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Poisson's Ratio Formula

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Poisson's Ratio is defined as the ratio of the lateral and axial strain. For many metals and alloys, values of Poisson’s ratio range between 0.1 and 0.5. Check FAQs

𝛎 = - (\frac{ε L}{ε longitudinal})

𝛎 - Poisson's Ratio?ε_L - Lateral Strain?ε_longitudinal - Longitudinal Strain?

Poisson's Ratio Example

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Here is how the Poisson's Ratio equation looks like with Values.

Here is how the Poisson's Ratio equation looks like with Units.

Here is how the Poisson's Ratio equation looks like.

0.3 = - (\frac{-0.06}{0.2})

0.3 = - (\frac{-0.06}{0.2})

0.3 = - (\frac{-0.06}{0.2})

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Poisson's Ratio Solution

Follow our step by step solution on how to calculate Poisson's Ratio?

FIRST Step Consider the formula

𝛎 = - (\frac{ε L}{ε longitudinal})

Next Step Substitute values of Variables

∴

𝛎 = - (\frac{-0.06}{0.2})

Next Step Prepare to Evaluate

∴

𝛎 = - (\frac{-0.06}{0.2})

LAST Step Evaluate

∴

𝛎 = 0.3

Poisson's Ratio Formula Elements

Variables

Poisson's Ratio

Poisson's Ratio is defined as the ratio of the lateral and axial strain. For many metals and alloys, values of Poisson’s ratio range between 0.1 and 0.5.

Symbol: 𝛎

Measurement: NAUnit: Unitless

Note: Value should be between -1 to 0.5.

Formulas to find Poisson's Ratio

Lateral Strain

Lateral Strain is the ratio of change in diameter to original diameter.

Symbol: ε_L

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Lateral Strain

Longitudinal Strain

The Longitudinal Strain is ratio of change in length to original length.

Symbol: ε_longitudinal

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Longitudinal Strain

Other formulas in Longitudinal and Lateral Strain category

Go Shear Strain given Tangential Displacement and Original Length

𝜂 = \frac{t}{L 0}

Go Bulk Strain

B.S = \frac{∆V}{V T}

Go Tensile Strain

e tension = \frac{ΔL}{L}

Go Lateral Strain

Sd = \frac{∆d}{d}

How to Evaluate Poisson's Ratio?

Poisson's Ratio evaluator uses Poisson's Ratio = -(Lateral Strain/Longitudinal Strain) to evaluate the Poisson's Ratio, The Poisson's ratio formula is defined as a measure of the Poisson effect, the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading. Poisson's Ratio is denoted by 𝛎 symbol.

How to evaluate Poisson's Ratio using this online evaluator? To use this online evaluator for Poisson's Ratio, enter Lateral Strain (ε_L) & Longitudinal Strain (ε_longitudinal) and hit the calculate button.

FAQs on Poisson's Ratio

What is the formula to find Poisson's Ratio?

The formula of Poisson's Ratio is expressed as Poisson's Ratio = -(Lateral Strain/Longitudinal Strain). Here is an example- 0.3 = -((-0.06)/0.2).

How to calculate Poisson's Ratio?

With Lateral Strain (ε_L) & Longitudinal Strain (ε_longitudinal) we can find Poisson's Ratio using the formula - Poisson's Ratio = -(Lateral Strain/Longitudinal Strain).

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Poisson's Ratio Formula

Poisson's Ratio Example

Poisson's Ratio Solution

Poisson's Ratio Formula Elements

Other formulas in Longitudinal and Lateral Strain category

How to Evaluate Poisson's Ratio?

FAQs on Poisson's Ratio

Variable Name