This is a
stress analysis of the plastic nose cone using the finite element method.
The
weight of the submarine in water is about 1050 lbs. The weight in this
analysis was 1100 lbs.
The material used in this analysis has similar
material properties to the actual plastic used
to make the nose cone. Looking
at the results it seems that this type of material is safe
to use as a nose
cone for our submarine.
| No. |
Part Name |
Material |
Mass |
Volume |
| 1 |
Part1 |
[SW]PP Copolymer |
2.58473 lb |
80.3876 in^3 |
3. Load & Restraint
Information
Restraint
| Restraint-1 <nose cone> |
on 1 Face(s) fixed. |
|
| Description: |
|
| Restraint-2 <nose cone> |
on 1 Face(s)Hinge |
|
| Description: |
|
Load
| Pressure-3 <nose cone> |
on 1 Face(s) with Pressure 39.6 psi
along direction normal to selected face |
Sequential Loading |
| Description: |
|
| Pressure-4 <nose cone> |
on 1 Face(s) with Pressure 14.7 psi
along direction normal to selected face |
Sequential Loading |
| Description: |
|
4. Study Property
Mesh Information
| Mesh Type: |
Solid mesh |
| Mesher Used: |
Standard |
| Automatic Transition: |
Off |
| Smooth Surface: |
On |
| Jacobian Check: |
4 Points |
| Element Size: |
0.4047 in |
| Tolerance: |
0.020235 in |
| Quality: |
High |
| Number of elements: |
8609 |
| Number of nodes: |
12924 |
Solver Information
| Quality: |
High |
| Solver Type: |
FFEPlus |
| Option: |
Include Thermal Effects |
| Thermal Option: |
Input Temperature |
| Thermal Option: |
Reference Temperature at zero strain: 298
Kelvin |
5. Contact
Contact state: Touching faces - Bonded
| Name |
Type |
Min |
Location |
Max |
Location |
| Plot1 |
VON: von Mises stress |
| 358.976 N/m^2 |
| Node: 12775 |
|
| (0 in, |
| -0.32476 in, |
| 0.1875 in) |
|
|
| (4.77692 in, |
| 0.32476 in, |
| -0.1875 in) |
|