Results 211 to 220 of about 10,412 (242)
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3D XFEM Modelling of Imperfect Interfaces
2013In this paper, recent contributions to the modelling of coated inclusions by means of an eXtended Finite Element Method are presented. The matrix particle interface is modelled as a finite thickness, imperfect interface. Two approaches are considered: a variational approach inspired to Suquet’s work on asymptotic analysis of thin layers, and an ...
BENVENUTI, Elena +3 more
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International Journal of Computational Methods, 2013
We present an extended radial point interpolation method (XRPIM) for modeling cracks and material interfaces in two-dimensional elasto-static problems. Therefore, partition of unity enrichment is incorporated into RPIM. We employ both step enrichment and crack tip enrichment for cracks.
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We present an extended radial point interpolation method (XRPIM) for modeling cracks and material interfaces in two-dimensional elasto-static problems. Therefore, partition of unity enrichment is incorporated into RPIM. We employ both step enrichment and crack tip enrichment for cracks.
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REgularized XFEM for meso-macro scale problems
2010A meso-macro scale approach based on a REgularized eXtended Finite Element Method (REXFEM) is presented. The macro-scale problem contains an additional length scale, called hereafter meso-scale length, which is smaller than the structural scale. The meso-scale length can represent, for instance, the thickness of the adhesive layer in bonded composites,
BENVENUTI, Elena +1 more
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Dynamic fracture with meshfree enriched XFEM
Acta Mechanica, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Menouillard, Thomas, Belytschko, Ted
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Thermo-anisotropic crack propagation by XFEM
International Journal of Mechanical Sciences, 2015Abstract The extended finite element method (XFEM) is utilized to model the crack propagation in thermo-anisotropic elastic materials. The discontinuity at the crack surface is located and modelled using the level set principle whereas the singularity at the crack tip is handled using special branch enrichment functions derived from the asymptotic ...
Lyazid Bouhala +2 more
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Isogeometric analysis using peridynamics and XFEM
2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018This study presents an approach to couple IsoGeometric Analysis (IGA) with PeriDynamics (PD) and eXtended Finite Element Method (XFEM). It removes the need for mapping from the parent space to the parametric space as part of IGA. The PD points in the parametric space are governed by the kinematics of control points in the physical space. Therefore, the
Kefal, Adnan +4 more
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XFEM for Deformation Theory of Plasticity
PAMM, 2015AbstractIn this work, an approach is presented to improve global accuracy properties for physically non‐linear problems in the frame of elastoplasticity. The work is motivated by the fact that convergence characteristics of a finite element solution are dominated by the regularity of the exact solution. For a material undergoing inelastic deformations,
Samir Omerović, Thomas‐Peter Fries
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Strain smoothing in FEM and XFEM
Computers & Structures, 2010We present in this paper recent achievements realised on the application of strain smoothing in finite elements and propose suitable extensions to problems with discontinuities and singularities. The numerical results indicate that for 2D and 3D continuum, locking can be avoided.
Stéphane P.A. Bordas +7 more
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XFEM for Fracture Analysis in 2D Anisotropic Elasticity
Advances in Applied Mathematics and Mechanics, 2016AbstractIn this paper, a method is proposed for extracting fracture parameters in anisotropic thermoelasticity cracking via interaction integral method within the framework of extended finite element method (XFEM). The proposed method is applied to linear thermoelastic crack problems.
Jia, Honggang, Nie, Yufeng, Li, Junlin
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Numerical Simulation Based on XFEM
2018Cracks, including radial and circumferential cracks, will appear on the surface of the glass material after the head impacts on the windshield. The fracture characteristics of a windshield are widely recognized as among the most important factors in automotive crashworthiness.
Jun Xu, Yibing Li
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