extended finite element method theory and applications pdf

Extended Finite Element Method Theory And Applications Pdf

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Get PDF. Study Material download is a top website for engineering student, top website for kids, top website for 11th and 12th students, top website for anna university engineering students, provide study material lecture notes for arts and science student and law students, Tags : Book Finite Element Methods: Basic Concepts and Applications Pdf download M. The book gives a clear picture of structural, torsion, free-vibration, heat transfer and fluid flow problems. What is the basic of finite element method? Finite Element Method January 12, Prof.

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Extended Finite Element Method

Extended Finite Element Method provides an introduction to the extended finite element method XFEM , a novel computational method which has been proposed to solve complex crack propagation problems. The book helps readers understand the method and make effective use of the XFEM code and software plugins now available to model and simulate these complex problems. The book explores the governing equation behind XFEM, including level set method and enrichment shape function. The authors outline a new XFEM algorithm based on the continuum-based shell and consider numerous practical problems, including planar discontinuities, arbitrary crack propagation in shells and dynamic response in 3D composite materials. He has published over papers in leading scientific journals. He has published over 60 papers, mostly relating to computational multi-scale mechanics, plasticity, damage and fracture mechanics. We are always looking for ways to improve customer experience on Elsevier.

The model couples four main porous flow regimes, including fluid flow in the away-from-wellbore region of reservoir matrix, radial flow in the near-wellbore region of reservoir matrix, linear flow in the away-from-wellbore region of fracture, and radial flow in the near-wellbore region of fracture by considering mass transfer between fracture and matrix. The method to introduce the interior well boundary condition into the XFEM is proposed, and therefore the model can be highly adaptable to the complex and asymmetrical physical conditions. Case studies indicate that this kind of multiflow problems can be solved with high accuracy by the use of the XFEM. Prediction of productivity of multifractured horizontal wells has always been a research hotspot. Various methods including the analytical method [ 1 , 2 ], the hybrid numerical-analytical method [ 3 , 4 ], and the numerical method [ 5 , 6 ] have been utilized to tackle that problem, but all of them have shortages. The analytical method is simple and convenient for engineering applications, but it is usually based on the oversimplified model and many questionable assumptions which may cause erroneous results.

Extended Finite Element Method: Theory and Applications

It extends the classical finite element method FEM approach by enriching the solution space for solutions to differential equations with discontinuous functions. The extended finite element method XFEM was developed in by Ted Belytschko and collaborators, [1] to help alleviate shortcomings of the finite element method and has been used to model the propagation of various discontinuities: strong cracks and weak material interfaces. The idea behind XFEM is to retain most advantages of meshfree methods while alleviating their negative sides. The extended finite element method was developed to ease difficulties in solving problems with localized features that are not efficiently resolved by mesh refinement.

Extended finite element methods enable the accurate solution of boundary value problems with discontinuities and singularities freely located within elements of the mesh. The effort in generating suitable meshes in a classical finite element sense is thereby avoided.

Extended finite element method

Youn, D. Hydraulic fracturing is an important technology to increase the amount of production extracted from unconventional hydro-carbon reservoirs. In spite of the recent proliferation of the stimulation technique, the technical understanding of how fractures initiate, propagate, and interact with material heterogeneity is not well established. The need for improved scientific understanding of this methodology has motivated this research, which seeks to develop probabilistic finite element software for modeling fracture propagations in random formations. The finite element development proposed herein will combine the eXtended Finite Element Method XFEM with random field theory to characterize fracture propagation within heterogeneous tight hydro-carbon reservoirs without any need for re-meshing.

Беккер осмотрел свой бок. На рубашке расплывалось красное пятно, хотя кровотечение вроде бы прекратилось. Рана была небольшой, скорее похожей на глубокую царапину. Он заправил рубашку в брюки и оглянулся. Позади уже закрывались двери. Беккер понял, что, если его преследователь находится внутри, он в западне.


Introduces the theory and applications of the extended finite element method (​XFEM) in the linear and nonlinear problems of continua.


2 comments

Faye S.

This gigantic field has left behind the quite dubious air of a method for a long time and today is the engineer's tool to analyse structures.

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