What are the key considerations for designing truck wheel studs?

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SUMMARY

The discussion focuses on the design considerations for truck wheel studs, specifically addressing the need for a free body diagram to analyze forces acting on the studs. Key parameters include a maximum loaded mass of 4200 kg, an outside tire diameter of 1100 mm, a nominal PCD of 400 mm, and a track width of 2200 mm. The user seeks resources to calculate mean and alternating forces, emphasizing the importance of rim type in load distribution through bolted connections.

PREREQUISITES
  • Understanding of free body diagrams in mechanical engineering
  • Knowledge of load calculations for vehicle dynamics
  • Familiarity with bolt patterns and their implications on wheel design
  • Basic principles of material fatigue and lifespan estimation
NEXT STEPS
  • Research methods for calculating forces on wheel studs using free body diagrams
  • Explore textbooks on vehicle dynamics and load analysis
  • Investigate different rim designs and their load distribution characteristics
  • Learn about material selection for durability in truck wheel applications
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Mechanical engineers, automotive designers, and students involved in vehicle dynamics and wheel design optimization.

rishflab
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I need to design studs for a front truck wheel inlcuding the pattern, position, type of stud etc. I am having trouble developing a free body diagram of the wheel studs and finding all the forces on the wheel studs.

I know the following info:

Max all up mass loaded 4200 kg (~70% max on front wheel)
Outside diameter of tyre (Dw) 1100 mm
Nominal PCD of bolt pattern 400 mm
Track width 2200 mm
Height of CoG loaded 1500mm
Max lateral acceleration µg, or rolling over first (u= ~0.9)
Desired Life 20yrs

Does anyone know any textbooks or websites or something which can help me find the forces (mean and alternating) I will be dealing with?
 
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You also need to decide what type of rim you are using. For some, all the loads go thru the bolted connection, but not for other designs.
 

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