کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4922661 1430194 2016 45 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Maximum mean principal stress criterion for three-dimensional brittle fracture
ترجمه فارسی عنوان
حداکثر معیار اصلی استرس اصلی برای شکست شکن سه بعدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Cracks encountered in engineering structures are typically three dimensional, and the fracture mechanism remains unclear because of the superimposed stresses induced by mixed-mode I/II/III loading. This paper introduces a general 3D mixed-mode fracture criterion based on the maximum mean principal stress (MMPS) by introducing the concept of a characteristic fracture length that is related to the material tensile strength. This criterion has clear physical significance, a systematic mathematical expression and a wide scope of applications to estimate both the in- and out-of-plane fracture angles and fracture strength. The proposed criterion is validated for all mixed-mode conditions (I/II, I/III and II/III) and is compared with several widely used criteria based on experimental results reported in previous studies. Good agreement is achieved in terms of the fracture angles and, in particular, the fracture strength between the results predicted by the new criterion and the experimental results of various brittle materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 102–103, 15 December 2016, Pages 142-154
نویسندگان
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