کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11004114 | 1468304 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A three-dimensional long-term strength criterion of rocks based on micromechanical method
ترجمه فارسی عنوان
معیار سهبعدی مقاومت طولانی مدت سنگها بر اساس روش میکرومکانیکی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
Rock-like materials are driven not only by applied stresses, but also by time that exhibits creep characteristics. It is significant to establish three-dimensional long-term strength criterion of rocks. In this paper, it is assumed that there exist three-dimensional penny-shaped microcracks in viscoelastic rock matrix. The mode II and mode III stress intensity factors at tips of three-dimensional penny-shaped microcracks in viscoelastic rock matrix are determined. The orientation angle of micro-failure in rock materials is obtained to describe the creep failure of rocks. The relationship between the micro-failure orientation angle and stress components is derived from the creep fracture criterion. Failure characteristic parameters of penny-shaped microcracks under triaxial creep compressive condition are defined, which are an invariant. A three-dimensional long-term strength criterion of rocks is established using micromechanical method, in which the effects of the intermediate principal stress are taken into account. The proposed three-dimensional long-term strength criterion is novel, and never published before. By comparison with the previous experimental data, it is found that the presented three-dimensional long-term strength criterion is in good agreement with the experimental data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 97, October 2018, Pages 409-418
Journal: Theoretical and Applied Fracture Mechanics - Volume 97, October 2018, Pages 409-418
نویسندگان
Xiao-Ping Zhou, Xiao-Cheng Huang, Filippo Berto,