Results 241 to 250 of about 4,725 (290)

On nonlinear kinematic hardening

Acta Mechanica, 1968
Traditionally, the kinematic hardening assumption is used in conjunction with an assumption that the stress-strain curve for simple tension can be approximated by a bilinear curve. This paper generalizes the concept of kinematic hardening for the case when the stress-strain law is nonlinear. It is shown that although a yield condition of the form
M A Eisenberg, Phillips A
exaly   +2 more sources

An Assessment of Kinematic Hardening Thermal Ratcheting

Journal of Engineering Materials and Technology, 1974
Analytical comparisons are made between the thermal ratcheting response of a kinematic hardening material, a perfectly plastic, and an isotropic hardening material for a two-element assembly. Significant differences were found in the range of mechanical and thermal loading for which ratcheting occurred and the magnitude of the strain accumulation when ...
T. M. Mulcahy
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Kinematic-Hardening in Zinc-Alloy Tubes

Journal of Applied Mechanics, 1965
The kinematic theory of strain-hardening is used to evaluate the post-yield behavior of tubular specimens subjected to axial force combined with internal pressure or torque. Prediction of yield-surface motion during strain-hardening is simplified through the use of piecewise linear yield criteria.
D. R. Jenkins
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Deformation gradient based kinematic hardening model

International Journal of Plasticity, 2005
A kinematic hardening model applicable to finite strains is presented. The kinematic hardening concept is based on the residual stresses that evolve due to different obstacles that are present in a polycrystalline material, such as grain boundaries ...
Mathias Wallin, Matti Ristinmaa
exaly   +3 more sources

Kinematic hardening of trusses

Ingenieur-Archiv, 1987
Polycrystalline materials are modelled using plastic trusses. The rods of the truss simulate the slip systems of a single crystal while the geometry of the truss controls the interaction between the different slip systems. For calculations of the evolution of the yield locus in the space of the nodal forces, i.e. in the generalized stress space, due to
Lippmann, H., Winter, W.
openaire   +1 more source

Kinematic hardening and Bauschinger effect

PAMM, 2019
AbstractThis paper studies a single crystal subjected to anti‐plane shear‐controlled load reversal within the thermodynamic dislocation theory. Numerical simulations of the governing equations demonstrate the size‐dependent kinematic hardening and the Bauschinger effect. Both are caused by the excess dislocations.
Tuan Minh Tran, Khanh Chau Le
openaire   +1 more source

Kinematic hardening in creep of Zircaloy

Journal of Nuclear Materials, 2016
Abstract Results of biaxial creep tests with stress changes on Zircaloy-2 tube samples are presented. A Hollomon-type viscoplastic strain hardening model is extended by the Armstrong-Frederic nonlinear kinematic hardening law, resulting in a mixed (i.e. isotropic and kinematic) strain hardening model.
Radan Sedláček, Dietmar Deuble
openaire   +1 more source

Kinematic hardening of granular materials

Ingenieur-Archiv, 1990
Some recently developed constitutive equations (yield function, loading criteria, flow rule) for kinematic hardening of granular materials are discussed and some relevant material dependent parameters are determined on the basis of test results.
R. Boer, W. Brauns
openaire   +1 more source

Kinematic hardening of a porous limestone

Rock Mechanics and Rock Engineering, 1984
A concept for a kinematic hardening yield surface in stress space for Cordova Cream limestone (Austin Chalk) developed by Celle and Cheatham (1981) has been improved using Ziegler's modification of Prager's hardening rule (Ziegler, 1959). Data to date agree with the formulated concepts. It is shown how kinematic hardening can be used to approximate the
J. B. Cheatham, M. B. Allen, C. C. Celle
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A Multiplicative AF Kinematic Hardening Model

, 2008
In this work a new scheme of a kinematic hardening model in plasticity is proposed, where the novelty is to consider one of the two coefficients of the Armstrong and Frederick (AF) [1] evolution equation for the back stress, function of another ...
Kourousis, Kyriakos, Dafalias, Yannis, Saridis, George   +2 more
openaire   +2 more sources