کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5019713 1468310 2017 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Generalization of mixed mode crack behaviour by the plastic stress intensity factor
ترجمه فارسی عنوان
تعمیم رفتار رفت و برگشت ترک مخلوط با شدت تنش پلاستیکی
کلمات کلیدی
حالت مخلوط، استرس سه گانه، تراکم انرژی، فاکتور شدت تنش پلاستیکی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
An elastic-plastic finite element analysis is performed for cruciform specimens of two configurations and a compact tension-shear specimen subjected to mixed Mode I/II loading. A Ramberg-Osgood stress-strain relation is used to characterise the properties of two types of steel and titanium and aluminium alloys. For the specified geometry of the specimen considered, the governing parameter of the elastic-plastic crack-tip stress field In factor, the stress triaxiality, and the plastic stress intensity factor are determined as a function of mode mixity and elastic-plastic material properties. Special emphasis is put on the analysis of the effect of specimen geometry. Analytical and numerical results are compared for the complete range of mixed-mode loading. A correlation between the plastic stress intensity factor and the constraint parameter based on the numerical analysis is found. Coupling between mode mixity and material nonlinearity is indicated. The applicability of the plastic stress intensity factor approach to large-scale yielding analysis is also discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 91, October 2017, Pages 52-65
نویسندگان
, ,