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Katherine Nguyen

Katherine Nguyen

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nameHub_Loading_Case_5.zip
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nameHub_Loading_Case_3.zip
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nameHub_Loading_Case_2.zip

The Hub

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titlePart Details

Model Version: 89.02

Material: 7075 T6AISI 4340 Steel

Yield Strength: 54.03e600e+08

Validation: June 15th23rd, 2023

By: Katherine Nguyen

Table of Contents
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Loading

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titleGeneral Special Loading Information

  • Took the resultant of the Y and Z forces

  • Converted Mx into a force on the Y-Z plane

  • Combined the full Mx force and the full Ryz into a single vector (for each of the three pin holes)

    • The hub will only be in contact with two pins at a time and determined which two pins would be in contact by which of the three forces would be resisted by the least material in each case

    • To view calculations for vectors: see Katherine’s notes

Loading Case #1:

Rim to Hub

0

2096.57

0

-6.3316414

0

-50.0870573

Loading Case #2:

Rim to Hub

-1080.4

2160.8

1080.4

-308.173296

22.547948

-353.269192

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Loading Case #3:

Rim to Hub

759.92

1519.85

759.92

-216.759611

20.4494472

175.8604475

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Loading Case #4:

Rim to Hub

-1381.27

2762.55

-1381.27

377.307683

-37.1699757

-451.6479035

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Loading Case #5:

Rim to Hub

971.55

1943.1

-971.55

265.388598

-20.2762485

224.836101

Fixtures
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Mesh Refinement

Mesh Convergence & Results

Case #2:

Node Size

Max Stress (Pa)

Location

 5 mm

4.096e+07

 

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 4 mm

4.307e+07

 

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 3 mm

4.147e+07

 

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 2 mm

4.230e+07

 

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 1 mm

4.412e+07

 

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Case #3:

Node Size

Max Stress (Pa)

Location

5 mm

 2.125e+07

 

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4 mm

2.235e+07

 

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3 mm

2.153e+07

 

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2 mm

2.194e+07

 

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1 mm

2.297e+07

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Case #4: Forwards Right

Node Size

Max Stress (Pa)

Location

5 mm

4 mm

3 mm

2 mm

1 mm

7.268e+07

 

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Case #5: Forwards Left

Node Size

Max Stress (Pa)

Location

1 mm

2.637e+07

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Recommendations

Fixtures

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Mesh Refinement

Element size 0.95 mm; min 0.855 mm

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Results

All mesh are at 2mm node size for the following results.

Case #2: Accel + Right Turn

Max: 2.017e+08

Safety Factor: 2.330

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Case #3: Accel + Left Turn

Max: 7.694e+07

Safety Factor: 1.661

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Case #4: Brake + Right Turn

Max: 1.306e+08

Safety Factor: 3.599

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Case #5: Brake + Left Turn

Max: 9.647e+07

Safety Factor: 1.324

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Recommendations

The hub is passing in all cases, with a safety factor of above 1.324. To improve the simulation, add threads onto the corresponding threaded part of the hub, especially for the positive X forces?