کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4922655 1430194 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of thermal expansion behavior of densely packed Al/SiC composites
ترجمه فارسی عنوان
مدلسازی رفتار گسترش حرارتی آلومینیوم / سی کامپوزیت با ضخامت بسته بندی شده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In this paper the approach for finite element (FE) modeling and analysis of thermal expansion behavior of densely packed Al/SiC composites is proposed. The coefficient of linear thermal expansion (CTE) is predicted from 50 °C to 500 °C by considering temperature dependent linear elastic and elastoplastic matrix material behavior. Three dimensional representative volume elements (RVEs) are generated to model the composite's microstructures. In order to study the effect of thermal residual stresses, first the RVEs are simulated for cooling process from processing temperature to room temperature and thermal residual stresses are estimated by considering different mechanical behaviors of Al matrix. Next, the thermal expansion behavior is examined with existing residual stresses. The presence of thermal residual stresses is observed to influence the effective CTE in the initial temperature range (25 °C-100 °C) of heating. The contact state of reinforced particles significantly influences the thermal expansion behavior. It is observed that the effective CTE of composites with non-interpenetrating microstructure is higher than that of the composites having interpenetrating microstructure. The effects of voids on the thermal expansion behavior are analyzed further.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 102–103, 15 December 2016, Pages 77-88
نویسندگان
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