Strain-Hardening Topography of Elastic-Plastic Materials

1983 ◽  
Vol 50 (4a) ◽  
pp. 795-801 ◽  
Author(s):  
J. Casey ◽  
H. H. Lin

In the context of a purely mechanical rate-type theory of plasticity, a special set of constitutive equations is discussed. A method [1,2] of characterizing strain-hardening behavior is utilized to examine the different types of response that may be exhibited. Loci of constant strain-hardening behavior in stress space and regions of hardening, softening, and perfectly plastic behavior are determined.

1981 ◽  
Vol 48 (2) ◽  
pp. 285-296 ◽  
Author(s):  
J. Casey ◽  
P. M. Naghdi

In the context of a purely mechanical, rate-type theory of elastic-plastic materials and utilizing a strain space formulation introduced in [1], this paper is concerned mainly with developments pertaining to strain-hardening behavior consisting of three distinct types of material response, namely, hardening, softening, and perfectly plastic behavior. It is shown that such strain-hardening behavior may be characterized by a rate-independent quotient of quantities occurring in the loading criteria of strain space and the corresponding loading conditions of stress space. With the use of special constitutive equations, the predictive capability of the results obtained are illustrated for strain-hardening response and saturation hardening in a uniaxial tension test.


2021 ◽  
pp. 160623
Author(s):  
Bo Guan ◽  
Yitao Wang ◽  
Jianbo Li ◽  
Yu Zhang ◽  
Hao Wang ◽  
...  

2013 ◽  
Vol 61 (2) ◽  
pp. 494-510 ◽  
Author(s):  
David R. Steinmetz ◽  
Tom Jäpel ◽  
Burkhard Wietbrock ◽  
Philip Eisenlohr ◽  
Ivan Gutierrez-Urrutia ◽  
...  

2005 ◽  
Vol 04 (04) ◽  
pp. 745-751 ◽  
Author(s):  
A. V. NAGASEKHAR ◽  
TICK-HON YIP ◽  
S. LI

Equal channel angular extrusion/pressing multipass simulations were carried for two routes, Route A and Route C, by using finite element code Abaqus/Explicit. Realistic parameters like strain hardening behavior of material, friction between the sample and die were considered for simulations. The strain homogeneity and deformation behavior of samples during multipass ECAE with different routes were studied. The deformation behavior of the sample processed through Route A is smooth. Accordingly strain homogeneity of the samples was more of a possibility with Route A than with Route C.


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