Solving for Stress on Front Axle: Angular Momentum to Force

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SUMMARY

This discussion focuses on calculating the stress on a front axle when a car, raised at an angle, comes to an immediate halt. The user has utilized linear momentum and angular momentum concepts around the rear axle but seeks clarification on incorporating gravity and converting angular momentum into force. Key factors include the vehicle's deceleration, weight due to gravity, torque related to the moment arm, and the moment of inertia, particularly the parallel axis theorem.

PREREQUISITES
  • Understanding of linear momentum and angular momentum
  • Knowledge of torque and moment arms
  • Familiarity with moment of inertia and the parallel axis theorem
  • Basic principles of physics related to gravity and force calculations
NEXT STEPS
  • Research the relationship between angular momentum and force conversion
  • Study the effects of deceleration on stress calculations in automotive engineering
  • Explore the parallel axis theorem in detail for moment of inertia calculations
  • Investigate torque calculations in relation to vehicle dynamics
USEFUL FOR

Mechanical engineers, automotive engineers, physics students, and anyone involved in vehicle dynamics and stress analysis on automotive components.

codywookman
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I have a problem with finding stress on this front axle. The problem gives the angle at which the car is raised (front wheels off the ground) and the speed its going. It states the car comes to an immediate halt, dropping the front end. It asks to find the force the front end will withstand when it hits the ground.

So far I have used the linear momentum of the masses (point loads along the frame of the car) to create an angular momentum around the rear axle.

How do I account for gravity? How is angular momentum converted into force? Any help or ideas would be great. Thanks,
 
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codywookman said:
How do I account for gravity? How is angular momentum converted into force? Any help or ideas would be great. Thanks,
Gravity and mass give weight. And there is the deceleration of the vehicle to consider in addition to weight.

Torque is related to moment arm and force, with the force normal (perpendicular) to the moment arm.

Think also about moment of inertia - and parallel axis theorem.
http://hyperphysics.phy-astr.gsu.edu/hbase/mi.html
http://hyperphysics.phy-astr.gsu.edu/hbase/parax.html

Is this homework?
 

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