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Cyclic plasticity model using one yield surface only

Ristinmaa, Matti LU (1995) In International Journal of Plasticity 11(2). p.163-181
Abstract
A time-independent plasticity model using only one yield surface and capable of predicting cyclic loading is presented. Memory points are defined to monitor the loading history; these memory points have the property that they can be created as well as disappear during the load history. The generalized plastic modulus is defined from these memory points in such a way that it will be continuous and provide a smooth transition from elastic to elastic-plastic behavior. The model is formulated for general pressure-insensitive plasticity. Because only one yield surface is used, this framework allows all types of yield functions to be easily implemented. For piecewise linear response, the concept of memory points may be interpreted in terms of... (More)
A time-independent plasticity model using only one yield surface and capable of predicting cyclic loading is presented. Memory points are defined to monitor the loading history; these memory points have the property that they can be created as well as disappear during the load history. The generalized plastic modulus is defined from these memory points in such a way that it will be continuous and provide a smooth transition from elastic to elastic-plastic behavior. The model is formulated for general pressure-insensitive plasticity. Because only one yield surface is used, this framework allows all types of yield functions to be easily implemented. For piecewise linear response, the concept of memory points may be interpreted in terms of the classic Mroz model. Moreover, a generalization of the Mroz model for a smoothly varying response can be made. As an important example of pressure-insensitive plasticity, the von Mises criterion is incorporated into the model to illustrate the response for different load situations. Of particular interest is cyclic hardening, mean stress relaxation, and ratchetting. A simple law for controlling the ratchetting is also introduced. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Plasticity, cyclic plasticity
in
International Journal of Plasticity
volume
11
issue
2
pages
163 - 181
publisher
Elsevier
external identifiers
  • Scopus:0029207705
ISSN
0749-6419
DOI
10.1016/0749-6419(94)00044-1
language
English
LU publication?
yes
id
03d1c954-b8a8-4034-9b76-cd563f25073d (old id 2223678)
date added to LUP
2011-12-06 13:47:06
date last changed
2016-04-16 12:18:30
@misc{03d1c954-b8a8-4034-9b76-cd563f25073d,
  abstract     = {A time-independent plasticity model using only one yield surface and capable of predicting cyclic loading is presented. Memory points are defined to monitor the loading history; these memory points have the property that they can be created as well as disappear during the load history. The generalized plastic modulus is defined from these memory points in such a way that it will be continuous and provide a smooth transition from elastic to elastic-plastic behavior. The model is formulated for general pressure-insensitive plasticity. Because only one yield surface is used, this framework allows all types of yield functions to be easily implemented. For piecewise linear response, the concept of memory points may be interpreted in terms of the classic Mroz model. Moreover, a generalization of the Mroz model for a smoothly varying response can be made. As an important example of pressure-insensitive plasticity, the von Mises criterion is incorporated into the model to illustrate the response for different load situations. Of particular interest is cyclic hardening, mean stress relaxation, and ratchetting. A simple law for controlling the ratchetting is also introduced.},
  author       = {Ristinmaa, Matti},
  issn         = {0749-6419},
  keyword      = {Plasticity,cyclic plasticity},
  language     = {eng},
  number       = {2},
  pages        = {163--181},
  publisher    = {ARRAY(0x95d9bd8)},
  series       = {International Journal of Plasticity},
  title        = {Cyclic plasticity model using one yield surface only},
  url          = {http://dx.doi.org/10.1016/0749-6419(94)00044-1},
  volume       = {11},
  year         = {1995},
}