bulk modulus
- noun
- /bʌlk ˈmɒdʒʊləs/
- Specialized
- The bulk modulus of the material indicates how well it resists compression under pressure.
Examples
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The argument commonly made for this assumption is that the shear stiffness of soft tissue is so low that any plausible value for the bulk modulus renders the tissue virtually incompressible.
Academic text (1993) -
So let's say somebody asked you to calculate the temperature dependence of the bulk modulus of the material.
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OK, But if you had that curve already, well then you've also got the bulk modulus, which is pretty cool.
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However, if the presence of the Laves phase at the interface may help to improve the coherency degree of the interface, one may also think that the Laves phase can make the interface region brittle, since their bulk modulus is quite high.
Academic text (2018) -
It is interesting that the compression wave goes into the volume from layer d.sub.T, having generated it, and becomes quasi-linear, since the compression pressures in this wave are comparable (slightly lower than) the bulk modulus at the values of F.sub.abs under study.
Academic text (2018) -
Engineers often need to know the bulk modulus when designing structures that must withstand heavy loads.
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Understanding the bulk modulus helps scientists predict how materials behave when subjected to extreme forces.
Surface Forms
Morphology
The term combines 'bulk' (referring to volume or the material's overall size) with 'modulus' (a measure of resistance to deformation), so the compound denotes a measure of how resistant the material's volume is to compression. Though technical, the meaning is compositionally predictable and follows common cross‑linguistic compound patterns, so a learner who knows both constituents can reasonably infer the sense.
Etymology
Bulk modulus comes from the words bulk meaning the whole amount or volume of something and modulus meaning a number that measures something. Imagine pushing on a sealed ball: the bulk modulus tells you how hard the material is to 'squeeze', so it measures how much pressure makes the whole volume get smaller.