Ultimate tensile stress of rubber?

In summary, the ultimate tensile stress of rubber is the amount of stress needed to break it. This is different from ultimate tensile strength, which is usually defined for a specific component and has units of force. The complication for plastic materials is that the cross section area changes, resulting in a changing stress at constant tension.
  • #1
GaussModulus
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Homework Statement



How would you define the ultimate tensile stress of rubber?

Homework Equations



If I had a force/extension graph of rubber, what point in the graph would show me the value of the ultimate tensile stress??

The Attempt at a Solution


Is it the same thing as ultimate tensile strength??


Help much appreciated
Thanks

 
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  • #2
Ultimate tensile stress is the stress (force/area = pressure) that it breaks at.
The complication for plastic materials is that the cross section area changes so at constant tension the stress is changing.
Ultimate tensile strength is normally defined for a specific component with a given area so it has units of force rather than pressure.
 

Related to Ultimate tensile stress of rubber?

1. What is ultimate tensile stress of rubber?

The ultimate tensile stress of rubber is the maximum amount of stress that a rubber material can withstand before breaking or undergoing permanent deformation. It is a measure of the strength and durability of the material.

2. How is ultimate tensile stress of rubber determined?

The ultimate tensile stress of rubber is determined through a tensile strength test, where a sample of the rubber material is stretched until it breaks. The force required to break the sample is then divided by its cross-sectional area to calculate the ultimate tensile stress.

3. What factors can affect the ultimate tensile stress of rubber?

The ultimate tensile stress of rubber can be affected by various factors such as the type and composition of the rubber material, the temperature and humidity of the testing environment, and the speed and direction of the applied force.

4. How does the ultimate tensile stress of rubber compare to other materials?

The ultimate tensile stress of rubber is typically lower than that of metals and other rigid materials, as rubber is known for its elasticity and ability to stretch. However, rubber can withstand higher levels of strain before breaking compared to other materials.

5. Why is the ultimate tensile stress of rubber important?

The ultimate tensile stress of rubber is important as it helps determine the suitability of the material for various applications. It is also a crucial factor in the design and engineering of products that use rubber, as it ensures that the material can withstand the necessary levels of stress and strain without failing.

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