Week 5 Sphere pressing on a plate

Objective: To simulate a sphere pressing on a plate 4mm downwards and retract it using Structural steel for both sphere and plate but the material of the plate is Non Linear.

Setup:

Engineering data:

Structural steel NL

Geometry:

• exported file of sphere pressing on a plate.STEP
• Edit Geometry in spaceclaim: no change in model

Model:

Geometry: renamed parts as Sphere and plate (material: Structural steel NL)

Material: no change in material

Coordinate system: no change

Symmetry: symmetry region, symmetry region 2

Connections:

Contacts:

• Frictional: Sphere to plate
• Coefficient of friction: 0.74 (from Roymech useful tribology table)

Joints:

• Revolute: Ground to lever

Mesh:

• Sizing: 1mm to plate, 1.5mm to sphere

Static structural:

• Analysis setting:

1. Number of steps =08
2. Current step number = 1
3. Step end time = 1 s
4. Auto time stepping = program controlled
5. Solver type = Direct
6. Large deflection: On

• Fixed support

1. Geometry = bottom face of plate
2. Type = fixed support

• Displacement

1. Geometry = top face of sphere
2. Y component = tabular

Solution:

1. Equivalent stress

2. Equivalent elastic strain:

3. Directional deformation of plate:

Tabular data: