Extended Finite Element and Meshfree Methods

Extended Finite Element and Meshfree Methods
Author: Timon Rabczuk,Jeong-Hoon Song,Xiaoying Zhuang,Cosmin Anitescu
Publsiher: Academic Press
Total Pages: 638
Release: 2019-11-13
Genre: Technology & Engineering
ISBN: 9780128141076

Download Extended Finite Element and Meshfree Methods Book in PDF, Epub and Kindle

Extended Finite Element and Meshfree Methods provides an overview of, and investigates, recent developments in extended finite elements with a focus on applications to material failure in statics and dynamics. This class of methods is ideally suited for applications, such as crack propagation, two-phase flow, fluid-structure-interaction, optimization and inverse analysis because they do not require any remeshing. These methods include the original extended finite element method, smoothed extended finite element method (XFEM), phantom node method, extended meshfree methods, numerical manifold method and extended isogeometric analysis. This book also addresses their implementation and provides small MATLAB codes on each sub-topic. Also discussed are the challenges and efficient algorithms for tracking the crack path which plays an important role for complex engineering applications. Explains all the important theory behind XFEM and meshfree methods Provides advice on how to implement XFEM for a range of practical purposes, along with helpful MATLAB codes Draws on the latest research to explore new topics, such as the applications of XFEM to shell formulations, and extended meshfree and extended isogeometric methods Introduces alternative modeling methods to help readers decide what is most appropriate for their work

Extended Finite Element Method

Extended Finite Element Method
Author: Amir R. Khoei
Publsiher: John Wiley & Sons
Total Pages: 584
Release: 2015-02-23
Genre: Science
ISBN: 9781118457689

Download Extended Finite Element Method Book in PDF, Epub and Kindle

Introduces the theory and applications of the extended finite element method (XFEM) in the linear and nonlinear problems of continua, structures and geomechanics Extended Finite Element Method: Theory and Applications introduces the theory and applications of the extended finite element method (XFEM) in the linear and nonlinear problems of continua, structures and geomechanics. The XFEM approach is based on an extension of standard finite element method based on the partition of unity method. Extended Finite Element Method: Theory and Applications begins by introducing the concept of partition of unity, various enrichment functions, and fundamentals of XFEM formulation. It then covers the theory and application of XFEM in large deformations, plasticity and contact problems. The implementation of XFEM in fracture mechanics, including the linear, cohesive, and ductile crack propagation is also covered. The theory and applications of the XFEM in multiphase fluid flow, including the hydraulic fracturing in soil saturated media and crack propagation in thermo-hydro-mechanical porous media, is also discussed in detail. Introduces the theory and applications of the extended finite element method (XFEM) in the linear and nonlinear problems of continua, structures and geomechanics Explores the concept of partition of unity, various enrichment functions, and fundamentals of XFEM formulation. Covers numerous applications of XFEM including fracture mechanics, large deformation, plasticity, multiphase flow, hydraulic fracturing and contact problems Accompanied by a website hosting source code and examples

Meshfree Methods and Extended Finite Element Methods for Arbitrary Discontinuities

Meshfree Methods and Extended Finite Element Methods for Arbitrary Discontinuities
Author: Jingxiao Xu
Publsiher: Unknown
Total Pages: 135
Release: 2005
Genre: Electronic Book
ISBN: OCLC:61323460

Download Meshfree Methods and Extended Finite Element Methods for Arbitrary Discontinuities Book in PDF, Epub and Kindle

Numerical results show the robustness of the method, both in accuracy and convergence.

Extended Finite Element Method

Extended Finite Element Method
Author: Soheil Mohammadi
Publsiher: John Wiley & Sons
Total Pages: 280
Release: 2008-04-30
Genre: Technology & Engineering
ISBN: 9780470697993

Download Extended Finite Element Method Book in PDF, Epub and Kindle

This important textbook provides an introduction to the concepts of the newly developed extended finite element method (XFEM) for fracture analysis of structures, as well as for other related engineering applications. One of the main advantages of the method is that it avoids any need for remeshing or geometric crack modelling in numerical simulation, while generating discontinuous fields along a crack and around its tip. The second major advantage of the method is that by a small increase in number of degrees of freedom, far more accurate solutions can be obtained. The method has recently been extended to nonlinear materials and other disciplines such as modelling contact and interface, simulation of inclusions and holes, moving and changing phase problems, and even to multiscale analyses. The book is self contained, with summaries of both classical and modern computational techniques. The main chapters include a comprehensive range of numerical examples describing various features of XFEM.

