Bullet penetrating a Bucket
AIM:
- To perform explicit analysis of Bullet penetrating a Bucket and evaluate the stress and deformation results.
OBJECTIVES OF THE PROJECT:
- To assign Aluminium alloy NL for Bucket and Tantalum for the bullet.
- To define Mesh method and Edge sizing.
- To define Velocity and fixed support.
- To evaluate the stress, deformation and strain in the work piece.
PROCEDURE:
- CASE 1:
- OPEN WORKBENCH21 > NEW PROJECT > EXPLICIT DYNAMICS.
- This will start a new explicit dynamics project.
- Rename the project as Case 1.
- Go to ENGINEERING DATA > EXPLICIT MATERIALS > ALUMINIUM ALLOY NL > ADD > TANTALUM > ADD.
- Then double click on Geometry. This will open the Spaceclaim.
- In Space claim check the model for any dents or irregularities.
- The geometry looks good, exit the Spaceclaim.
- Then double click on Model. This will open Mechanical module.
- Now, rename the geometry as bullet and bucket.
- Then assign Aluminium alloy NL to the Bucket and Tantalum to the bullet.
- Define GEOMETRY > BULLET > STIFNESS BEHAVIOUR > RIGID.
- Go to Contacts and DELETE ALL CONTACTS.
- MESH > INSERT > METHOD > GEOMETRY = BUCKET AND BULLET > METHOD = TETRAHEDRON.
- Now, MESH > GENERATE MESH.
- The mesh will be generated on the model.
- Then go to STATIC STRUCTURAL > ANALYIS SETTINGS > NO OF STEPS = 1 > END TIME = 1E-2 > MAXIMUM ENERGY ERROR = 5.
- Go to EXPLICIT DYNAMICS > INSERT > VELOCITY > GEOMETRY = PLANER BODY > X COMPONENT = -139000MM/S.
- Go to EXPLICIT DYNAMICS > INSERT > FIXED SUPPORT > GEOMETRY = BUCKET BOTTOM FACE.
- Then, go to SOLUTION > INSERT > STRESS > STRAIN > DEFORMATION.
- This will set the output results.
- Then SOLUTION > SOLVE.
- CASE 2:
- Create duplicate project of Case 1 and rename it as Case 2.
- Go to ENGINEERING MATERIALS > GENERAL NONLINEAR MATERIALS > COPPER ALLOY NL > ADD.
- Then open MECHANICAL MODULE.
- Go to GEOMETRY > BUCKET and assign copper alloy NL material.
- Go to SOLUTION > SOLVE.
- CASE 3:
- Create duplicate project of Case 1 and rename it as Case 3.
- Go to ENGINEERING MATERIALS > GENERAL NONLINEAR MATERIALS > STAINLESS STEEL NL > ADD.
- Then open MECHANICAL MODULE.
- Go to GEOMETRY > BUCKET and assign stainless steel NL material.
- Go to SOLUTION > SOLVE.
RESULTS:
- CASE 1 (Aluminium alloy NL):
- CASE 2:
- CASE 3:
COMPARISON TABLE:
| Stress (MPa) | Strain | Deformation (mm) | |
| Aluminium alloy NL | 437.89 | 8.1579e-3 | 695 |
| Copper alloy NL | 1145.9 | 1.6841e-2 | 694.99 |
| Stainless steel NL | 2873.8 | 1.489e-2 | 695 |
LEARNING OUTCOMES:
- To setup explicit dynamics analysis for machining with planer.
- To assign material from the material library.
- To define mesh method and edge sizing.
- To define velocity and fixed support.
- To define output results.
CONCLUSION:
- By performing this project we conclude that the analysis of bullet penetrating the bucket is performed and the stress, strain and deformation results are obtained.
MODEL LINK:
https://drive.google.com/file/d/12M6MxqVZ-O3OrlIECuUNTpAsnHc5eZ9O/view?usp=sharing