کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
252689 502971 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Asymptotic homogenization algorithm for reinforced metal-matrix elasto-plastic composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Asymptotic homogenization algorithm for reinforced metal-matrix elasto-plastic composites
چکیده انگلیسی

The theory of the two-scale convergence was applied to homogenization of initial flow stresses and hardening constants in some exponential hardening laws for elasto-plastic composites with a periodic microstructure. The theory is based on the fact that both the elastic and the plastic part of the stress field two-scale converge to a limit, which can be factorized by parts, one of which depends only on the macroscopic, and the other one – only on the microscopic characteristics. The first factor is represented in terms of the homogenized stress tensor and the second factor – in terms of stress concentration tensor, that relates to the micro-geometry and elastic or plastic micro-properties of composite components. The theory was applied to a composite, that consists of the metallic elasto-plastic matrix with Ludwik and Hocket–Sherby hardening law and pure elastic silica inclusions. Results were compared with those of averaging based on the self-consistent methods.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 92, Issue 7, June 2010, Pages 1581–1590
نویسندگان
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