Advances in Meshfree and X fem Methods

Advances in Meshfree and X fem Methods
Author: Gui-Rong Liu
Publsiher: World Scientific
Total Pages: 258
Release: 2003
Genre: Mathematics
ISBN: 981238247X

Download Advances in Meshfree and X fem Methods Book in PDF, Epub and Kindle

This book contains 36 articles covering most of the topics in the rapidly developing areas of meshfree methods and extended finite element methods (X-FEM). These topics include domain discretization, boundary discretization, combined domain/boundary discretization, meshfree particle methods, collocation methods, X-FEM, etc. Papers on issues related to implementation and coding of meshfree methods are also presented. The areas of applications of meshfree methods include solving general partial differential equations, the mechanics of solids and structures, smart material/structures, soil-structures, fracture mechanics, fluid dynamics, impact, penetration, micro-fluidics, etc. In addition, techniques for field variable interpolation, such as the moving least squares (MLS) approximation, the point interpolation method (PIM), and radial PIM are reported. Contents: Meshfree Shape Functions for Weak Formulation, Strong Formulation; Meshfree Methods for Smart Materials/Structures; Meshfree Methods for Fracture Analysis; Meshfree Methods for Membrances, Plates & Shells; Meshfree Methods for Soil; Meshfree Methods for CFD; Boundary Meshfree Methods; Coding, Error Estimation, Parallisation; Meshfree Particle Methods; X-FEM. Readership: Graduate and undergraduate students, reserchers, academics, lecturers and engineers in civil engineering, engineering mechanics and mechanical engineering.

An Introduction to Meshfree Methods and Their Programming

An Introduction to Meshfree Methods and Their Programming
Author: G.R. Liu,Y.T. Gu
Publsiher: Springer Science & Business Media
Total Pages: 480
Release: 2005-12-05
Genre: Technology & Engineering
ISBN: 9781402034688

Download An Introduction to Meshfree Methods and Their Programming Book in PDF, Epub and Kindle

The finite difference method (FDM) hasbeen used tosolve differential equation systems for centuries. The FDM works well for problems of simple geometry and was widely used before the invention of the much more efficient, robust finite element method (FEM). FEM is now widely used in handling problems with complex geometry. Currently, we are using and developing even more powerful numerical techniques aiming to obtain more accurate approximate solutions in a more convenient manner for even more complex systems. The meshfree or meshless method is one such phenomenal development in the past decade, and is the subject of this book. There are many MFree methods proposed so far for different applications. Currently, three monographs on MFree methods have been published. Mesh Free Methods, Moving Beyond the Finite Element Method d by GR Liu (2002) provides a systematic discussion on basic theories, fundamentals for MFree methods, especially on MFree weak-form methods. It provides a comprehensive record of well-known MFree methods and the wide coverage of applications of MFree methods to problems of solids mechanics (solids, beams, plates, shells, etc.) as well as fluid mechanics. The Meshless Local Petrov-Galerkin (MLPG) Method d by Atluri and Shen (2002) provides detailed discussions of the meshfree local Petrov-Galerkin (MLPG) method and itsvariations. Formulations and applications of MLPG are well addressed in their book.

Meshfree Methods for Partial Differential Equations

Meshfree Methods for Partial Differential Equations
Author: Michael Griebel,Marc A. Schweitzer
Publsiher: Springer Science & Business Media
Total Pages: 471
Release: 2012-12-06
Genre: Mathematics
ISBN: 9783642561030

Download Meshfree Methods for Partial Differential Equations Book in PDF, Epub and Kindle

Meshfree methods for the solution of partial differential equations gained much attention in recent years, not only in the engineering but also in the mathematics community. One of the reasons for this development is the fact that meshfree discretizations and particle models are often better suited to cope with geometric changes of the domain of interest, e.g. free surfaces and large deformations, than classical discretization techniques such as finite differences, finite elements or finite volumes. Another obvious advantage of meshfree discretizations is their independence of a mesh so that the costs of mesh generation are eliminated. Also, the treatment of time-dependent PDEs from a Lagrangian point of view and the coupling of particle models and continuous models gained enormous interest in recent years from a theoretical as well as from a practial point of view. This volume consists of articles which address the different meshfree methods (SPH, PUM, GFEM, EFGM, RKPM etc.) and their application in applied mathematics, physics and engineering.

