کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7177449 1467029 2018 46 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational analysis of particle reinforced viscoelastic polymer nanocomposites - statistical study of representative volume element
ترجمه فارسی عنوان
تجزیه و تحلیل محاسباتی نانوکامپوزیت های پلی کربنات وکیوالاستیک تقویت شده با ذرات - مطالعه آماری عنصر حجم نمونه
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
The concept of representative volume element (RVE) is widely used to determine the effective material properties of random heterogeneous materials. In the present work, the RVE is investigated for the viscoelastic response of particle-reinforced polymer nanocomposites in the frequency domain. The smallest RVE size and the minimum number of realizations at a given volume size for both structural and mechanical properties are determined for a given precision using the concept of margin of error. It is concluded that using the mean of many realizations of a small RVE instead of a single large RVE can retain the desired precision of a result with much lower computational cost (up to three orders of magnitude reduced computation time) for the property of interest. Both the smallest RVE size and the minimum number of realizations for a microstructure with higher volume fraction (VF) are larger compared to those of one with lower VF at the same desired precision. Similarly, a clustered structure is shown to require a larger minimum RVE size as well as a larger number of realizations at a given volume size compared to the well-dispersed microstructures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanics and Physics of Solids - Volume 114, May 2018, Pages 55-74
نویسندگان
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