کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9703985 | 1463871 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dislocation-based modelling of the growth of a microstructurally short crack by single shear due to fatigue loading
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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: Dislocation-based modelling of the growth of a microstructurally short crack by single shear due to fatigue loading Dislocation-based modelling of the growth of a microstructurally short crack by single shear due to fatigue loading](/preview/png/9703985.png)
چکیده انگلیسی
The growth of a short edge crack, located within one grain in a bcc crystal and subjected to cyclic loading, is modelled using a dislocation formulation. The external boundary including the crack itself is built from dislocation dipole elements and the plasticity is represented by discrete dislocations moving along preferred slip planes. The crack propagates by single shear due to emission and annihilation of dislocations, leading to a zigzag shaped crack path. The method allows simulation of the crack growth path, crack shape and the development of the plastic zone in detail. It is shown that the grain orientation, orientation of the activated slip systems, the load and the initial crack configuration all together determines the exact path.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 27, Issue 4, April 2005, Pages 347-356
Journal: International Journal of Fatigue - Volume 27, Issue 4, April 2005, Pages 347-356
نویسندگان
P. Hansson, S. Melin,