flow stress


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flow stress

[′flō ‚stres]
(mechanics)
The stress along one axis at a given value of strain that is required to produce plastic deformation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Hence, it is of considerable significance to study flow stress behaviors of magnesium alloys.
With the strain increasing, when multiplication of dislocation due to continued deformation and annihilation of dislocation due to dynamic softening are in dynamic balance, flow stress would keep constant, and deformation of metals would come to a steady stage in which complete dynamic recrystallization grains have equiaxed shape and keep constant size.
where [[sigma]'.sub.ij] = [[sigma].sub.ij] - [1/3][[delta].sub.ij][[sigma].sub.ij] is the deviatoric stress, [~.[sigma]] = [square root of ([3/2][[sigma]'.sub.ij][[sigma]'.sub.ij])] is the equivalent stress or flow stress, [~.[epsilon]] = [square root of ([2/3][[epsilon].sub.ij][[epsilon].sub.ij])] is equivalent strain, and [[??].[epsilon]] = [square root of ([2/3][dot.[epsilon].sub.ij][dot.[epsilon].sub.ij])] is the equivalent strain rate.
Curves of flow stress change as the function of strain (so-called flow curves) enables us to forecast behaviour of the material during plastic working [9].
For the purposes of these rating actions, KBRA performed an analysis consistent with its RMBS methodology through a review of transaction performance to date, generating updated pool loss estimates and examining capital structure behavior under various cash flow stress scenarios, where applicable.
25, 2033 in Fitch's 'AAAsf' and 'AAsf' cash flow stress scenarios.
The present investigation aims to construct the high temperature flow stress model of AZ81E and develop processing map for hot working of AZ81E including optimizing its hot workability.
Constitutive models including the physical model [18] and phenomenological model [19] have been developed to describe the flow stress and mechanical behavior of materials under various loading conditions.
When the materials were tested below [T.sub.g], by modifying the strain rate or the temperature, the materials exhibited different flow stress behaviors.
where [sigma] is the equivalent flow stress, [epsilon] is the equivalent plastic strain, [??] is the equivalent plastic strain rate, [[??].sub.0] is the reference equivalent plastic strain, T is the workpiece temperature, [T.sub.m] is the material melting temperature, [T.sub.r] is the room temperature, and other letters are related to workpiece material from experiment measure.