What is elastic strain in physics?

What is elastic strain in physics?

Elasticity, Stress, and Strain. Elasticity is a measure of how much an object deforms (strain) when a given stress (force) is applied.

How do you determine elastic strain?

Up to the elastic limit, the strain in the material is also elastic and will be recovered when the load is removed so that the material returns to its original length….Elastic and Plastic Strain.

Elastic Strain:	εe = σ/E
Plastic Strain:	εp = ε − εe

What is the causes of strain?

What causes a strain? A strain is caused by twisting or pulling a muscle or tendon. Strains can be acute or chronic. An acute strain is caused by trauma or an injury such as a blow to the body; it can also be caused by improperly lifting heavy objects or over-stressing the muscles.

How earthquakes occur according to the elastic rebound theory?

In geology, the elastic-rebound theory is an explanation for how energy is released during an earthquake. Then they separate with a rupture along the fault; the sudden movement releases accumulated energy, and the rocks snap back almost to their original shape.

What is the reason for elastic deformation Mcq?

What is the reason for elastic deformation? Explanation: On application of small amount of load, atoms may displace to a fraction of interatomic distance. It is known as elastic deformation.

What is the valid reason for elastic deformation in polymers?

Elastic deformation in polymers is due to Slight adjust of molecular chains.

What happen when bodies are deformed beyond elastic limit?

When stresses up to the elastic limit are removed, the material resumes its original size and shape. Stresses beyond the elastic limit cause a material to yield or flow. For most brittle materials, stresses beyond the elastic limit result in fracture with almost no plastic deformation.

What are examples of elastic materials?

Examples: Rubber bands and elastic and other stretchy materials display elasticity.

What determines elastic limit?

Determining the elastic limit of a material involves the measurement of the greatest stress that can be applied to a sample without causing permanent deformation. It is equal to the stress at which the rate of strain is 50% greater than at zero stress.

Where does the elastic region end?

The elastic region ends and the plastic region begins at the yield point (E). In the plastic region, a little more stress causes a lot more strain because the material is changing shape at the molecular level.

How is elastic strain related to applied stress?

It can easily be demonstrated that, for a given total dislocation density, the elastic strain energy due to applied stress is identical for a homogeneous and an inhomogeneous distribution of dislocations. The total elastic strain energy counts the elastic strain energies due both to the presence of dislocations and the applied stress.

How is a viscous strain different from an elastic strain?

Elastic strains are influenced by the bitumen and the aggregate, while viscous strain derives only from the bitumen. Yukio Ueda, Ninshu Ma, in Welding Deformation and Residual Stress Prevention, 2012 The elastic strains can be measured by strain gauges attached to measuring positions or nondestructive measuring methods such as an X-ray method.

What happens when the strain on an object is greater than the elastic limit?

If the strain on an object is greater than the elastic limit of the object, it will permanently deform or eventually fracture. Fracture strength is a measure of the force needed to break an object.

What happens when a strain is applied to a material?

Materials cannot stretch forever. When a strain is applied to a material it deforms elastically proportional to the force applied. However, after it has deformed a certain amount, the object can no longer take the strain and will break or fracture. The zone in which it bends under strain is called the elastic region.