How to measure the force generated by a tyre when it fails?

In summary, the conversation revolves around calculating the force generated when a tire fails at a certain pressure inside an OSHA compliant tire cage. The tire size and inflation rating are provided, along with the maximum supply available. The goal is to determine the force, shockwave, and energy released when the tire fails, with the worst case scenario being a split sidewall with all stored pressure and energy released in one direction. Various methods of calculation and resources, such as analyzing stress distribution and Google searches, are suggested to estimate the force and damage caused by an exploding tire.
  • #1
mel1
2
0
Hello everyone,

I am trying to work out how much force is generated when a tyre fails at a certain pressure. The tyre will be inside an OSHA section 1910.177 compliant tyre cage.

What calculation would be used to solve the following?:

The tyre size is 35 x 11.5-17 with a rated inflation of 255 psi.

Maximum supply available to the tyre is 300 psi.

I need to know what force/shockwave/energy is released if the tyre were to fail inside the cage.

Worst case scenario is the tyre sidewall splits with all stored pressure/energy being released in one direction.

Thanks for your time.
 
Engineering news on Phys.org
  • #2
The tire fails when the strength of one of the materials contained within the tire construction is exceeded. This is characterized by the state of stress within the material at the failure pressure. An analysis of the stress distribution within the tire structure can be carried out to establish the state of stress at a given pressure.
 
  • #3
A couple thoughts:

There is a volume of air at a pressure inside the tire. The energy in that volume of air at that pressure can be calculated. All of that energy is released suddenly when the tire blows. If you are not familiar with the calculations, google energy in compressed air. The expansion will be adiabatic.

If a hole blows in the tire, the escaping air is short lived rocket engine. Google rocket thrust calculator to learn more. One of the good hits is NASA. The pressure drops rapidly, so the easiest way to find the velocity of the tire is by using a numerical solution.

Or you can simply google exploding tires and watch a few videos. You can estimate forces from the damage shown.
 
  • #4
Thank you both for your input.
 

1. What equipment is needed to measure the force generated by a tyre when it fails?

To measure the force generated by a tyre when it fails, you will need a force gauge or load cell, a tire test machine, and a data acquisition system.

2. How do you prepare the tyre for testing?

The tyre should be mounted on a test wheel and inflated to the recommended pressure before testing. It should also be placed on a flat, level surface to ensure accurate measurements.

3. What is the procedure for measuring the force generated by a tyre when it fails?

The tyre should be subjected to a controlled failure, such as puncturing it with a sharp object or increasing the load on it until it bursts. The force gauge or load cell should be attached to the wheel and the data acquisition system should record the force readings during the failure.

4. How do you interpret the results of the force measurement?

The force generated by a tyre when it fails can be measured in pounds or newtons. This measurement can indicate the strength and durability of the tyre and can be used to compare different tyre models or to assess the effects of various driving conditions on tyre failures.

5. Are there any safety precautions to take when measuring the force generated by a tyre when it fails?

Yes, it is important to follow all safety precautions when conducting any type of tyre testing. This includes wearing appropriate protective gear, following proper testing procedures, and ensuring that the testing environment is secure and controlled to prevent any potential hazards.

Hot Threads

Recent Insights

Back
Top