کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5182562 1380992 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Molecular dynamics simulations on cyclic deformation of an epoxy thermoset
ترجمه فارسی عنوان
شبیه سازی دینامیک مولکولی در تغییر شکل سیلیس ترموستات اپوکسی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی

We use molecular dynamics simulations to study the thermo-mechanical response of a thermosetting polymer (diglycidyl ether of bisphenol A with 3,3′diamino-Diphenylsulfone) subject to cyclic loading for a family of tri-axial deformation paths and two different load levels and strain rates. We focus on how the relative amount of deviatoric and volumetric deformation affects strain accumulation and energy dissipation and find that uniaxial stress conditions lead to the highest rate of strain accumulation and dissipation. A characterization of the molecular-level processes responsible for strain accumulation provides insight into the observed role of volumetric and deviatoric deformations and explains the relatively low strain accumulation for purely deviatoric or volumetric loads. These results may help the design of polymer matrix composites with improved performance under cyclic loading conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 54, Issue 2, 24 January 2013, Pages 881-890
نویسندگان
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