کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
497836 862946 2015 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variational multiscale a posteriori error estimation for systems. Application to linear elasticity
ترجمه فارسی عنوان
ارزیابی خطای چند بعدی برای پسوند خطی برای سیستم. کاربرد الاستیسیته خطی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی


• An explicit residual-based error estimator is proposed for linear elasticity.
• The constants of the method are derived from the variational multiscale theory.
• Fine-scale Green’s function tensor has been explicitly computed.
• Attained global and local efficiencies are satisfactory in the H1 semi-norm.
• The error estimate involves little computational effort and it is easy to implement.

This paper presents an explicit   residual-based a posteriori error estimator for linear elasticity. The method is derived from the variational multiscale theory, where the subgrid scales and the constants of the method are calculated explicitly from fine-scale Green’s functions. Several numerical examples are presented, showing satisfactory local and global efficiencies when the H1H1-seminorm is employed. The formulation, which is applied to plane stress problems, can be easily extended to other elasticity problems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 285, 1 March 2015, Pages 291–314
نویسندگان
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