Strain

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Forging new generations of engineers
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Strain
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Strain

• Strain is a measurement of deformation in a
  structure due to applied forces.
• If a rod of length L and constant cross section
  area A has a force P applied at the end, the
  deformation will be ?.

L
?
A
P
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Strain

• Strain is calculated from
• Strain Deformation
• Original Length
• or
• e ? / L

• Strain is deformation per unit length, a
• dimensionless quantity

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Stress- Strain Curve

• Stress and Strain are related through the stress
  strain curve and Hookes Law in the elastic
  region.

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Stress- Strain Curve
Hookes Law
E is the Elastic Modulus. E is the slope of the
line in the elastic region.