...
It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume.density or molar volume :
LaTeX Math Block |
---|
|
K = \rho \cdot \frac{\partial p}{\partial \rho} = - V_m \cdot \frac{\partial p}{\partial V_m} |
It is inverse to corresponding to compressibility :
LaTeX Math Block |
---|
|
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 most popular material Bulk modulus are:
Isothermal Bulk modulus | Isentropic Bulk modulus |
---|
| |
LaTeX Math Block |
---|
| K_T = \rho \cdot \left( \frac{\partial p}{\partial \rho} \right)_T |
|
LaTeX Math Block |
---|
| K_S = \rho \cdot \left( \frac{\partial p}{\partial \rho} \right)_S |
|
See also
...
Physics / Mechanics / Continuum mechanics / Continuum body
...