Nonlinear FEA applications at MSC'Italy

1
Non-linear FEA applications atMSC.Italy
First South European Technological Meeting Monte
Carlo 7-9 June 2000
A. Cella - C. Bruzzo MSC.Italy
2
Connecting rod

• Linear elastic behavior
• Contact
• Import from CAD via STL
• Automated 3D hex mesh

3
Connecting rod - easy 3D hex MESH
4
Connecting rod - contact
4 Contact bodies definition
5
Connecting rod - results
Displacements contour
6
3D Interference Fitting

• Automated Hex-mesh
• Linear elastic material behavior
• Contact (def-def)
• Easy to use GUI for defining contact conditions

7
Rubber materials

• Non linear elasticity
• Curve fitting program
• Rubber foam
• Contact (def-def)

8
Profile drawing

• Elastic - plastic behaviour
• Contact (rig-def)

9
Animation
10
Coupled analysis on a piston head

• Coupled thermal-mechanical analysis
• Temperature transient

11
Welding process

• Non linear thermal behavior
• Phases transition modeled

12
Profile rolling

• MSC.Marc Autoforge 3D
• Non linear material behavior
• s (e , d(e)/d(t))
• Contact
• Automated 3 D Hexa remeshing, based on the
  elements distortion
• Temperature is considered constant on the
  rolling station

13

• Pseudo-static simulation, subdivided into two
  phases

• Rear push, in order to establish a good contact
  condition between the rolls and the work piece

• Rolls movement, which drag the work piece by
  friction

14
Initial process
Modified process
15
Sheet forming

• Elastic-plastic material
• Contact
• Large deformation
• Large rotation
• Spring back

16
Sheet forming
17
Thank You for your attention