کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5019750 | 1468311 | 2017 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relationship between strain rate concentration factor and stress concentration factor
ترجمه فارسی عنوان
رابطه بین ضریب غلظت میزان فشار و ضریب تمرکز استرس
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کلمات کلیدی
شکستگی شکاف تست کشش سرعت بالا، قدرت ضربه، فاکتور غلظت نرخ تنش، عامل غلظت استرس،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
In this study, the strain rate concentration is considered for high speed tensile test, which is now being recognized as a standard testing method. To evaluate the impact strength of engineering materials under high impact speed, Izod and Charpy tests are unsuitable since they cannot control the impact speeds and therefore do not coincide with the real failure of real products. For smooth specimens, the strain rate can be determined from the tensile speed u/t and specimen length l as εÌsmooth=u/tl. For notched specimens, however, the strain rate at the notch root εÌnotch should be analyzed accurately. In this study, therefore, the strain rate concentration factor defined as KtεÌ=εÌnotch/εÌsmooth is studied with varying the notch geometry and specimen length. It is found that the strain concentration factor KtÎµÌ can be estimated from stress concentration factor Ktâ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 90, August 2017, Pages 218-227
Journal: Theoretical and Applied Fracture Mechanics - Volume 90, August 2017, Pages 218-227
نویسندگان
Nao-Aki Noda, Yunong Shen, Rei Takaki, Daichi Akagi, Tomohiro Ikeda, Yoshikazu Sano, Yasushi Takase,