Day 1:
Introduction to Nonlinear Analysis (ANL-1)
Introduces the concepts, types and terminology of nonlinear finite
element analysis.
- Fundamentals of nonlinearity
- Material nonlinearity
- Geometric nonlinearity
- Nonlinear boundary conditions
- Nonlinear analysis concepts
- Nonlinear analysis specification in LUSAS
Nonlinear Solution Procedures and Control (ANL-2)
The inner workings of a LUSAS nonlinear run are described to aid the
user in the specification of LUSAS solution data. Also considered is geometric
nonlinearity looking at large displacement analysis.
- Nonlinear solution strategy
- Incremental loading procedures
- Newton-Raphson iteration methods
- Iterative acceleration
- Constrained solution methods
- Convergence criteria
- Solution termination
- Nonlinear output control
Day 2:
Material Nonlinearity 1 - Elasto-Plasticity (ANL-3)
Elasto-plastic analysis is covered in some detail, comparing the
different material models available in LUSAS.
- Material nonlinearity
- Elasto-plastic behaviour
- Continuum plasticity models
- Elasto-plastic analysis of frames
- Interface plasticity
Material Nonlinearity 2 - Other Materials (ANL-4)
Introducing a wide range of material models, from ductile fracture,
through volumetric crushing to rubber.
- Ductile fracture
- Continuum damage
- Volumetric crushing (foam)
- Hyper-elastic (rubber)
- Visco-elasticity (creep)
- User-defined material models
Day 3:
Nonlinear Boundary Conditions (ANL-5)
Covering both simple lift-off and general contact. The LUSAS slideline
facility is described in detail for use in general contact and impact analyses.
- Joint element methods
- Slideline methods
- Practical considerations