Explicit Dynamics Analysis for the Bullet penetrating into the Bucket

Aim:

For this challenge, you will have to simulate a bullet penetrating into a bucket.

We will need to use 3 different non-linear materials for the bucket and analyze is their behavior for the same velocity of the bullet.

Apply the conditions for bullet as mentioned in the video. Attach an animation to show the behavior in the three cases.

Geometry:

Then we have to import into ansys, import the model, and open it in space claim so that ansys will read it and checked for any errors.

Material:

Tantalum material used for the bullet for the total case setup:

Aluminum alloy NL used for bucket:

Magnesium alloy NL used for bucket:

Structural Steel NL used for bucket:

Meshing:

At certain locations, the mesh should be refined so we have used the element size as shown below.

The Bullet and bucket which comes in contact has meshed with an element size of 6mm.

The meshed model image and mesh metric graph can be seen below:

The mesh metric is utilized to identify the elements according to their quality using skewness. The quality of the mesh is acceptable as most of the elements lie within a high-quality range.

Body interaction:

The assembly is modeled in such a way that there will be a frictionless body interaction between the bucket and the bullet.

Frictionless Body interaction:

Frictionless body interaction between the bucket and the bullet.

Analytical settings:

The analysis settings were used as per the requirement in the simulation.

Explicit Analysis:

Both fixed and displacement velocity support applied to the specimen.

Result for the Case-1 with Aluminum alloy NL used for bucket:

Total deformation on the model:

The specimen reaches a maximum deformation of 1390mm as shown below.

Equivalent stress on the model:

The specimen has reached the Equivalent stress of 513.8 Mpa as shown below.

The temperature on the model:

The specimen has reached the Maximum temperature of 1036.4 as shown below.

Animation for the Temperature on the model:

The animation on the specimen for the Maximum temperature is shown above.

Result for the Case-2 with Magnesium alloy NL used for bucket:

Total deformation on the model:

The specimen reaches a maximum deformation of 1390mm as shown below.

Equivalent stress on the model:

The specimen has reached the Equivalent stress of 904.5 Mpa as shown below.

The temperature on the model:

The specimen has reached the Maximum temperature of 2233.4 as shown below.

Animation for the Temperature on the model:

The animation on the specimen for the Maximum temperature is shown above.

Result for the Case-3 with Structural Steel NL used for bucket:

Total deformation on the model:

The specimen reaches a maximum deformation of 1390mm as shown below.

Equivalent stress on the model:

The specimen has reached the Equivalent stress of 1028.3 Mpa as shown below.

The temperature on the model:

The specimen has reached the Maximum temperature of 1700.8 as shown below.

Animation for the Temperature on the model:

The animation on the specimen for the Maximum temperature is shown above.

Conclusion:

S.No	Total deformation(mm)	Equivalent stress(Mpa)	Temperature Generated by the body(Deg Celsius)
Case-1	1390	513.8	1036.4
Case-2	1390	904.5	2233.4
Case-3	1390	1028.3	1700.8

From the above Table comparison,

It is seen that the Total-deformation is constant in the three cases

Equivalent stress is higher in the case-3 when compared with the case-1 and case-2.

The temperature is higher in the case-2 when compared with the case-1 and case-3.