bulk modulus


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Related to bulk modulus: Poisson's ratio, Young's modulus, Shear modulus

bulk modulus

n
(General Physics) a coefficient of elasticity of a substance equal to minus the ratio of the applied stress (p) to the resulting fractional change in volume (dV/V) in a specified reference state (dV/V is the bulk strain). Symbol: K
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Noun1.bulk modulus - the ratio of the change in pressure acting on a volume to the fractional change in volume
coefficient of elasticity, elastic modulus, modulus of elasticity - (physics) the ratio of the applied stress to the change in shape of an elastic body
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References in periodicals archive ?
s; K is bulk modulus, GPa; [G.sub.1] is elastic modulus of Kelvin bulk, GPa; [G.sub.2] is elastic modulus of Maxwell bulk, GPa.
being p the pressure, V the volume, [beta] the fluid bulk modulus, [Q.sub.i] the flow rate through the generic port i-th (positive if ingoing), [omega] and [phi] respectively the angular speed and the position of the shaft.
where G, v, and K are the shear modulus, Poisson's ratio, and bulk modulus of coal, respectively, [alpha] and [beta] are the Biot coefficients of matrix and fracture, [[epsilon].sub.s] is gas sorption strain, and [P.sub.mmix] and [P.sub.fmix] are the pore pressure in fractures and matrix.
where [[rho].sub.w] is water density and [[kappa].sub.w] is the bulk modulus. Based on the standard theories, the variational form of (4) can be got as
The effective bulk modulus and the amendment formula of resonance frequency were established.
where [[beta].sub.1] represents the water bulk modulus and [q.sub.1] represents the vector of water seepage velocity; the first and second terms of equation (9) are the change of water quantity due to water pressure and water flux flowing out, respectively.
However, altering the temperature not only changes stress but also modifies the physical properties of rock, including the rock bulk modulus and thermal expansion coefficient.
The Bulk Modulus of the material was calculated from confined compressive test.
The article presents the results of studying the bulk microstructure and measuring both sonic velocities [c.sub.L] and [c.sub.T] and elastic modules, bulk modulus K and shear modulus G, of epoxy-nanocarbon composites with different types of carbon nanofillers--graphite nanoplatelets (GNP) and multiwall carbon nanotubes (MWCNT).
The entrapped gas within the oil has been reported to increase the volume of the mixed fluid, and thereby lead to reduced fluid bulk modulus and fluid density [7,16].
First, the samples were submitted to isotropic compression and dilatation tests to determine the bulk modulus B.