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Stiffness is the extent to which an object resists deformation in response to an applied force. [ 1 ] The complementary concept is flexibility or pliability: the more flexible an object is, the less stiff it is.
Stiffness, a material's resistance to bending; Joint stiffness, pain and/or reduced range of motion of body parts in humans and animals; Arts and music.
Rigor mortis [a] (from Latin rigor 'stiffness' and mortis 'of death'), or postmortem rigidity, is the fourth stage of death.It is one of the recognizable signs of death, characterized by stiffening of the limbs of the corpse caused by chemical changes in the muscles postmortem (mainly calcium). [1]
Nonetheless, definitions based upon these characteristics are in common use by some authors and are good clues as to the presence of stiffness. Lambert refers to these as "statements" rather than definitions, for the aforementioned reasons. A few of these are: A linear constant coefficient system is stiff if all of its eigenvalues have negative ...
Arterial stiffness occurs as a consequence of biological aging, arteriosclerosis and genetic disorders, such as Marfan, Williams, and Ehlers-Danlos syndromes. [1] Inflammation plays a major role in arteriosclerosis and arterial stiffness. [ 2 ]
Elastic constants are specific parameters that quantify the stiffness of a material in response to applied stresses and are fundamental in defining the elastic properties of materials. These constants form the elements of the stiffness matrix in tensor notation, which relates stress to strain through linear equations in anisotropic materials.
Young's modulus is the slope of the linear part of the stress–strain curve for a material under tension or compression.. Young's modulus (or Young modulus) is a mechanical property of solid materials that measures the tensile or compressive stiffness when the force is applied lengthwise.
The definition of capacitance (C) is the charge (Q) stored per unit voltage (V).= Elastance (S) is the reciprocal of capacitance, thus, [1]= . Expressing the values of capacitors as elastance is not commonly done by practical electrical engineers, but can be convenient for capacitors in series since their total elastance is simply the sum of their individual elastances.