کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6703621 | 1428515 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Three-dimensional microscopic assessment of randomly distributed representative volume elements for high fiber volume fraction unidirectional composites
ترجمه فارسی عنوان
ارزیابی میکروسکوپی سه بعدی از عناصر حجم نمونه نمایشی تصادفی برای کامپوزیت های یک طرفه کسر حجم زیاد فیبر
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Generating realistic non-uniformly distributed three-dimensional representative volume element (RVE) for modeling the response of high fiber volume fraction composites is challenging. A novel rapid approach employing a random event-driven molecular dynamics simulation (EDMD) was proposed in this study for this purpose. Distributions of continuous unidirectional fibers in the RVEs were assessed using two approaches, namely Voronoi tessellations and radial distribution functions. The developed method was highly efficient in generating RVEs with realistic fiber dispersions. Furthermore, applying the corresponding periodic boundary conditions (PBCs) for finite element modeling is also arduous. A technique was developed within the commercial finite element software ABAQUS to rapidly produce required matching mesh patterns on opposite surfaces of the RVE, and to apply the corresponding PBCs using custom scripts. By coupling the EDMD approach and custom scripts within ABAQUS to rapidly generate and mesh RVEs with high fiber volume fractions, evaluation of the RVE response was greatly simplified. In- and out-of-plane elastic properties of unidirectional glass/epoxy composite in a range of 10-80% fiber volume fractions were determined and compared with analytical models, and available experimental data, with good correlation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 192, 15 May 2018, Pages 153-164
Journal: Composite Structures - Volume 192, 15 May 2018, Pages 153-164
نویسندگان
Aram Bahmani, Geng Li, Thomas L. Willett, John Montesano,