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The bulk modulus (or or ) of a substance is a measure of the resistance of a substance to bulk compression. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume .
What Is Bulk Modulus of Elasticity? Bulk Modulus of Elasticity Formula; Solved Example; Uses of Bulk Modulus; Frequently Asked Questions – FAQs
The Bulk Modulus Elasticity - or Volume Modulus - is a material property characterizing the compressibility of a fluid - how easy a unit volume of a fluid can be changed when changing the pressure working upon it.
It can be used to predict compression, calculate density, and indirectly indicate the types of chemical bonding within a substance. The bulk modulus is considered a descriptor of elastic properties because a compressed material returns to its original volume once the pressure is released.
The bulk modulus of elasticity is a measure of how much a material resists changes in volume when pressure is applied. In other words, it’s a measure of a material’s stiffness or resistance to compression.
Bulk modulus, numerical constant that describes the elastic properties of a solid or fluid when it is under pressure on all surfaces. The applied pressure reduces the volume of a material, which returns to its original volume when the pressure is removed.
What is Bulk Modulus of Elasticity? Bulk modulus of elasticity is defined as the proportion of volumetric stress linked to the volumetric strain of definite material, although the deformation of the material is within the elastic limit.
The Bulk Modulus, denoted as K, is a parameter that quantifies this elastic response, particularly to changes in volume under pressure. Mathematically, it is defined as the ratio of pressure increase to the relative decrease in volume: K = −V × ΔP ΔV. Here, V represents the original volume, ΔP the change in pressure, and ΔV the change in volume.
The bulk modulus (K) describes volumetric elasticity, or the tendency of an object to deform in all directions when uniformly loaded in all directions; it is defined as volumetric stress over volumetric strain, and is the inverse of compressibility. The bulk modulus is an extension of Young's modulus to three dimensions.
Bulk Modulus of Elasticity: Within the elastic limit, the ratio of volumetric stress to the corresponding volumetric strain in a body is always constant, which is called as Bulk modulus of elasticity. It is denoted by the letter ‘K’. Its S.I. Unit of stress is N m -2 or Pa (pascal) and its dimensions are [L -1 M 1 T -2]. Mathematically,