Isogeometric Boundary Element Method

AvGernot Beer,Benjamin Marussig

Häftad, Engelska, 2020

Del 90 i serien Lecture Notes in Applied and Computational Mechanics

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Beskrivning

This book discusses the introduction of isogeometric technology to the boundary element method (BEM) in order to establish an improved link between simulation and computer aided design (CAD) that does not require mesh generation. In the isogeometric BEM, non-uniform rational B-splines replace the Lagrange polynomials used in conventional BEM. This may seem a trivial exercise, but if implemented rigorously, it has profound implications for the programming, resulting in software that is extremely user friendly and efficient. The BEM is ideally suited for linking with CAD, as both rely on the definition of objects by boundary representation. The book shows how the isogeometric philosophy can be implemented and how its benefits can be maximised with a minimum of user effort. Using several examples, ranging from potential problems to elasticity, it demonstrates that the isogeometric approach results in a drastic reduction in the number of unknowns and an increase in the quality of the results. In some cases even exact solutions without refinement are possible. The book also presents a number of practical applications, demonstrating that the development is not only of academic interest. It then elegantly addresses heterogeneous and non-linear problems using isogeometric concepts, and tests them on several examples, including a severely non-linear problem in viscous flow. The book makes a significant contribution towards a seamless integration of CAD and simulation, which eliminates the need for tedious mesh generation and provides high-quality results with minimum user intervention and computing.

Produktinformation

Utgivningsdatum:2020-09-22
Mått:155 x 235 x 24 mm
Vikt:540 g
Format:Häftad
Språk:Engelska
Serie:Lecture Notes in Applied and Computational Mechanics
Antal sidor:335
Förlag:Springer Nature Switzerland AG
ISBN:9783030233419

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Mer om författaren

Gernot Beer is emeritus Professor at Graz University of Technology, Austria. He has been very active in promoting the Boundary Element Method and wrote 3 books on the topic, one published with Springer: The Boundary Element Method with Programming (2008).

Innehållsförteckning

Introduction.- The boundary integral equation.- Basis functions, B-splines.- Description of the geometry.- Getting geometry information from CAD programs.- Numerical treatment of integral equations.- Numerical integration.- Steady state potential problems.- Static linear solid mechanics.- Body force effects.- Treatment of inhomogeneities/inclusions.- Material non-linear behaviour.- Applications in geomechanics.- Viscous flow problems.- Time dependent problems.- Summary and outlook.- Appendix A: Fundamental solutions.

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