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Strain is the extension per unit length. This is a deformation of a solid due to stress in the form of elongation or contraction. Where: Δ L = extension (m) L = original length (m) The strain is a dimensionless unit because it’s the ratio of lengths. Sometimes strain might be written as a percentage.
An object or medium under stress becomes deformed. The quantity that describes this deformation is called strain. Strain is given as a fractional change in either length (under tensile stress) or volume (under bulk stress) or geometry (under shear stress). Therefore, strain is a dimensionless number.
Strain is the ratio of the extension (or compression) and the original length. This is a deformation of a solid due to stress in the form of elongation or contraction. Note that strain is a dimensionless unit because it’s the ratio of lengths. Strain equation. The Young Modulus. Young Modulus.
Strain is the ratio of the extension (or compression) and the original length. This is a deformation of a solid due to stress in the form of elongation or contraction. Note that strain is a dimensionless unit because it’s the ratio of lengths. Strain equation. The Young Modulus. Young Modulus.
In the language of physics, two terms describe the forces on objects undergoing deformation: stress and strain. Stress is a quantity that describes the magnitude of forces that cause deformation. Stress is generally defined as force per unit area .
ε = strain - unit-less. E = Young's modulus (Modulus of Elasticity) (Pa, (N/m 2), psi (lb f /in 2)) Young's modulus can be used to predict the elongation or compression of an object when exposed to a force; Note that strain is a dimensionless unit since it is the ratio of two lengths.
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We can combine all these factors into one equation for Δ L: Δ L = 1 Y F A L 0, 5.30. where Δ L is the change in length, F the applied force, Y is a factor, called the elastic modulus or Young’s modulus, that depends on the substance, A is the cross-sectional area, and L 0 is the original length.