Week 5 Sphere pressing on a plate

Objective:

For this challenge, perform the analysis to simulate a sphere pressing on a plate.

Use Structural steel for both sphere and plate but the material of the plate must be Non Linear.

Press the sphere onto plate 4mm downwards and retract it.

Procedure:

• we need to add structural steel and structural steel non linear material to the library.

• go to geometry and import the geometry
• go to model right click<edit<mechanical apdl will open.
• rename components as sphere and plate

• go to connections <delete default connections
• right click on contact<insert<manual contact<contact=select sphere surface<target=select plate surface<type=frictional<frictional coefficient=0.74

• go to mesh <generate mesh with element bsize=1mm

• go to analysis settings<number of steps=4<solver type=direct<large deflection=on

• right click on static structural<insert displacement<select top surface of the spher<direction y

• right click on model<insert<symmetry region<select two faces <direction z direction

• insert symmetry region<select two faces<direction x direction

• right click on solutiion<insert directional deformation in y direction
• insert equivalent stress in plate<insert equivalent strain<insert equivalent strain in sphere
• right click on solution<solve

Results:

directional deformation:

Equivalent stress in plate:

Equivalent elastic strain:

Equivalent elastic strain in sphere:

Directional deformation in plate:

Result table:

s.no
1	directional deformation	0.32934mm
2	Equivalent stress in plate	3313.8MPa
3	Equivalent elastic strain	0.016575
4	Equivalent elastic strain in sphere	1.2139e^-5

CONCLUSSION:

In this project sphere made by structural steel pressed in to a plate made by structural steel non linear material.sphere pressed in to plate up to plastic limit where it will not regain its original shape.