کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
499680 863055 2007 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Shear-band capturing using a multiscale extended digital image correlation technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Shear-band capturing using a multiscale extended digital image correlation technique
چکیده انگلیسی

Finite elements have been used recently to solve the optical flow conservation principle invoked to determine displacement fields by digital image correlation. Inspired by these recent advances, and by the computational effort that has been accomplished during the past 10 years for the simulation of discontinuities by the extended finite element method (XFEM), an extended correlation technique is introduced for capturing shear-band like discontinuities from images of real mechanical tests. Because of the specific information at hand (i.e., gray level images), this extended finite element approach is included in a non-linear multi-grid solver. The performances of the proposed approach are discussed on two examples, namely the analysis of a bolted assembly and the formation of Piobert–Lüders bands.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 196, Issues 49–52, 1 November 2007, Pages 5016–5030
نویسندگان
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