Nonlinear Finite Element Methods (ASEN 6107) - Spring 2014
Department of Aerospace Engineering Sciences
University of Colorado at Boulder




This is the public web site for the graduate course ASEN 6107: Nonlinear Finite Element Methods (NFEM). This doctoral and master-elective level course is part of the Aerospace Systems Focus Area of the graduate curriculum in the Department of Aerospace Engineering Sciences of the University of Colorado at Boulder. Normally offered every two years during the Spring semester (sometimes with 3 year gaps because of sabbaticals), both on-campus and remotely through CAETE. First taught in 1988. This website dates from 1999 and is continuously being revised. Related courses may be accessed at
AFEM: Advanced Finite Element Methods (ASEN 6347) . Master & doctoral level
AVVM: Advanced Variational Methods in Mechanics . Master and doctoral level (in preparation)
FSI: Fluid Structure Interaction (ASEN 5509) . Advanced doctoral level
IFEM: Introduction to Finite Element Methods (ASEN 5007) . Master & senior-elective level
MFEMD: Matrix Finite Element Methods in Dynamics . Master & senior-elective level (in preparation)
MFEMS: Matrix Finite Element Methods in Statics . Master & senior-elective level (in preparation)
JSTR: Structures (ASEN 3112) . Junior undergraduate level

General Course Information. Syllabus, coursework, schedule ...
Web site under complete revision: please be patient!
Note: Please do not download material until the link is marked with an asterisk (*)

Part I: Fundamentals of Nonlinear Structural Analysis
Chapter 1 Index. Overview. Only briefly covered
Chapter 2 Index. A Tour of Nonlinear Analysis.
Chapter 3 Index. Residual Force Equations.
Chapter 4 Index. One-Parameter Residual Equations.
Chapter 5 Index. Critical Points and Related Properties.
Chapter 6 Index. Conservative Systems.
Part II: Total Lagrangian, Geometrically Nonlinear Finite Elements
Chapter 7 Index. Review of Continuum Mechanics: Kinematics
Chapter 8 Index. Review of Continuum Mechanics: Field Equations.
Chapter 9 Index. TL Bar Elements: Formulation & Implementation.
Chapter 10 Index. TL Bar Elements: Truss Analysis.
Chapter 11 Index. The TL Plane Beam Element: Formulation.
Chapter 12 Index. The TL Plane Beam Element: Implementation.
Part III: Corotational, Geometrically Nonlinear Finite Elements
Chapter 13 Index. CR Formulation Overview I.
Chapter 14 Index. CR Formulation Overview II.
Chapter 15 Index. The CR Formulation: Space Bar.
Chapter 16 Index. The CR Formulation: BE Plane Beam.
Chapter 17 Index. Placeholder.
Chapter 18 Index. Placeholder.
Chapter 19 Index. Placeholder.
Part IV: Solution Methods
Chapter 20 Index. Overview of Solution Methods.
Chapter 21 Index. Purely Incremental Methods: Load Control.
Chapter 22 Index. Purely Incremental Methods: General Control.
Chapter 23 Index. Purely Incremental Methods: Implementation. To be finished.
Chapter 24 Index. Purely Incremental Methods: Benchmark Examples. Under construction.
Chapter 25 Index. Conventional Newton Methods. Under renovation.
Chapter 26 Index. Newton Methods: General Control and Variants. To be rewritten.
Chapter 27 Index. Corrective Methods: Implementation. Under construction.
Part V: Structural Stability
Chapter 28 Index. Structural Stability: Basic Concepts.
Chapter 29 Index. Linearized Prebuckling: Formulation.
Chapter 30 Index. Linearized Prebuckling: Implementation.
Chapter 31 Index. Linearized Prebuckling: Examples and Limitations.
Chapter 32 Index. Qualitative Analysis of Critical Points.
Chapter 33 Index. Nonlinear Bifurcation Analysis.
Chapter 34 Index. Imperfections.
Chapter 35 Index. Nonconservative Loading: Overview.
Chapter 36 Index. Aero- and Hydrodynamic Loading.
Chapter 37 Index. Dynamic Stability: Formulation.
Chapter 38 Index. Dynamic Stability: Examples.
Appendices
Appendix A Index. The Mathematics of Finite Rotations.
Appendix B Index. Matrices for EICR Formulation.
Appendix C Index. Choice of Best CR Fit Frame.
Appendix D Index. CR Nomenclature.
Appendix H Index. The C1 TL Beam.
Appendix S Index. Accelerators and Line Search.
Appendix T Index. Detecting and Traversing Critical Points.
Appendix R Index. References.

Old Chapters No Longer Covered
Old Chapter 10 Index. Not to be covered Spring 2014.
Old Chapter 11 Index. Not to be covered Spring 2014.

Exam Material
Exam Material Index. Midterm 2 posted Fr April 11 noon, due Th April 17.
Final Exam posted Wed April 30 by 6pm.


Last update: March 14, 2015.

This page constructed by Carlos Felippa: carlos.felippa@colorado.edu