Mechanics
Bulk Modulus
Bulk modulus measures a material's resistance to uniform compression.
Variables
BPa
Bulk modulus
Resistance to compression
ΔPPa
Change in pressure
Applied pressure change
ΔVm³
Change in volume
Volume change
Vm³
Original volume
Initial volume
Derivation
B = -V(dP/dV). The negative sign ensures B is positive since ΔV is negative for positive ΔP.
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