کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6748703 | 1430217 | 2015 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Localization study of a regularized variational damage model
ترجمه فارسی عنوان
مطالعه محلی سازی یک مدل آسیب تغییرات قانونی
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کلمات کلیدی
خسارت، شکست، جدایی، غیر محلی، رویکرد متغیر، دوختن،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The paper presents a detailed analysis and extended formulation of a rate-independent regularized damage model proposed by Mielke and RoubÃÄek (2006). Localization properties are studied in the context of a simple one-dimensional problem, but the results reveal the fundamental features of the basic model and of its modified versions. The initial bifurcation from a uniform solution is described analytically while the complete failure process is studied numerically. Modifications of the regularizing term and of the dissipation distance are introduced and their effect on the global response is investigated. It is shown that, with a proper combination of model parameters, a realistic shape of the load-displacement diagram can be achieved and pathological effects such as extremely brittle response or expansion of the damage zone accompanied by stress locking can be eliminated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 69â70, September 2015, Pages 131-151
Journal: International Journal of Solids and Structures - Volumes 69â70, September 2015, Pages 131-151
نویسندگان
Milan Jirásek, Jan Zeman,