Training
NAFEMS currently offers an e-learning course related to composites. The e-learning course runs over a four week period with a single two hour session per week. The following topics are covered:
Session 1
- Finite Element Analysis Overview
- FEA Basic Principals
- Introduction to composite systems
- Strength and Stiffness of plies
- Comparison with published data or test results
- 2D shell stress strain relationship - Classical Laminate Theory
- Ply angle effect
- Simulation of single ply using FEA
- Sandwich structures and failure modes
- Workshops
Session 2
- Multi ply layups – evaluation of stiffness
- A B D matrix terms and their importance in design and analysis
- Interlaminar shear stresses
- FEA model simulations of varying layups
- Symmetric and balanced layups
- Special types of Layup
- Failure criteria
- Handling large amounts of output data
- Strength assessment
- Workshops
Session 3
- Practical composite modeling
- Inner or outer mold line considerations
- Ply drop off, draping effects
- Edge effects and stress raisers such as holes
- Plane stress modeling
- 3D element background and application
- Workshops
Session 4
- More 3d situations, delamination effects
- Comparison of 2D shell and solid element solutions
- Advanced failure methods
- Progressive ply failure methods
- Virtual Crack Closure methods in delamination
- Workshops
Further details can be found at http://www.nafems.org/e-learning/.