کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11027835 | 1666152 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The admissible range of notch root radius for applying the singular stress field to its fracture analysis
ترجمه فارسی عنوان
محدوده مجاز شعاع ریشه پیک برای اعمال تنش منحصر به فرد به تجزیه و تحلیل شکست آن
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
In this study, the problem of “what is the critical value of notch root radius Ïmax below which the fracture load of the notch with Ïâ 0 can be evaluated by using the singular stress field for a sharp notch” is investigated analytically. Based on the existing fracture criteria, the ultimate loading stresses Ïf and ÏF are respectively calculated by using numerical analysis called body force method for the blunt notch and by using the singular stress field for the corresponding sharp notch. By comparing Ïf with ÏF, the admissible maximum notch root radius Ïmax is investigated. Based on the investigation, it is found that when the notch root radius Ï is approximately 0.4 times smaller than d0mâ¯=â¯2/Ï(KIC/ÏC)2, the predictive error of the fracture load for the blunt notch(Ïâ 0) by using the singular stress field for sharp notch (Ï=0) could be within ±5%. Here, the notch depth should be taken as large as t>4d0m.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 202, 15 October 2018, Pages 202-213
Journal: Engineering Fracture Mechanics - Volume 202, 15 October 2018, Pages 202-213
نویسندگان
D.H. Chen, L. Chen,