Course on “Fundamentals of Tribology in Sheet Metal Forming”

TOPICS:

• Fundamentals of tribology

• Introduction to tribology in sheet metal forming

– Contact conditions, surface topology and friction in deep drawing processes; underlying friction mechanisms in deep drawing processes: adhesion, ploughing, lubrication regimes; classical friction tests.

– Flattening due to normal loading and sliding; surface roughness evolution due to sub-surface (substrate) plastic deformation

– Wear mode diagram; single asperity ploughing model; slip-line field theory

• Introduction to metal plasticity

– Stress-strain behavior (including temperature effect); yield functions; strain hardening postulates; plastic flow rules; large deformations; forming limit diagrams

• Advanced friction models in sheet metal forming and implementation in FEM

– Multi-scale friction model; evolution of friction during metal forming (position dependent);

– Contact algorithms in FEM

– FE implementation of advanced friction model (in full-scale simulations)

• Tribology Lab tour

• Workshop: Simulating cold stamping processes using the advanced friction model

Program, 18-02-2020

8.00 Registration

9.00 Fundamentals of tribology

10.30 Break

11.00 Tribology in sheet metal forming (1)

12.30 Lunch

13.30 Tribology in sheet metal forming (2)

15.00 Break

15.30 Introduction to metal plasticity

Program, 19-02-2020

8.30 Advanced friction models in sheet metal forming and implementation in FEM

9.30 Break

9.45 Advanced friction models in sheet metal forming and implementation in FEM

11.00 Lab tour

12.30 Lunch

13.00 Workshop: Simulating cold stamping process using the advanced friction model