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Bulk modulus measures resistance of Continuum body to compression/decompression and to deformation and is inverse to Compressibility compressibility
: LaTeX Math Inline body c
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K = \frac{1}{c} |
Bulk modulus depends on the thermodynamic conditions at which it is measured and as such is not a material property.
The two major deformation medium compression/decompression processesprocesses of the medium are isothermal and isentropic which result in different values of Bulk modulus:
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In engineering practise, when the term Bulk modulus is used as material property it normally means Isothermal Compressibility:
. LaTeX Math Inline body K=K_T
For isotropic materials it is related to Young modulus (E) and Poisson's ratio (ν) as:
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K_T = \frac{E}{3 \, (1- 2\, \nu)} |
See also
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Physics / Mechanics / Continuum mechanics / Continuum Body / Deformation
[ Solid Mechanics ] [ Fluid Mechanics]
[Compressibility] [ Young modulus (E) ][ Poisson's ratio (ν) ]
[ Isothermal Compressibility ][ Isentropic Compressibility ]
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