References of "Peng, Xuan"
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See detailLinear elastic fracture simulation directly from CAD: 2D NURBS-based implementation and role of tip enrichment
Peng, Xuan; Atroshchenko, Elena; Kerfriden, Pierre et al

in International Journal of Fracture (2016)

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See detailIsogeometric boundary element methods for three dimensional static fracture and fatigue crack growth
Peng, Xuan; Atroshchenko, Elena; Kerfriden, Pierre et al

in Computer Methods in Applied Mechanics & Engineering (2016)

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See detail3D fatigue fracture modeling by isogeometric boundary element methods
Peng, Xuan; Atroshchenko, Elena; Kerfriden, Pierre et al

Scientific Conference (2016, April 01)

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See detailIsogeometric boundary element methods for linear elastic fracture mechanics
Peng, Xuan; Atroshchenko, Elena; Kerfriden, Pierre et al

Report (2016)

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See detailC++ implementation of 2D PHT splines
Peng, Xuan; Bordas, Stéphane UL

Learning material (2016)

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See detail2d PHT splines implementation in C++
Peng, Xuan; Bordas, Stéphane UL

Learning material (2016)

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See detailIsogeometric boundary element methods for three dimensional fatigue crack growth
Peng, Xuan; Atroshchenko, Elena; Kerfriden, Pierre et al

Report (2015)

The isogeometric boundary element method (IGABEM) based on NURBS is adopted to model fracture problem in 3D. The NURBS basis functions are used in both crack representation and physical quantity ... [more ▼]

The isogeometric boundary element method (IGABEM) based on NURBS is adopted to model fracture problem in 3D. The NURBS basis functions are used in both crack representation and physical quantity approximation. A stable quadrature scheme for singular integration is proposed to enhance the robustness of the method in dealing with highly distorted element. The convergence study in crack opening displacement is performed for penny-shaped crack and elliptical crack. Two ways to extract stress intensity factors (SIFs), the contour $M$ integral and virtual crack closure integral, are implemented based on the framework of dual integral equations. An algorithm is outlined and validated to be stable for fatigue crack growth, thanks to the smoothness not only in crack geometry but also in stress/SIFs solution brought by IGABEM. [less ▲]

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See detailGeometry-Independent Field approximaTion (GIFT) for spline based FEM for Linear Elasticity: a Diffpack implementation
Hossain, Md Naim; Xu, Gang; Bordas, Stéphane UL et al

Scientific Conference (2015, June 01)

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See detailAn isogeometric boundary element method for fracture modeling
Peng, Xuan; Atroshchenko, Elena; Bordas, Stéphane UL

Presentation (2015, May)

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See detailCrack growth analysis by a NURBS-based isogeometric boundary element method
Peng, Xuan; Atroshchenko, Elena; Simpson, Robert et al

Scientific Conference (2014, July)

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See detailCrack growth analysis by a NURBS-based isogeometric boundary element metyhod
Peng, Xuan; Atroshchenko, Elena; Simpson, Robert et al

Presentation (2014, July)

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See detailStress analysis, damage tolerance assessment and shape optimisation without meshing
Hale, Jack UL; Bordas, Stéphane UL; Peng, Xuan et al

Poster (2014, June 24)

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See detailDamage tolerance assessment directly from CAD: (extended) isogeometric boundary element methods
Peng, Xuan; Atroshchenko, Elena; Bordas, Stéphane UL

Scientific Conference (2014, June)

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See detailA two-dimensional isogeometric boundary element method for linear elastic fracture
Peng, Xuan; Atroshchenko, Elena; Kulasegaram, Sivakumar et al

Report (2014)

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See detailA Two-Dimensional Isogeometric Boundary Element Method For Linear Elastic Fracture
Peng, Xuan; AtroShchenko, Elena; Simpson, Robert et al

Scientific Conference (2014, January)

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See detailAn extended finite element method (XFEM) for linear elastic fracture with smooth nodal stress
Peng, Xuan; Kulasegaram, Sivakumar; Bordas, Stéphane UL et al

in Engineering Fracture Mechanics (2014)

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See detailDamage tolerance assessment directly from CAD: (extended) isogeometric boundary element methods (XIGABEM)
Peng, Xuan; Atroshchenko, Elena; Bordas, Stéphane UL

Scientific Conference (2014)

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See detailBoundary Element Method with NURBS-geometry and independent field approximations in plane elasticity
Atroshchenko, Elena; Peng, Xuan; Hale, Jack et al

Scientific Conference (2014)

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See detailsmooth nodal stress in the XFEM for crack propagation simulations
Peng, Xuan; Bordas, Stéphane UL; Natarajan, Sundararajan

Scientific Conference (2013, September)

In this paper, we present a method to achive smooth nodal stresses in the XFEM without post-processing. This method was developed by borrowing ideas from ``twice interpolating approximations'' (TFEM) [1 ... [more ▼]

In this paper, we present a method to achive smooth nodal stresses in the XFEM without post-processing. This method was developed by borrowing ideas from ``twice interpolating approximations'' (TFEM) [1]. The salient feature of the method is to introduce an ``average'' gradient into the construction of the approximation, resulting in improved solution accuracy, both in the vicinity of the crack tip and in the far field. Due to the high order polynomial basis provided by the interpolants, the new approximation enhances the smoothness of the solution without requiring an increased number of degrees of freedom. This is particularly advantageous for low-order elements and in fracture mechanics, where smooth stresses are important for certain crack propagation criteria, e.g. based on maximum principal stresses. Since the new approach adopts the same mesh discretization, i.e. simplex meshes, it can be easily extended into various problems and is easily implemented. We discuss the increase in the bandwidth which is the major drawback of the present method and can be somewhat alleviated by using an element-by-element solution strategy. Numerical tests show that the new method is as robust as XFEM, considering precision, model size and post-processing time. By comparing in detail the behaviour of the method on crack propagation examples, we can conclude that for two-dimensional problems, the proposed method tends to be an efficient alternative to the classical XFEM [2][3] especially when local, stress-based propagation criteria are used. [less ▲]

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See detailA two-dimensional isogeometric boundary element method for linear elastic fracture: a path towards damage tolerance analysis without meshing
Peng, Xuan; Atroshchenko, Elena; Kulasegaram, Sivakumar et al

Report (n.d.)

Detailed reference viewed: 115 (7 UL)