کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
498256 862980 2014 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-ordinary state-based peridynamic analysis of stationary crack problems
ترجمه فارسی عنوان
غیر عادی در حیطه تجزیه و تحلیل پدیدنامیکی مشکلات ترکیبات ثابت
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی

An implicit implementation of the non-ordinary state-based peridynamics formulation for quasi-static linearly elastic solids is presented. Emphasis is placed on assessing the accuracy of the numerical scheme in the vicinity of the crack front and other sources of stress concentration. We also present a comparative study of methods used to control the zero-energy modes inherent in the nonlocal definition of the strain tensor and reduce the spurious oscillations present particularly in regions of high strain gradients. The accuracy of the peridynamics scheme, including the impact of the lattice spacing and configuration, is assessed by performing an analysis of the near-tip stress and displacement fields (K-fields) for 2D problems. The manuscript also summarizes a verification study based on the classical 3D penny-shaped crack problem and a validation study of a 3D notched fracture specimen.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 272, 15 April 2014, Pages 233–250
نویسندگان
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