Week 10 Bullet penetrating a Bucket Challenge
Bullet Penetrating Through Bucket:
Aim:
To simulate the bullet penetrating into a bucket using three different non-linear materials for the bucket.
Objective:
For this challenge, you will have to simulate a bullet penetrating into a bucket. You will need to use 3 different non linear materials for the bucket and analyse their behaviour for the same velocity of bullet. Apply the conditions for bullet as mentioned in the video itself. Upload animation files to show the behaviour in the three cases.
Procedure:
- Firstly open ANSYS workbench software.
- Select Explicit dynamics from the analysis system.
- And then import the geometry form the system files.
- And assign aluminium alloy NL material to the bucket.
- And assign Tantalum material for the bullet.
- And change the stiffness behaviour of the bullet to rigid.
- Then we proceed for meshing by selecting edge as edge sizing.
- Assign an edge sizing of 6mm for meshing.
- The meshed image is as follows.
- And after that in analysis settings assign no of steps as 1 and end time as 0.01.
- And assign fixed support to the bucket at the bottom end.
- And will assign 139m velocity to the bullet to travel through bucket in the negative -x direction as follows.
- And finally we need to get the solution for
- Total deformation
- Equivalent stress
Result:
CASE 1(Aluminium alloy):
Total Deformation:
Maximum- 1394.9 mm
Minimum- 4.1863e-22 mm
Equivalent stress:
Maximum- 532.41 mpa
Minimum- 6.1351 mpa
CASE 2(Copper Alloy NL):
Total Deformation:
Maximum- 1390.1 mm
Minimum- 4.1863e-22 mm
Equivalent stress:
Maximum- 844.59 mpa
Minimum- 10.785 mpa
CASE 3(Magnesium Alloy NL):
Total Deformation:
Maximum- 1395.4 mm
Minimum- 8.229e-22 mm
Equivalent stress:
Maximum- 943.71 mpa
Minimum- 7.9928 mpa
Tabular data:
Total Deformation(mm) Equivalent stress(mpa)
Max Min Max Min
Aluminium alloy 1394.9 4.1863e-22 532.41 6.1351
Copper alloy 1390.1 4.1863e-22 844.59 10.785
Magnesium alloy 1395.4 8.229e-22 943.91 7.9928
Conclusion:
From the above tabular data we got to know that total deformation is almost same for all the three cases,whereas equivalent stress is more for magnesium alloy and less for aluminum alloy.