Advances in Meshfree and X FEM Methods

Advances in Meshfree and X FEM Methods
Author: G R Liu
Publsiher: World Scientific
Total Pages: 272
Release: 2002-12-16
Genre: Mathematics
ISBN: 9789814486880

Download Advances in Meshfree and X FEM Methods Book in PDF, Epub and Kindle

This book is a collection of the papers from the proceedings of the 1st Asian Workshop on Meshfree Methods held in conjunction with the 2nd International Conference on Structural Stability & Dynamics (ICSSD02) on 16-18 December 2002 in Singapore. It contains 36 articles covering most of the topics in the rapidly developing areas of meshfree methods and extended finite element methods (X-FEM). These topics include domain discretization, boundary discretization, combined domain/boundary discretization, meshfree particle methods, collocation methods, X-FEM, etc. Papers on issues related to implementation and coding of meshfree methods are also presented. The areas of applications of meshfree methods include solving general partial differential equations, the mechanics of solids and structures, smart material/structures, soil-structures, fracture mechanics, fluid dynamics, impact, penetration, micro-fluidics, etc. In addition, techniques for field variable interpolation, such as the moving least squares (MLS) approximation, the point interpolation method (PIM), and radial PIM are reported. Contents:Meshfree FormulationsMeshfree Methods for Smart Materials/StructuresMeshfree Methods for Fracture AnalysisMeshfree Methods for Membranes, Plates & ShellsMeshfree Methods for SoilMeshfree Methods for CFDBoundary Meshfree MethodsCoding, Error Estimation, ParallisationMeshfree Particle MethodsX-FEM Readership: Graduate and undergraduate students, researchers, academics, lecturers and engineers in civil engineering, engineering mechanics and mechanical engineering. Keywords:Meshfree Method;Meshless Method;SPH;X-FEM;Computational Mechanics;Computational Science;Fluid Dynamics;Modified Variational Principle;Smart Materials

Advances in Meshfree Techniques

Advances in Meshfree Techniques
Author: V.M.A. Leitao,C.J.S. Alves,C. Armando Duarte
Publsiher: Springer Science & Business Media
Total Pages: 315
Release: 2007-05-26
Genre: Technology & Engineering
ISBN: 9781402060953

Download Advances in Meshfree Techniques Book in PDF, Epub and Kindle

The book collects extended original contributions presented at the first ECCOMAS Conference on Meshless Methods held in 2005 in Lisbon. The list of contributors is a mix of highly distinguished authors as well as promising young researchers. This means that the reader gets a varied and contemporary view on different mesh reduction methods and its range of applications. The material presented is appropriate for researchers, engineers, physicists, applied mathematicians and graduate students interested in this active research area.

Meshless Methods and Their Numerical Properties

Meshless Methods and Their Numerical Properties
Author: Hua Li,Shantanu S. Mulay
Publsiher: CRC Press
Total Pages: 447
Release: 2013-02-22
Genre: Mathematics
ISBN: 9781466517479

Download Meshless Methods and Their Numerical Properties Book in PDF, Epub and Kindle

Meshless, or meshfree methods, which overcome many of the limitations of the finite element method, have achieved significant progress in numerical computations of a wide range of engineering problems. A comprehensive introduction to meshless methods, Meshless Methods and Their Numerical Properties gives complete mathematical formulations for the most important and classical methods, as well as several methods recently developed by the authors. This book also offers a rigorous mathematical treatment of their numerical properties—including consistency, convergence, stability, and adaptivity—to help you choose the method that is best suited for your needs. Get Guidance for Developing and Testing Meshless Methods Developing a broad framework to study the numerical computational characteristics of meshless methods, the book presents consistency, convergence, stability, and adaptive analyses to offer guidance for developing and testing a particular meshless method. The authors demonstrate the numerical properties by solving several differential equations, which offer a clearer understanding of the concepts. They also explain the difference between the finite element and meshless methods. Explore Engineering Applications of Meshless Methods The book examines how meshless methods can be used to solve complex engineering problems with lower computational cost, higher accuracy, easier construction of higher-order shape functions, and easier handling of large deformation and nonlinear problems. The numerical examples include engineering problems such as the CAD design of MEMS devices, nonlinear fluid-structure analysis of near-bed submarine pipelines, and two-dimensional multiphysics simulation of pH-sensitive hydrogels. Appendices supply useful template functions, flowcharts, and data structures to assist you in implementing meshless methods. Choose the Best Method for a Particular Problem Providing insight into the special features and intricacies of meshless methods, this is a valuable reference for anyone developing new high-performance numerical methods or working on the modelling and simulation of practical engineering problems. It guides you in comparing and verifying meshless methods so that you can more confidently select the best method to solve a particular problem.

Meshfree Methods for Partial Differential Equations II

Meshfree Methods for Partial Differential Equations II
Author: Michael Griebel,Marc Alexander Schweitzer
Publsiher: Springer Science & Business Media
Total Pages: 311
Release: 2006-09-21
Genre: Mathematics
ISBN: 9783540270997

Download Meshfree Methods for Partial Differential Equations II Book in PDF, Epub and Kindle

The numerical treatment of partial differential equations with particle methods and meshfree discretization techniques is a very active research field both in the mathematics and engineering community. Due to their independence of a mesh, particle schemes and meshfree methods can deal with large geometric changes of the domain more easily than classical discretization techniques. Furthermore, meshfree methods offer a promising approach for the coupling of particle models to continuous models. This volume of LNCSE is a collection of the papers from the proceedings of the Second International Workshop on Meshfree Methods held in September 2003 in Bonn. The articles address the different meshfree methods (SPH, PUM, GFEM, EFGM, RKPM, etc.) and their application in applied mathematics, physics and engineering. The volume is intended to foster this new and exciting area of interdisciplinary research and to present recent advances and results in this field.

