کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
498817 863014 2010 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A fast convergent rate preserving discontinuous Galerkin framework for rate-independent plasticity problems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A fast convergent rate preserving discontinuous Galerkin framework for rate-independent plasticity problems
چکیده انگلیسی

In this paper a finite element framework based on the incomplete interior penalty Galerkin formulation, a non-symmetric discontinuous Galerkin method, is consistently formulated for modeling plasticity problems with small deformation. Because of its pure displacement-based framework, this proposed discontinuous Galerkin method is possibly able to completely preserve numerical integration algorithms efficiently developed in the traditional continuous Galerkin framework. Besides stresses on element interior quadrature points, stresses on element surface quadrature points are also required to return on yielding surfaces in this discontinuous Galerkin framework, which is able to provide more accurate material yielding profiles than the continuous Galerkin framework. The performance of the proposed discontinuous Galerkin framework has been evaluated in detail for J2 and pressure-dependent plasticities using perfect plasticity, plasticity with hardening, and associative and non-associative material models. Quadratic convergent rates compatible to the tradition continuous Galerkin method for modeling plasticity problems have been achieved within a large penalty range in a nodal-based discontinuous Galerkin implementation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 199, Issues 49–52, 15 December 2010, Pages 3213–3226
نویسندگان
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