Evaluating Fracture Toughness of Rolled Zircaloy-2 at Different Temperatures Using XFEM

Goel, Shivani; Kumar, Nikhil; Fuloria, Devasri; Jayaganthan, R.; Singh, I.V.; Srivastava, D.; Dey, G.K.; Saibaba, N.

doi:10.1007/s11665-016-2241-y

Cited by 10 publications

(8 citation statements)

References 39 publications

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“…In XFEM, the conventional finite element approximation is improved by using an extrinsic PU approach to introduce discontinuities within the problem. In the past two decades, XFEM has been widely used to model crack growth [19,31]. The cracks in XFEM mesh are defined by enriching the elements with an additional degree of freedom.…”

Section: Xfem Methodologymentioning

confidence: 99%

“…The shape function in finite elements follows the PU property. This property states that the summation of a specific element's shape function remains unity in all locations within the specified element [19].…”

Section: Xfem Methodologymentioning

confidence: 99%

“…In FEA, fracture mechanics problems are defined using conformal meshing. Accurate prediction of the stress-strain field around the crack tip in such techniques requires continuous mesh refinement with crack growth, and this leads to higher computational time [19]. So, in order to minimize the mesh refinement, Belytschko and Black [20] proposed a new approach in which cracks were independent of the meshing and defined by using an independent discontinuous enrichment function.…”

Section: Introductionmentioning

confidence: 99%

“…So, in order to minimize the mesh refinement, Belytschko and Black [20] proposed a new approach in which cracks were independent of the meshing and defined by using an independent discontinuous enrichment function. This method was further modified and widely known as the extended finite element method (XFEM) [19,21]. XFEM uses partition of unity to eliminate the need for conformal mesh [22,23].…”

Section: Introductionmentioning

confidence: 99%

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XFEM Simulation of Tensile and Fracture Behavior of Ultrafine-Grained Al 6061 Alloy

Gairola

Jayaganthan

2021

Metals

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In the present work, the tensile and fracture behavior of ultra-fine grained (UFG) Al 6061 alloy was simulated using extended finite element method (XFEM). UFG Al 6061 alloy processed by cryorolling (CR) and accumulative roll bonding (ARB) was investigated in this work. Numerical simulations of two-dimensional and three-dimensional models were performed in “Abaqus 6.14” software using an elastic-plastic approach, and the results obtained were validated with the experimental results. The specimens corresponding to the three-point bend test, compact tension test with center crack, and double edge cracks were analyzed using XFEM (eXtended Finite Element Method) approach. In XFEM, the partition of unity (PU) was used to model a crack in the standard finite element mesh. The tensile and fracture properties obtained from the simulation were in tandem with the experimental data. UFG Al alloy showed higher tensile strength and fracture toughness compared to their bulk solution treated counterparts. Fracture toughness was measured in terms of stress intensity factor and J integral. In CR Al alloys, with increasing thickness reduction, an increase in stress intensity factor and a decrease in the J integral was observed. This behavior is attributed to the increase in strength and decrease in ductility of CR samples with increasing thickness reduction. In ARB Al alloys, the strength and ductility have increased with an increase in number of cycles. It also revealed an increase in both the stress intensity factor and J integral in ARB processed Al alloys with increase in number of cycles, as evident from XFEM simulation results.

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Section: Xfem Methodologymentioning

confidence: 99%

Section: Xfem Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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XFEM Simulation of Tensile and Fracture Behavior of Ultrafine-Grained Al 6061 Alloy

Gairola

Jayaganthan

2021

Metals

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“…Eftekhari et al [10] have proposed an XFEM multiscale approach for investigating the fracture behaviour of carbon nanotube reinforced concrete specimen. Goel et al [11] have applied the XFEM to investigate the fracture toughness of the rolled Zircaloy-2 at different temperatures. Lee and his co-workers [12][13] have used the XFEM to evaluate the fracture toughness of brittle materials by the use of indentation method.…”

Section: Introductionmentioning

confidence: 99%

Fracture Toughness Testing and Prediction for Ceramic Materials Using in Large-Flow-Rate Emulsion Pumps

Li¹

2019

IJMEA

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Fracture toughness (K IC) tests have been carried out on single edge precracked beam specimens with dimensions in accordance with ISO15732 requirements for two types of zirconia and one type of alumina, i.e. ZrO 2-1, ZrO 2-2 and Al 2 O 3. Experimental determinations of K IC for the two zirconia and one alumina materials are 12.18 MPa•m 1/2 , 16.35 MPa•m 1/2 and 4.99 MPa•m 1/2 , respectively. The median rank method is used to calculate the probability of fracture, F(K IC) of the three cermaic materials for representing the experimental results. The SEM analysis on fracture surfaces of ZrO2-1 materials is carried out, which indicates the fracture in ZrO 2-1 material occurred at the interior of the grain associated with interior stress distribution with principal components of ZrO 2 and SiO 2. Th extended finite element method (XFEM), based on the linear elastic fracture mechanics in conjuciton with a bilinear traction-separation damage law, is used to simulate the progressive crack growth process in the SEPB specimens. The XFEM predicted K IC results are compared with the corresponding experimental data. The XFEM approach overpredicts the K IC values, from 10.4% to 25.6%, for the three ceramic materials. The possible reasons, in the aspect of loading conditions and contact assumptions, for the difference between the predicted and tested results are also discussed.

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Evaluation of Strain Controlled Fatigue and Crack Growth Behaviour of Al–3.4Mg Alloy

Kumar

Singh

2019

Structural Integrity

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Evaluating Fracture Toughness of Rolled Zircaloy-2 at Different Temperatures Using XFEM

Cited by 10 publications

References 39 publications

XFEM Simulation of Tensile and Fracture Behavior of Ultrafine-Grained Al 6061 Alloy

XFEM Simulation of Tensile and Fracture Behavior of Ultrafine-Grained Al 6061 Alloy

Fracture Toughness Testing and Prediction for Ceramic Materials Using in Large-Flow-Rate Emulsion Pumps

Evaluation of Strain Controlled Fatigue and Crack Growth Behaviour of Al–3.4Mg Alloy

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