05/019/2023 #1 Hub Nut
- Emily Adam
These are just the cases for fwd left and fwd right acceleration. Before I finish the last two cases, I figured I should let these ones get roasted in case my FEA stinks
I also generated reports for each of the studies I did, which are in the zip file I’ve attached.
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Fwd left acceleration
Forces
Fx | Fy | Fz |
|---|---|---|
|  |  |
Torques
Mx | My | Mz |
|---|---|---|
|  |  |
Fwd right acceleration
Forces
Fx | Fy | Fz |
|---|---|---|
 *idk why it only shows arrows in the top right of the part | 
|  |
Moments
Mx | My | Mz |
|---|---|---|
 |  |  |
Bwd left acceleration
Bwd right acceleration
Fixtures
My understanding: the hub locates to the rim, then the hub nut secures the assembly together on the other side of the rim. The hole pattern on the hub nut is not used except for with the torque-wrench fixture.
1. Fixed geometry on the hub nut’s threads
2. Roller geometry on the rim mating surface of the hub nut
Mesh Convergence
Material yield strength: 4.6e+08 N/m^2
Fwd left acceleration
Max stress converging at ~1.22e+06N/m^2 < yield strength → PASS
Node Size | Max Stress | Location |
|---|---|---|
Max 3.11861 mm, Min 1.03953 mm | 1.201e+06N/m^2 | Along edge of nut’s ID, near the rim-mating surface  |
Max 2.81681 mm, Min 0.938926 mm | 1.236e+06N/m^2
| Same as above, except at a different spot along the edge 
|
Max 2.76651 mm, Min 0.922159 mm | 1.224e+06N/m^2 | Same as above 
|
Max 2.61561 mm, Min 0.87186 mm | 1.221e+06N/m^2
| Same as above 
|
Max 2.3641 mm, Min 0.788027 mm | 1.226e+06N/m^2 | Same as 3.11mm node  |
Fwd right acceleration
Max stress converging at ~4.6e+06N/m^2 < yield strength → PASS
Node Size | Max Stress | Location |
|---|---|---|
Max 3.11861 mm, Min 1.03953 mm | 4.504e+06N/m^2 | Along edge of nut’s ID, near the rim-mating surface  |
Max 2.81681 mm, Min 0.938926 mm | 4.634e+06N/m^2 | Same as above, except at a different spot along the edge 
|
Max 2.76651 mm, Min 0.922159 mm | 4.590e+06N/m^2 | Same as above  |
Max 2.61561 mm, Min 0.87186 mm | 4.578e+06N/m^2 | Same as above  |
Max 2.46471 mm, Min 0.82156 mm | 4.628e+06N/m^2 | Same as 3.11mm node  |
Max 2.3641 mm, Min 0.788027 mm | 4.599e+06N/m^2 | Same as above 
|
Results
Fwd left acceleration - 2.36 mm node
Fwd right acceleration - 2.36 mm node
