Solution Methods for Nonlinear
Finite Element Analysis (NFEA)
Kjell Magne Mathisen
Department of Structural Engineering
Norwegian University of Science and Technology
Lecture 11: Geilo Winter School - January, 2012
Outline
• Linear versus nonlinear reponse
• Fundamental and secondary path
• Critical points
• Why Nonlinear Finite Element Analysis (NFEA) ?
• Sources of nonlinearities
• Solving nonlinear algebraic equations by Newton’s method
• Line search procedures and convergence criteria
• Arc-length methods
• Implicit dynamics

 

 

 

Non Linear Finite Element Methods.pdf
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