On the quasi-yield surface concept in plasticity theory
Soldatos, Dimitris; Triantafyllou, Savvas P.
Savvas P. Triantafyllou
In this paper we provide deeper insights into the concept of the quasi-yield surface in plasticity theory. More specifically, in this work, unlike the traditional treatments of plasticity where special emphasis is placed on an unambiguous definition of a yield criterion and the corresponding loading-unloading conditions, we place emphasis on the study of a general rate equation which is able to enforce elastic-plastic behavior. By means of this equation we discuss the fundamental concepts of the elastic range and the elastic domain. The particular case in which the elastic domain degenerates into its boundary leads to the quasi-yield surface concept. We exploit this concept further by discussing several theoretical issues related to it and by introducing a simple material model. The ability of the model in predicting several patterns of the real behavior of metals is assessed by representative numerical examples.
|Journal Article Type||Article|
|Publication Date||Jul 12, 2017|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Soldatos, D., & Triantafyllou, S. P. (2017). On the quasi-yield surface concept in plasticity theory. ZAMM, 97(8), doi:10.1002/zamm.201600133|
|Keywords||Rate-independent plasticity, Quasi-yield surface, Integrability conditions, Holonomy, Large plastic deformations|
|Copyright Statement||Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf|
|Additional Information||This is the accepted version of the following article: Soldatos, D. and Triantafyllou, S. P. (2017), On the quasi-yield surface concept in plasticity theory. Z. Angew. Math. Mech.. doi:10.1002/zamm.201600133 which has been published in final form at http://onlinelibrary.wi...002/zamm.201600133/full|
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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