کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
800979 1467693 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Plasticity, internal structure and phase field model
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Plasticity, internal structure and phase field model
چکیده انگلیسی

The model presented here is based on the assumption that the plastic phase is due to a variation of the strain generating a dislocation migration, which in turn implies a different material response. That is, the transition from elastic to plastic behavior is related with two different internal or mesoscopic structures. So, within the Landau theory on phase transitions, and via the notion of order parameter, we suggest a model for a hardening plasticity by a second order phase transition, able to describe the elastic–plastic transformation. The differential problem related with this new variable will be represented by the Ginzburg–Landau equation. The model is supplemented by a differential constitutive equation among the strain, the stress, and the order parameter. By this system, we are able to obtain the classical behavior of hardening plastic phase diagrams.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics Research Communications - Volume 43, July 2012, Pages 29–33
نویسندگان
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