کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5178010 1502486 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stationary crack propagation in a two-dimensional visco-elastic network model
ترجمه فارسی عنوان
انتشار تکراری ثابت در یک شبکه دو بعدی ویسکوزیته الاستیک
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی


- A simple viscoelastic model numerically reproduces stationary crack propagation.
- We examined the relation between the constant velocity V and the fracture energy G.
- The results for V vs. G at different parameters collapse well onto a master curve.
- The master curve exhibit a clear scaling regime with lower and upper bounds.
- We elucidate the physical mechanism for the propagation with the bounds.

We investigate crack propagation in a simple two-dimensional visco-elastic model and find a scaling regime in the relation between the propagation velocity and energy release rate or fracture energy, together with lower and upper bounds of the scaling regime. On the basis of our result, the existence of the lower and upper bounds is expected to be universal or model-independent: the present simple simulation model provides generic insight into the physics of crack propagation, and the model will be a first step towards the development of a more refined coarse-grained model. Relatively abrupt changes of velocity are predicted near the lower and upper bounds for the scaling regime and the positions of the bounds could be good markers for the development of tough polymers, for which we provide simple views that could be useful as guiding principles for toughening polymer-based materials.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 120, 30 June 2017, Pages 94-99
نویسندگان
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