کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5016371 | 1464967 | 2016 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantifying the creep crack-tip constraint effects using a load-independent constraint parameter Q*
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Quantifying the creep crack-tip constraint effects using a load-independent constraint parameter Q* Quantifying the creep crack-tip constraint effects using a load-independent constraint parameter Q*](/preview/png/5016371.png)
چکیده انگلیسی
In this work, a load-independent creep constraint parameter Q* was introduced, and its load-independence was confirmed by 3D finite element analyses of six different cracked specimens. A fixed distance r=0.2 mm ahead of crack tips was chosen to define the Q*. In addition, the parameter Q* was used to quantify the in-plane constraint induced by crack depths, specimen widths and loading configurations and the constraint effects induced by specimen thicknesses. The results revealed that the values of Q* increased with increasing the crack depths (a/W â¤0.5) and specimen thicknesses and decreased with increasing the width-thickness ratio W/B of specimens. Furthermore, the highest constraint level occurred in the CT specimen while the lowest occurred in the CCT specimen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mechanical Sciences - Volume 119, December 2016, Pages 320-332
Journal: International Journal of Mechanical Sciences - Volume 119, December 2016, Pages 320-332
نویسندگان
Lianyong Xu, Xingfu Zhang, Lei Zhao, Yongdian Han, Hongyang Jing,