Isogeometric Analysis: Toward Integration of CAD and FEA by J. Austin Cottrell

Description: "The authors are the originators of isogeometric analysis, are excellent scientists and good educators. It is very original. There is no other book on this topic." --René de Borst, Eindhoven University of Technology Written by leading experts in the field and featuring fully integrated colour throughout, Isogeometric Analysis provides a groundbreaking solution for the integration of CAD and FEA technologies. Tom Hughes and his researchers, Austin Cottrell and Yuri Bazilevs, present their pioneering isogeometric approach, which aims to integrate the two techniques of CAD and FEA using precise NURBS geometry in the FEA application. This technology offers the potential to revolutionise automobile, ship and airplane design and analysis by allowing models to be designed, tested and adjusted in one integrative stage. Providing a systematic approach to the topic, the authors begin with a tutorial introducing the foundations of Isogeometric Analysis, before advancing to a comprehensive coverage of the most recent developments in the technique. The authors offer a clear explanation as to how to add isogeometric capabilities to existing finite element computer programs, demonstrating how to implement and use the technology. Detailed programming examples and datasets are included to impart a thorough knowledge and understanding of the material. * Provides examples of different applications, showing the reader how to implement isogeometric models * Addresses readers on both sides of the CAD/FEA divide * Describes Non-Uniform Rational B-Splines (NURBS) basis functions Preface 1 From CAD and FEA to Isogeometric Analysis: An Historical Perspective 1.1 Introduction 1.2 The evolution of FEA basis functions 1.3 The evolution of CAD representations 1.4 Things you need to get used to in order to understand NURBS-based isogeometric analysis Notes 2 NURBS as a Pre-analysis Tool: Geometric Design and Mesh Generation 2.1 B-splines 2.2 Non-Uniform Rational B-Splines 2.3 Multiple patches 2.4 Generating a NURBS mesh: a tutorial 2.5 Notation Appendix 2.A: Data for the bent pipe Notes 3 NURBS as a Basis for Analysis: Linear Problems 3.1 The isoparametric concept 3.2 Boundary value problems 3.3 Numerical methods 3.4 Boundary conditions 3.5 Multiple patches revisited 3.6 Comparing isogeometric analysis with classical finite element analysis Appendix 3.A: Shape function routine Appendix 3.B: Error estimates Notes 4 Linear Elasticity 4.1 Formulating the equations of elastostatics 4.2 Infinite plate with circular hole under constant in-plane tension 4.3 Thin-walled structures modeled as solids Appendix 4.A: Geometrical data for the hemispherical shell Appendix 4.B: Geometrical data for a cylindrical pipe Appendix 4.C: Element assembly routine Notes 5 Vibrations and Wave Propagation 5.1 Longitudinal vibrations of an elastic rod 5.2 Rotation-free analysis of the transverse vibrations of a Bernoulli-Euler beam 5.3 Transverse vibrations of an elastic membrane 5.4 Rotation-free analysis of the transverse vibrations of a Poisson-Kirchhoff plate 5.5 Vibrations of a clamped thin circular plate using three-dimensional solid elements 5.6 The NASA aluminum testbed cylinder 5.7 Wave propagation Appendix 5.A: Kolmogorov n-widths Notes 6 Time-Dependent Problems 6.1 Elastodynamics 6.2 Semi-discrete methods 6.3 Space-time finite elements 7 Nonlinear Isogeometric Analysis 7.1 The Newton-Raphson method 7.2 Isogeometric analysis of nonlinear differential equations 7.3 Nonlinear time integration: The generalized-alpha method Note 8 Nearly Incompressible Solids 8.1 B formulation for linear elasticity using NURBS 8.2 F formulation for nonlinear elasticity Notes 9 Fluids 9.1 Dispersion analysis 9.2 The variational multiscale (VMS) method 9.3 Advection-diffusion equation 9.4 Turbulence Notes 10 Fluid-Structure Interaction and Fluids on Moving Domains 10.1 The arbitrary Lagrangian-Eulerian (ALE) formulation 10.2 Inflation of a balloon 10.3 Flow in a patient-specific abdominal aorta with aneurysm 10.4 Rotating components Appendix 10.A: A geometrical template for arterial blood flow modeling 11 Higher-order Partial Differential Equations 11.1 The Cahn-Hilliard equation 11.2 Numerical results 11.3 The continuous/discontinuous Galerkin (CDG) method Note 12 Some Additional Geometry 12.1 The polar form of polynomials 12.2 The polar form of B-splines Note 13 State-of-the-Art and Future Directions 13.1 State-of-the-art 13.2 Future directions Appendix A: Connectivity Arrays A.1 The INC Array A.2 The IEN array A.3 The ID array A.3.1 The scalar case A.3.2 The vector case A.4 The LM array Note References Index

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