(ANSYS_P9) Sphere pressing on a plate

 OBJECTIVE: To perform an analysis to simulate the non-linear plastic deformation of a plate pressed by a sphere.

The image above is the geometry.This geometry has been divided on two sides to reduce computational time of the simulation.Symmetry is going to be applied to this simulation.

MATERIAL AND THEIR PROPERTIES

Stainless Steel Non-Linear-(Plate)

Density: 7850 kg/m^3

Youngs Modulus: 200000Mpa

Poisson Ratio: 0.3

Tensile Yield Strength: 250 Mpa

MESHING

Meshing is done by setting a method using tetrahedron elements on the sphere and hexa-elements on the plate. 

PROCEDURE

CONTACT

• The contacts between the sphere and the plate are specified with frictional type connection. 
• Sphere (contact) ,plate (target) 
• Friction value of 0.75
• Augumental Langrange

ANALYSIS SETTING

4 STEPS ARE USED,

• Auto Time Stepping: Program controlled
• Solver Type : Direct
• Large deflection: ON

BOUNDARY CONNECTIONS

Fixed support is specified to hold the plate in place

Displacement of the sphere in the y direction is specified and can be seen below.

Symmetry regions are set on two set of faces

T

• The output request requested is the equivalent plastic strain and directional deformation

RESULTS

DIRECTIONAL DEFORMATION

It can be seen below the deformation in the Y-axis. The plate is deformed by the sphere.

EQUIVALENT PLASTIC STRAIN

The plate after being pressed, developed a maximum plastic strain of of 1.7mm/mm and did not return back to its original state

CONCLUSION

This simulation was successful as plastic deformation of the non-linear structural steel material wass demonstrated.