Definitions for "Stiffness"
Ratio of an applied force or torque to change in position for a mechanical system.
The stiffness of a system with respect to a deformation (e.g., the stiffness of a spring with respect to stretching) is the second derivative of the energy with respect to the corresponding displacement; this measures the curvature of the potential energy surface along a particular direction. Positive stiffness is associated with stability, and a large stiffness can result in a small positional uncertainty in the presence of thermal excitation. Negative stiffnesses correspond to unstable locations on the potential energy surface. Alternative terms for stiffness include force gradient and rigidity.
A quality of paper alluding to its rigidity and resistance to bending and inflexibility.
Inability (as opposed to unwillingness) to flex the joints or stretch the musculature to the degree and in the way required to perform the task at hand (often confused with "Tense" or "Resistant.")
state of limbs which have become stiff due to the cold or due to being in a restricting position for too long. It arises during long winter rides, or on uncomfortable motorcycles. In extreme cases, stretching a stiff leg can result in an unexpected inertia which may cause the rider to fall when he stops! Riders should stretch their limbs frequently, even on the motorways.
A kart frame is designed to allow flexing, a very important property of the frame. The stiffness of the frame is a measure for how easily it can be flexed. Fast classes which race with sticky tires require a stiffer frame than slower classes which utilize harder tires. Stiffness can be changed by the setting of the torsion bars and the thickness of the rear axle.
The right, err, stiffness is very important to make sure paper feeds in and through machines properly, helping take the sheets on their merry way through complicated cogs and paths.
The right stiffness is necessary for good printer feeding and to cope with complicated paths through printing or copying devices.
the inelegance of someone stiff and unrelaxed (as by embarrassment)
The spring constant (of a piezo actuator).
Spring constant (for piezoelectric materials, not linear).
excessive sternness; "severity of character"; "the harshness of his punishment was inhuman"; "the rigors of boot camp"
the property of moving with pain or difficulty; "he awoke with a painful stiffness in his neck"
A condition that is often felt after exercise, especially weight orientated, or excessive running. Caused by the micro tears within your muscles as part of the body rebuilding phase. Will generally last 24 / 72 hours, with feelings felt normally the day after exercise.
The measure of a tape's flexibility and conformability.
The quality or state of being stiff; as, the stiffness of cloth or of paste; stiffness of manner; stiffness of character.