Week 5 Sphere pressing on a plate
SPHERE PRESSING ON A PLATE
AIM:
TO SIMULATE AND ANALYSE FOR THE DEFORMATION OF THE PLATE WHEN A SPHERE BALL MADE TO IMPACT ON IT, IN THIS SIMULATION WE ARE GOING TO CONSIDER ¼ TH OF THE GEOMETRY AND THEN LATER WE ARE USING SYMMTERIC REGION TO MIRROR THE GEOMETRY AND TO FIND THE RESULTS.
MODEL:
This model consists of a sphere and a plate , everything in this is model in constructed in ¼th of the original geometry.
MATERIALS:
The materials used in this analysis are structural steel and structural steel non linear properties . the plate is comprised of structural steel non- linear properties and the sphere is made of structural steel .
STRUCTURAL STEEL :
STRUCTURAL STEEL ( NL ) :
SYMMETRIC REGION :
This symmetric region is used to define the similar faces of a model or a geometry , in order to reduce the computational time and the cost efficiency , we are using the symmetric region to obtain one part of the geometric analysis results and then we can mirror them accordingly to get the entire geometry result in a very short time . This symmetric region can be applicable only to the similar structure geometry .
CONTACTS:
In this simulation we are using a fricitonal contact with co-efficient of friction of 0.74 .
MESH :
We are introducing a face sizing mesh of size 1 mm to the contact and target faces , where as in the other faces we are using grid dependency test to generate the default mesh size .
ANALYSIS SETTINGS:
The simulation is carried out in 7 steps, with large deflection on, and the type of simulation is said to be direct.
FIXED SUPPORT:
DISPLACEMENT:
The force has been implemented in the analysis by means of displacement in the negative direction first and to retract it in the opposite direction .
Directional deformation :
Equivalent elastic strain :
Equivalent stress ( von-mises) :
Equivalent stress ( von – mises ) plate :
Contact region :
Pressure :
Force convergence:
RESULT :
Thus we come to conclude that the deformation happened in the plate is a plastic deformation .