Week 10 Bullet penetrating a Bucket Challenge

Objective: Simulate a bullet penetrating into a bucket using 3 different nonlinear materials.

Model:

Material Used: Aluminum and Magnesium

Comparison between aluminum and magnesium:

Mg alloys are used less in comparison of Al alloys due to the resons below:

1. Magnesium is highly reactive and less stable than aluminum

2. Magnesium, when compared to aluminum, is softer and more expensive, and has the tendency to bend easily.

3. Magnesium, when compared to aluminum, is lightweight and valuable, whereas forged aluminum is stronger.

4. Magnesium and its alloys are more cost effective in terms of energy requirements than aluminum and its alloys.

5. The die casting cycle of aluminum versus magnesium has more advantages, since the magnesium injected speed should be very fast due to its rapid solidification rate, whereas magnesium die casting’s eject time is shorter than the amount of time required for aluminum. Magnesium die casting needs a shorter dwelling and lubrication time, with faster shot speed, when compared to aluminum.

6. Magnesium needs a protective coating to make it an anti corrosive material.

Mesh sizing:

Final Mesh:

Analysis Settings:

Fixed Velocity

Results:

Case 1

Material: Aluminum 1100

Deformation:

Equivalent Stress:

Equivalent Strain:

Energy:

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Case 2

Material used: Aluminum alloy NL

Total Deformation:

Equivalent Stress:

Equivalent Elastic Strain:

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Case 3:

Material used: Magnesium NL

Total Deformation:

Equivalent Stress

Equivalent Elastic Strain

Results and conclusion:

	Deformation	Stress	Strain
AL 1100	1360	3617	0.0034
Al NL	834	1681	0.23
Mg NL	1390	1630	0.04

AL 1100 Commercially pure aluminum highly resistant to chemical attack and weathering. Low cost, ductile for deep drawing, and easy to weld.

It is Used for high-purity applications such aschemical processing equipment. Also for nameplates, fan blades, flue lining, sheet metal work, spun holloware, and fin stock

Aluminum NL has higher stress value low deformation value because it is less softer tham Magnesium NL.