentioning

confidence: 99%

Effects of silicon carbide nanoparticles and multi‐walled carbon nanotubes on water uptake and resultant mechanical properties degradation of polymer nanocomposites immersed in hot water

Khoramishad

Alizadeh

2017

Polymer Composites

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Polymeric materials are prone to moisture attack when they are immersed in water or exposed to moisture. This paper aims to study the effects of multi‐walled carbon nanotubes (MWCNT) and silicon carbide (SiC) nanofillers on reinforcing the epoxy polymer against water uptake and resultant degradations of mechanical properties. Therefore, the neat epoxy and nanocomposite samples containing various weight percentages of nanofillers were fabricated and immersed in deionized hot water. The gravimetric measurements over various time intervals showed that adding MWCNTs and SiCs to epoxy caused the polymer water uptake to decrease by 50% and 46%, respectively, at initial stage of water absorption and by 26% and 18% at saturation. The epoxy water diffusion rate was reduced by 58.4% and 56.9% when MWCNTs or SiCs were introduced into the polymer, respectively. Moreover, the epoxy strength degradation due to water uptake was declined by 32% and 16% when MWCNTs and SiCs were added into the polymer, respectively, at saturation. Whereas, the epoxy stiffness degradation of the epoxy/MWCNTs and epoxy/SiCs nanocomposites were 27% and 19% lower than the neat epoxy, respectively. Furthermore, water uptake in the neat epoxy and nanocomposites was modeled using a finite element model. POLYM. COMPOS., 39:E883–E890, 2018. © 2017 Society of Plastics Engineers

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Section: Gravimetric Results and Discussionmentioning

confidence: 99%

Effects of silicon carbide nanoparticles and multi‐walled carbon nanotubes on water uptake and resultant mechanical properties degradation of polymer nanocomposites immersed in hot water

Khoramishad

Alizadeh

2017

Polymer Composites

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“…The XFEM is based on the concept of partition of unity, and its implementation in the FEM can be accomplished by introducing local enrichment functions for the displacements near the crack tip, allowing damage to grow and respective separation between the cracked faces [20]. Mubashar et al [21] carried out a study on the damage and failure modelling of adhesively-bonded SLJ with spew fillets at the overlap ends, combining two methods: XFEM (to perform the modelling of the crack in the fillet region where the crack path is unknown) and CZM (applied to model crack progression and damage along the adhesive bond interface). The numerical analysis was performed in Abaqus ® .…”

Section: Introductionmentioning

confidence: 99%

Extended Finite Element Modelling of Adhesive Joints Under Peel Loads

Moreira

Campilho

Feup³

2019

ANN_UDJG_AWET

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The use of adhesive bonds greatly increased in industrial applications, as they have multiple advantages compared to other more traditional bonding methods (fastened, welded and riveted joints). The number of approaches to predict the strength of adhesive joints has increased over the years. The eXtended Finite Element Method (XFEM) is a recent variant of the (Finite Element Method) FEM to model damage growth in structures, although it is yet seldom studied within the context of bonded joints. This work consists of an experimental and XFEM analysis of aluminium alloy T-joints, adhesively-bonded with three adhesive types. A parametric study is undertaken regarding the curved adherends' thickness (t P2), with values between 1 and 4 mm. The adhesives Araldite ® AV138, Araldite ® 2015 and the Sikaforce ® 7752 were tested. A comparative analysis between the different joints conditions was performed, too. The XFEM predictive capabilities were tested with different damage initiation criteria. It was found that, provided that the modelling conditions are properly set, accurate numerical results can be found.

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Section: Introductionmentioning

confidence: 99%

Use of the XFEM for the design of adhesively-bonded T-joints

Campilho

Moreira²

2019

Frattura Ed Integrità Strutturale

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The use of adhesive bonds greatly increased in industrial applications, as they have multiple advantages compared to other more traditional bonding methods (fastened, welded and riveted joints). The number of approaches to predict the strength of adhesive joints has increased over the years. The eXtended Finite Element Method (XFEM) is a recent variant of the (Finite Element Method) FEM to model damage growth in structures, although it is yet seldom studied within the context of bonded joints. This work consists of an experimental and XFEM analysis of aluminium alloy T-joints, adhesively-bonded with three adhesive types. A parametric study is undertaken regarding the curved adherends' thickness (t P2), with values between 1 and 4 mm. The adhesives Araldite ® AV138 (strong but brittle), Araldite ® 2015 (less strong but moderately ductile) and the Sikaforce ® 7752 (with the smallest strength but highly ductile) were tested. A comparative analysis between the different joints conditions was undertaken by plotting peel (y) and shear (xy) stresses, and analysing the damage variable. The XFEM predictive capabilities were tested with different damage initiation and propagation criteria. It was found that, provided that the modelling conditions are properly set, accurate numerical results can be found.

show abstract

Modelling Damage and Failure in Adhesive Joints Using A Combined XFEM-Cohesive Element Methodology

Cited by 52 publications

References 49 publications

Effects of silicon carbide nanoparticles and multi‐walled carbon nanotubes on water uptake and resultant mechanical properties degradation of polymer nanocomposites immersed in hot water

Effects of silicon carbide nanoparticles and multi‐walled carbon nanotubes on water uptake and resultant mechanical properties degradation of polymer nanocomposites immersed in hot water

Extended Finite Element Modelling of Adhesive Joints Under Peel Loads

Use of the XFEM for the design of adhesively-bonded T-joints

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