Week 5 Sphere pressing on a plate

1. Objective
We have to perform analysis to simulate a sphere pressing on a plate. In order to avoid excess simulation time, we have considered a quarter of the sphere and plate. We have to capture the plastic deformation.

2. Case setup and Execution

• In the environment variable select the appropriate material, this case its Structural steel Non-Linear
• Then browse for geometry file and import in the Geometry section
• Rename the geometry parts as Sphere and Plate
• Change the material of plate to Structural Steel NL
• Add 2 symmetry regions by selecting faces of sphere and plate
• Remove default contact regions
• Add frictional contact pair between sphere and plate with a coefficient of friction 0.74
• Change default mesh size to 1mm
• In analysis settings, change the number of steps to 4
• Add fixed support to the bottom face of the plate
• Provide a displacement to the sphere in the Y direction by giving tabular data
• For results, display directional deformation for all bodies
• Display Equivalent stress and Equivalent elastic strain will be for plate
• Display equivalent elastic strain for sphere

3. Results, Conclusion and Report presentation

Fig

Fig 1 Directional deformation

Fig 2 Equivalent stress for plate

Fig 3 Equivalent strain for plate

Fig 4 Equivalent strain for sphere

As seen from the above figures,

Directional deformation	0.3299mm
Equivalent stress for plate	3312.8 MPa
Equivalent strain for plate	1.6568e-2
Equivalent strain for sphere	9.0537e-6

We can see that as the plate is strained beyond its elastic limits, plastic deformation has occured.

4. Simulation files
Files are attached