Numerical Modeling of a 3D elliptical crack in gas metallic pipeline by coupling X-FEM and Volumetric approach

Montassir, Soufiane; Moustabchir, Hassane; Elkhalfi, Ahmed

doi:10.1109/iraset52964.2022.9737740

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B-spline For Linear Elastic Fracture Mechanics1

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2023

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“…The crack modeling problem relates to the way of capturing the discontinuity and the crack tip. To overcome this issue, X-FEM appeared and it is based on enriching the approximation displacement [19,20,21]. In this study, the same concept was applied but with the X-IGA.…”

Section: B-spline For Linear Elastic Fracture Mechanicsmentioning

confidence: 99%

Application of NURBS in the Fracture Mechanics Framework to Study the Stress Intensity Factor

Montassir

Moustabchir

Elkhalfi

2023

Stat., optim. inf. comput.

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In this investigation, we successfully employed the Non-Uniform Rational B-spline (NURBS) to study the fracture mechanics. the NURBS functions are very popular in the design field (CAD model) and it is used as an alternative to Lagrange interpolation polynomials. The extended isogeometric analysis based on this basis function is used to evaluate the stress intensity factors (SIFs) in order to control the crack propagation. For various crack lengths, SIFs were calculated to validate the accuracy of this technique. The results obtained are in good agreement with the available techniques as CFEM, X-FEM.

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Section: B-spline For Linear Elastic Fracture Mechanicsmentioning

confidence: 99%