نتایج جستجو برای: extended finite element method

تعداد نتایج: 2094778  

Journal: :SIAM J. Scientific Computing 2015
Christoph Lehrenfeld

We consider a standard model for mass transport across an evolving interface. The solution has to satisfy a jump condition across an evolving interface. In the recent paper [C. Lehrenfeld, A. Reusken, SIAM J. Num. Anal., 51 (2013)] a new finite element discretization method for this mass transport problem is presented and analyzed. This method is based on a space-time approach in which a discon...

2012
Christoph Lehrenfeld Arnold Reusken CHRISTOPH LEHRENFELD

We consider a standard model for mass transport across an evolving interface. The solution has to satisfy a jump condition across an evolving interface. We present and analyze a finite element discretization method for this mass transport problem. This method is based on a space-time approach in which a discontinuous Galerkin (DG) technique is combined with an extended finite element method (XF...

Journal: :مهندسی عمران شریف 0
محمد تقی کاظمی دانشکده ی مهندسی عمران ، دانشگاه صنعتی شریف علی رضا فرقانی دانشکده ی مهندسی عمران ، دانشگاه صنعتی شریف امیر رضا خویی دانشکده ی مهندسی عمران ، دانشگاه صنعتی شریف

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2002
N. Sukumar

A numerical technique for planar three-dimensional fatigue crack growth simulations is proposed. The new technique couples the extended finite element method (X-FEM) to the fast marching method (FMM). In the X-FEM, a discontinuous function and the two-dimensional asymptotic crack-tip displacement fields are added to the finite element approximation to account for the crack using the notion of p...

Journal: :CoRR 2017
Zhenxing Cheng Hu Wang

This study presents a fast and exact computational method for crack propagation which is based on the extended finite element method (X-FEM). It is well known that the X-FEM has been developed to be an important numerical method for crack propagation. However, there are still some limitations on the computational cost due to the requirements of very refined meshes and very small iteration step ...

Journal: :SIAM J. Numerical Analysis 2013
Christoph Lehrenfeld Arnold Reusken

We consider a standard model for mass transport across an evolving interface. The solution has to satisfy a jump condition across an evolving interface. We present and analyze a finite element discretization method for this mass transport problem. This method is based on a space-time approach in which a discontinuous Galerkin (DG) technique is combined with an extended finite element method (XF...

Journal: :Computers & Mathematics with Applications 2014
Ferdinando Auricchio Daniele Boffi Lucia Gastaldi Adrien Lefieux Alessandro Reali

In the present paper we consider a 1D Poisson model characterized by the presence of an interface, where a transmission condition arises due to jumps of the coefficients. We aim at studying finite element methods with meshes not fitting such an interface. It is well known that when the mesh does not fit the material discontinuities the resulting scheme provides in general lower order accurate s...

Mirzaee, M., pourkamali Anaraki, A,

The extended finite element method (X-FEM) is a numerical method for modeling discontinuties, such as cracks, within the standard finite element framework. In X-FEM, special functions are added to the finite element approximation. For crack modeling in linear elasticity, appropriate functions are used for modeling discontinuties along the crack length and simulating the singularity in the crack...

Rapid development of engineering activities expands through a variety of rock engineering processes such as drilling, blasting, mining and mineral processing. These activities require rock dynamic fracture mechanics method to characterize the rock behavior. Dynamic fracture toughness is an important parameter for the analysis of engineering structures under dynamic loading. Several experimental...

Journal: :Association of Arab Universities Journal of Engineering Sciences 2019

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