# Bulk Modulus

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## bulk modulus

[¦bəlk ′mäj·ə·ləs]
(mechanics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Bulk Modulus

the ratio of the value of uniform pressure to the value of the relative volume compression caused by this pressure.

References in periodicals archive ?
Munro, Effective Medium Theory of the Porosity Dependence of Bulk Moduli, J.
The article presented a new technique to monitor shear and bulk moduli of rubber for FEA.
* Current relaxation methods in the rubber industry are compressive, whereas finite element codes require decay in shear and bulk moduli;
where [micro] and K are the shear and bulk moduli for the composite, [phi] is the volume fraction, [less than][epsilon][greater than] is the average shear strain, [less than]e[greater than] is the average dilatational strain, and subscripts m and i refer to the matrix and the inclusion respectively.
These equations are numerically solved to yield the values of effective shear and bulk moduli for the composite.
Relaxation tests allow the measurement of shear and bulk moduli at different temperatures, for instance at T = [T.sub.o] and T = [T.sub.o] [+ or -] [Delta]T where [T.sub.o] is a reference temperature for which h([T.sub.o]) = 0.
The bulk moduli of PS and PVAc calculated from the excess enthalpy/volume data are in a relatively good agreement with normally reported K values usually obtained by hydrostatic means.
E, G, K and [Nu] = Young's modulus, shear and bulk moduli and Poisson's ratio of the isotropic phases, respectively.

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