Challenge

Week 5 Sphere pressing on a plate

Objective:

To perform the analysis to simulate a sphere pressing on a plate by 4mm downward and to capture the plastic deformation on the plate.

Set up & procedure:

From the Engineering data source we have selected Structural steel and Structural steel NL for analysing the above simulation. The material properties are described as below.
The CAD geometry has been imported to carry out the analysis and we have assigned structural steel to the sphere portion and structural steel NL to the plate.
We have assigned two symmetrical regions to the two portion of the geometry so that the overall computational time for the analysis can be reduced.
In the contact region we have assigned frictional contact between the sphere and the plate with coefficient of friction as 0.74.
For the meshing we have used face sizing for the sphere with element size of 2mm. The total number of nodes are 2524 and elements as 891.
In tha Analysis setting we have used 4 steps to implement the loads. The other changes done are shown in the figure below.
The bottom portion of the plate is fixed and a displacement is applied to the sphere in a increasing step of 2mm in two steps and the the sphere is broughr back to its original position.
In the solution section we have used directional deformation to observe the deformation in the Y direction.

Results:

Directional Deformation:

Directional deformation of the plate:

Animation files:

Discussion & Conclusion:

Thus on implementation of a displacement of 4mm by the sphere we can observe a deformation of 0.33269mm on the plate.
By using symmetry we can save our computational time as well as computational work.

Ship work like this
in your own course.