sectional radius of inertia

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• Radius of gyration — is the name of several related measures of the size of an object, a surface, or an ensemble of points. It is calculated as the root mean square distance of the objects parts from either its center of gravity or an axis.Applications in structural… …   Wikipedia

• List of moments of inertia — The following is a list of moments of inertia. Mass moments of inertia have units of dimension mass × length2. It is the rotational analogue to mass. It should not be confused with the second moment of area (area moment of inertia), which is used …   Wikipedia

• Polar moment of inertia — is a quantity used to predict an object s ability to resist torsion, in objects (or segments of objects) with an invariant circular cross section and no significant warping or out of plane deformation.Ugural AC, Fenster SK. Advanced Strength and… …   Wikipedia

• Force — For other uses, see Force (disambiguation). See also: Forcing (disambiguation) Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate …   Wikipedia

• Bending — For other uses, see Bending (disambiguation). Flexure redirects here. For joints that bend, see living hinge. For bearings that operate by bending, see flexure bearing. Continuum mechanics …   Wikipedia

• Rotation around a fixed axis — Rotational motion can occur around more than one axis at once, and can involve phenomena such as wobbling and precession. Rotation around a fixed axis is a special case of rotational motion, which does not involve those phenomena. The kinematics… …   Wikipedia

• fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… …   Universalium

• Beam (structure) — A statically determinate beam, bending (sagging) under an evenly distributed load. A beam is a horizontal structural element that is capable of withstanding load primarily by resisting bending. The bending force induced into the material of the… …   Wikipedia

• Torsion constant — The torsion constant is a geometrical property of a beam s cross section which determines the relationship between angle of twist and applied torque.For a beam of uniform cross section along its length: heta = frac{TL}{JG} heta is the angle of… …   Wikipedia

• Stress-strain index — The stress strain index (SSI), of a bone, is a surrogate measure of bone strength [cite journal | author = Ward K, Roberts S, Adams J, Mughal M | title = Bone geometry and density in the skeleton of pre pubertal gymnasts and school children. |… …   Wikipedia

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium