کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1563817 999621 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Finite element analysis of a center crack specimen warm pre-stressed under different modes of loading
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Finite element analysis of a center crack specimen warm pre-stressed under different modes of loading
چکیده انگلیسی

Load bearing capacity of cracked specimens can be improved following pre-loading procedures like warm pre-stressing (WPS). In this paper, the effects of modes I and II pre-loading on fracture load of a central angled crack specimen are studied by finite element analysis. The specimen is reloaded either in mode I or in mode II. To predict the fracture load of cracked specimen after pre-loading, the maximum tensile stress (MTS) and maximum shear stress (MSS) criteria are used. It is shown that mode II fracture load is independent of pre-loading but the mode I fracture load is highly improved after warm pre-stressing. The mode mixity of the specimen is also changed when the pre-loading and reloading modes are not identical. An increase in the fracture load of the specimen following pre-loading may be due to change of failure mode as predicted by finite element analysis in this work.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 38, Issue 4, February 2007, Pages 847–856
نویسندگان
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