Elastic behaviour Flashcards by Harrie Metcalfe

Q

when do metals show elastic behaviour?

A

for very small strains

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Q

what is the Young’s modulus equation?

A

σ = Eε

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Q

what is Young’s modulus?

A

resistance of a material to elastic deformation

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Q

what are the units for Young’s modulus?

A

Pa or N/m^2

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Q

what is Poisson’s ratio equation?

A

v = - lateral strain / axial strain

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Q

what is the symbol for Poisson’s ratio?

A

v

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Q

what are the units for Poisson ratio?

A

dimensionless

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Q

what is an isotropic solid?

A

has uniform physical properties in all directions

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Q

what is volumetric strain equation?

A

= ΔV / V0 ~ εx (1 - 2v)
where εx = ε in x direction

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