کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5016733 | 1465576 | 2017 | 96 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gradient-extended two-surface damage-plasticity: Micromorphic formulation and numerical aspects
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Gradient-extended two-surface damage-plasticity: Micromorphic formulation and numerical aspects Gradient-extended two-surface damage-plasticity: Micromorphic formulation and numerical aspects](/preview/png/5016733.png)
چکیده انگلیسی
A regularized gradient-extended damage-plasticity model is discussed which is based on a micromorphic approach in the spirit of Forest (2009). Damage and plasticity are treated as independent but strongly coupled dissipative phenomena by means of a 'two-surface' formulation, i.e. by using separate yield and damage functions as well as appropriate loading/unloading conditions. By means of two independent dissipation potentials for plasticity and damage, thermodynamically consistent evolution equations are derived. The model accounts for nonlinear plastic as well as damage hardening. The models' implementation at the local integration point level, both using a local active set search strategy known from multisurface plasticity and a recent approach based on a reformulation of the model equations by means of the Fischer-Burmeister complementarity function, is discussed in detail. It is shown how the model can be implemented into finite elements and the four algorithmically consistent tangent operators are presented which are necessary to obtain quadratic convergence in a global Newton scheme. Various numerical benchmark tests performed in the study nicely indicate the model's ability to deliver mesh-independent results in coupled damage-plasticity finite element simulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Plasticity - Volume 97, October 2017, Pages 64-106
Journal: International Journal of Plasticity - Volume 97, October 2017, Pages 64-106
نویسندگان
Tim Brepols, Stephan Wulfinghoff, Stefanie Reese,