کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6748355 1430170 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wiggly strain localizations in peridynamic bars with non-convex potential
ترجمه فارسی عنوان
مکان های شلوغی در مکان های پرییدنامیک با پتانسیل غیر کانونی قرار می گیرند
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
We discuss the static states of a peridynamic nonlinear elastic bar of finite length in a hard device, which represents a continuum description of a complex hierarchical structure with interacting long-range crosslinkers, of the type encountered in biological systems. The nonlocal character of the model requires that edge conditions are defined on a boundary layer with the same length of the horizon, affecting the solution in the bulk interior. Assuming that the constituent microscopic ligaments contain bistable units governed by a non-convex potential, we show that the development of coexisting folded-unfolded phases, either synchronized or unsynchronized, induces in the displacement field the formation of undulations at a micro-scale of the length of the horizon, associated with strain localizations triggered at the bar ends. The equilibrium paths, found numerically with a pseudo-arc-length continuation method, become unstable within a certain range of elongation, suggesting the possible occurrence of a negative-stiffness response.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 138, 1 May 2018, Pages 1-12
نویسندگان
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