The webinar by Richard Szöke-Schuller and Łukasz Skotny focuses on the use of nonlinear materials and plasticity in finite element analysis (FEA), discussing the limitations of linear materials and how to set up simulations in SimScale. Key topics include understanding the behavior of nonlinear materials, work hardening, and practical case studies involving I-beams under pressure load. The session aims to provide insights for structural design and optimization through hands-on training.

1. By Richard Szöke-Schuller and Łukasz Skotny
FEA webinar
Nonlinear Material: Plasticity with
Enterfea

2. We do and teach FEA!
● Structural design and product optimization
● FEA consulting
● Live and online training
FEA is FUN :)
About Enterfea
What we do

3. ● Issues with linear material
● How nonlinear material works
● What you should know
● How to set this up in SimScale
Nonlinear Material: Plasticity
What we will cover today

4. ● Issues with linear material
● How nonlinear material works
● What you should know
● How to set this up in SimScale
Nonlinear Material: Plasticity
What we will cover today

5. ● Where stress higher than yield comes from?
● Should stress higher than yield be allowed?
● If so, how high stress is still OK?
● How big zone of yielding is allowed?
● How to convince someone to my results?
Issues with linear material

6. Issues with linear material
● Where stress higher than yield comes from?
● Should stress higher than yield be allowed?
● If so, how high stress is still OK?
● How big zone of yielding is allowed?
● How to convince someone to my results?

7. Issues with linear material
● Where stress higher than yield comes from?
● Should stress higher than yield be allowed?
● If so, how high stress is still OK?
● How big zone of yielding is allowed?
● How to convince someone to my results?

8. Issues with linear material
● Where stress higher than yield comes from?
● Should stress higher than yield be allowed?
● If so, how high stress is still OK?
● How big zone of yielding is allowed?
● How to convince someone to my results?

9. Issues with linear material
● Where stress higher than yield comes from?
● Should stress higher than yield be allowed?
● If so, how high stress is still OK?
● How big zone of yielding is allowed?
● How to convince someone to my results?

10. Issues with linear material
● Where stress higher than yield comes from?
● Should stress higher than yield be allowed?
● If so, how high stress is still OK?
● How big zone of yielding is allowed?
● How to convince someone to my results?

11. Issues with linear material
● Where stress higher than yield comes from?
● Should stress higher than yield be allowed?
● If so, how high stress is still OK?
● How big zone of yielding is allowed?
● How to convince someone to my results?

12. ● Issues with linear material
● How nonlinear material works
● What you should know
● How to set this up in SimScale
Nonlinear Material: Plasticity
What we will cover today

13. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

14. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

15. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

16. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

17. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

18. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

19. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

20. How plasticity works
● Bi-Linear Material model
● The Rock!
● Something a bit more serious

21. ● Issues with linear material
● How nonlinear material works
● What you should know
● How to set this up in SimScale
Nonlinear Material: Plasticity
What we will cover today

22. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!

23. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!

24. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!

25. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!

26. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!

27. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!

28. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!

29. What you should know
● Work Hardening
● Plastic strain
● Plastic strain is not all!
● Going further!
Free FEA course
www.enterfea.com/simscale

30. ● Issues with linear material
● How nonlinear material works
● What you should know
● How to set this up in SimScale
Nonlinear Material: Plasticity
What we will cover today

31. Example case:
I-beam linear pressure load
● Standard ASTM A6 W-Section I-Beam
● Bi-Linear Plastic Material Model
○ Young’s Modulus 205 GPa
○ Poisson ratio 0.28
○ Yield stress 250 MPa
○ Tangent modulus 1.45 GPa
● Pressure loading and unloading
Support
Pmax
= 3MPa

32. Example case:
I-beam linear pressure load
● Standard ASTM A6 W-Section I-Beam
● Bi-Linear Plastic Material Model
○ Young’s Modulus 205 GPa
○ Poisson ratio 0.28
○ Yield stress 250 MPa
○ Tangent modulus 1.45 GPa
● Pressure loading and unloading
Displacement at max load
● Top: Linear 3.35 [mm] !
● Bottom: Plastic 102 [mm]

33. Example case:
I-beam linear pressure load
● Standard ASTM A6 W-Section I-Beam
● Bi-Linear Plastic Material Model
○ Young’s Modulus 205 GPa
○ Poisson ratio 0.28
○ Yield stress 250 MPa
○ Tangent modulus 1.45 GPa
● Pressure loading and unloading
Displacement at max load
● Top: Linear 3.35 [mm] !
● Bottom: Plastic 102 [mm]

34. Nonlinear Material: Plasticity
FEA webinar
Thank you!