Week 9 Machining with Planer Challenge
OBJECTIVE:-
To perform an Explicit dynamics simulation to find out the equivalent stress, total deformation and also insert a user defined result to calculate temperature of the body. Two case solution will be required for this simulation:
- Cutting velocity 20000 mm/s
- Cutting velocity 15000 mm/s.
PROCEDURE FOLLOWED:-
Create a new explicit dynamics. Open the engineering data and assign material to this explicit simulation. The material to be added is steel 1006.
Import the geometry.
Open in space-claim and check for any irregularities. If all is fine with the model. Close space-claim and open the model in mechanical workbench.
Rename the geometry. 1 of the geometry is renamed as work piece and another as tool.
Assign the material to the work-piece as steel 1006, to cutting tool let it be structural steel. Change the stiffness behavior of the tool to RIGID.
Delete the default contacts as the type is bonded and we don’t need any bonded contacts in our model. Body interaction to be set as frictionless.
After all this setting we have to assign the mesh criteria. Insert a method as tetrahedron.
Insert a face sizing , Select the 4 edges of the work=piece, no of divisions = 10
Mesh the geometry.
Analysis setting has to be done,
End time = 7.54e-4
Max energy error = 0.1
Insert a fixed support to the bottom side of the work-piece.
Insert a velocity to the cutting tool. In our simulation we have to run the model for 2 cases
Case 1 :- 20000 mm/s
Case 2 :- 15000 mm/s
Also in case 2 apart from the velocity we also need to change some parameters in analysis setting,
End time = 1E-3
Maximum energy error = 0.5
List out all the outputs needed in the simulation, We need total deformation, Equivalent stress and temperature of the body.
Case 1:- 20000 mm/s
Total deformation:
Equivalent stress:
Temperature of the body:-
Case 2 :- 15000 mm/s
Total deformation:
Equivalent stress:
Temperature of the body:
CONCLUSION:-
The simulation for both the cases has been carried out and the results are tabulated below:-
|
Case 1 |
Case 2 |
|
|
Total Deformation(mm) |
29.259 |
32.79 |
|
Equivalent stress(MPa) |
676.75 |
673.55 |
|
Temperature(in Celsius) |
376.95 |
364.74 |