Viscoelasticity of Steel: Is it Right?

Viscoelasticity is a property of a material that exhibits both viscous and elastic properties. When under load, within the elastic limit, steel offers resistance to deformation (viscous) and regains its shape after the load is removed. So, is it correct to say that steel is viscoelastic within the elastic limit?In summary, viscoelasticity is a property that describes the behavior of a material that has both viscous and elastic properties. Steel does not exhibit viscoelastic behavior at ordinary deformation rates and its stress is solely dependent on the deformation, not the rate of deformation. Therefore, it is not correct to say that steel is viscoelastic within the elastic limit.
  • #1
lingesh
28
2
Viscoelasticity is a property of a material that exibits both viscous and elastic properties..

When under load,within elastic limit,steel offers resistance to deformation (viscous) and regains shape after removal of load..So is it right to say steel is VISCOELASTIC in elastic limit?
 
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  • #3
lingesh said:
Viscoelasticity is a property of a material that exibits both viscous and elastic properties..

When under load,within elastic limit,steel offers resistance to deformation (viscous) and regains shape after removal of load..So is it right to say steel is VISCOELASTIC in elastic limit?
No. Steel is not viscoelastic at ordinary deformation rates and does not exhibit viscous type behavior. The stress is strictly a function of the deformation and not the rate of deformation.

Chet
 

FAQ: Viscoelasticity of Steel: Is it Right?

What is viscoelasticity in steel?

Viscoelasticity in steel refers to the ability of steel to exhibit both elastic and viscous behavior under applied stress. This means that when steel is subjected to stress, it will deform and then recover partially over time, rather than returning to its original shape immediately.

Why is viscoelasticity important in steel?

Viscoelasticity is important in steel because it allows the material to withstand large amounts of stress without breaking. This is especially useful in applications where the steel is subjected to repetitive stress, such as in buildings and bridges.

How is viscoelasticity measured in steel?

Viscoelasticity in steel is typically measured through a test called a creep test. This involves applying a constant load to a steel sample and measuring the amount of deformation over time. The resulting data can be used to determine the viscoelastic properties of the steel.

What factors affect the viscoelasticity of steel?

The viscoelasticity of steel can be affected by several factors, including temperature, strain rate, and the composition and microstructure of the steel. Higher temperatures and faster strain rates typically result in a more viscous behavior, while changes in the steel's composition or microstructure can alter its elastic properties.

Is viscoelasticity desirable in steel?

In most cases, viscoelasticity is desirable in steel as it allows the material to withstand large amounts of stress without breaking. However, in some applications where precise and immediate deformation is required, such as in precision machinery, viscoelasticity may be undesirable.

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