کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4922410 1430180 2017 58 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of competition between shear yielding and crazing in amorphous polymers' scratch
ترجمه فارسی عنوان
مدل سازی رقابت بین برش و سقوط در ابتدای پلیمرهای آمورف
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
An effective approach to investigate the complex scratch damage mechanisms of polymers, based on a suitable material constitutive model, is important to understand the damage evolution during scratch process. For the constitutive model capable of the description of the competition between shear yielding and crazing of amorphous polymers, a crazing initiation criterion was proposed. The scratch damage mechanisms of ductile polycarbonate (PC) and brittle poly (methylmethacrylate) (PMMA) were experimentally and numerically investigated. It can be found that, the shear yielding dominates the scratch process of PC, while the coexistence and competition between shear yielding and crazing are the main damage mechanisms for PMMA scratch. The effect of scratch velocity was also investigated. Those findings are helpful for the designing of scratch-resistant polymers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 124, 1 October 2017, Pages 215-228
نویسندگان
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