دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the ratio of the increment of some specified form of stress to the increment of some specified form of strain, such as bulk modulus, shear modulus, or Youngs modulus. Also called coefficient of elasticity. elasticity modulus, elastic modulus.

stress over strain. A measure of stiffness or Young’s Modulus (E). Rocks are ½ to 12 x 106 psi and mild steel is 30 x 106 psi. Modulus refers to stress at a predetermined level of elongation, usually at 100% elongation. The higher the modulus of a compoun

n: a coefficient of elasticity that expresses the ratio of the force per unit area that deforms the substance laterally and the shear produced by this force.

shear stress over angle of deformation.