Maximum Stress on a wheel in motion

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SUMMARY

The discussion focuses on calculating the maximum stress a vehicle wheel experiences when it collides with a solid object at a speed of 180 m/s. The vehicle weighs 2000 kg, and participants emphasize the need for the modulus of elasticity (E) of the wheel material to determine the maximum allowable stress. The fundamental formula provided is stress = force/area, which is essential for calculating the stress on the wheel during impact. Participants seek guidance on the appropriate formulas and methods for accurately determining the maximum force transmitted to the wheel.

PREREQUISITES
  • Understanding of basic physics concepts, particularly Newton's laws of motion.
  • Familiarity with stress and strain calculations in materials science.
  • Knowledge of the modulus of elasticity (E) for different materials.
  • Basic proficiency in applying formulas related to force and area.
NEXT STEPS
  • Research the calculation of impact force using the formula F = m * a, where 'm' is mass and 'a' is acceleration.
  • Learn about the modulus of elasticity for various materials to assess yield strength.
  • Explore advanced topics in material science related to fatigue and stress testing of wheel materials.
  • Investigate simulation tools for impact analysis, such as ANSYS or SolidWorks.
USEFUL FOR

Mechanical engineers, automotive designers, and materials scientists involved in vehicle design and safety assessments will benefit from this discussion.

Davieslad
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Homework Statement


I have a vehicle traveling at 180 ms^-1, weighing 2000kg.
I need to calculate the maximum stress that the wheel is likely to sustain if it hits a solid, immovable object at the above speed, so that i can successfully design a wheel which won't go beyond its yield strength.

Does anyone know of any formula to calculate the maximum force transmitted to the wheel


Homework Equations



stress = force/area

The Attempt at a Solution



Im not really sure where to start with the maximum stress.

Any help much appreciated

Cheers
Ed
 
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I would think you'd need to at least know the modulus E of the material to find the max allowable stress?
 

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