The Finite Element Method in Engineering

The Finite Element Method in Engineering
Author: Singiresu S. Rao
Publsiher: Butterworth-Heinemann
Total Pages: 782
Release: 2017-10-31
Genre: Technology & Engineering
ISBN: 9780128143643

Download The Finite Element Method in Engineering Book in PDF, Epub and Kindle

The Finite Element Method in Engineering, Sixth Edition, provides a thorough grounding in the mathematical principles behind the Finite Element Analysis technique—an analytical engineering tool originated in the 1960's by the aerospace and nuclear power industries to find usable, approximate solutions to problems with many complex variables. Rao shows how to set up finite element solutions in civil, mechanical and aerospace engineering applications. The new edition features updated real-world examples from MATLAB, Ansys and Abaqus, and a new chapter on additional FEM topics including extended FEM (X-FEM). Professional engineers will benefit from the introduction to the many useful applications of finite element analysis. Includes revised and updated chapters on MATLAB, Ansys and Abaqus Offers a new chapter, Additional Topics in Finite Element Method Includes discussion of practical considerations, errors and pitfalls in FEM singularity elements Features a brief presentation of recent developments in FEM including extended FEM (X-FEM), augmented FEM (A-FEM) and partition of unity FEM (POUFEM) Features improved pedagogy, including the addition of more design-oriented and practical examples and problems Covers real-life applications, sample review questions at the end of most chapters, and updated references

Meshfree Methods for Partial Differential Equations III

Meshfree Methods for Partial Differential Equations III
Author: Michael Griebel,Marc Alexander Schweitzer
Publsiher: Springer Science & Business Media
Total Pages: 304
Release: 2007-07-18
Genre: Mathematics
ISBN: 9783540462224

Download Meshfree Methods for Partial Differential Equations III Book in PDF, Epub and Kindle

Meshfree methods for the numerical solution of partial differential equations are becoming more and more mainstream in many areas of applications. This volume represents the state-of-the-art in meshfree methods. It consists of articles which address the different meshfree techniques, their mathematical properties and their application in applied mathematics, physics and engineering.

Meshfree Methods for Partial Differential Equations IX

Meshfree Methods for Partial Differential Equations IX
Author: Michael Griebel,Marc Alexander Schweitzer
Publsiher: Springer
Total Pages: 206
Release: 2019-06-19
Genre: Mathematics
ISBN: 9783030151195

Download Meshfree Methods for Partial Differential Equations IX Book in PDF, Epub and Kindle

This volume collects selected papers presented at the Ninth International Workshop on Meshfree Methods held in Bonn, Germany in September 2017. They address various aspects of this very active research field and cover topics from applied mathematics, physics and engineering. The numerical treatment of partial differential equations with meshfree discretization techniques has been a very active research area in recent years. While the fundamental theory of meshfree methods has been developed and considerable advances of the various methods have been made, many challenges in the mathematical analysis and practical implementation of meshfree methods remain. This symposium aims to promote collaboration among engineers, mathematicians, and computer scientists and industrial researchers to address the development, mathematical analysis, and application of meshfree and particle methods especially to multiscale phenomena. It continues the 2-year-cycled Workshops on Meshfree Methods for Partial Differential Equations.

Advanced Differential Equations

Advanced Differential Equations
Author: Ali Mason
Publsiher: Scientific e-Resources
Total Pages: 316
Release: 2019-11-07
Genre: Electronic Book
ISBN: 9781839473890

Download Advanced Differential Equations Book in PDF, Epub and Kindle

Advanced differential equations appear in several applications especially as mathematical models in economics, an advanced term may for example reflect the dependency on anticipated capital stock. This book also deals with nonoscillation properties of scalar advanced differential equations. Some new oscillation and nonoscillation criteria are given for linear delay or advanced differential equations with variable coefficients and not necessarily constant delays or advanced arguments. The present book has been written in the light of the latest syllabi of several Universities. The subject matter has been presented in such a way that it is easily accessible to students. The method of presentation is very clear and lucid which can be easily followed by the students. The contents conform to the specified syllabi and are so structured as to enable the student to move easily from the fundamental to the complex. It is our earnest hope that this book will be of great value to all our students.