کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
802056 904340 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New stress intensity factor solutions of a periodic array of cracks in residual stress field
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
New stress intensity factor solutions of a periodic array of cracks in residual stress field
چکیده انگلیسی

Many important applications of crack mechanics involve self-equilibrating residual or thermal stress fields. For these types of problems, the traditional fracture mechanics approach based on the superposition principle has ignored the effect of crack surface contact when the crack-tip propagates into the residual compressive region. Contact between the crack faces and the wedging action are responsible for subsequent crack-tip reopening, which often leads to a much larger mode I stress intensity factor. In this study, an analytical approach is used to study the effect of crack face contact for a period array of collinear cracks embedded in several typical residual stress fields. It is found that the nonlinear contact between crack surfaces dominates the cracking behavior in residual/thermal stress fields, which is responsible for crack coalescence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics Research Communications - Volume 33, Issue 3, May–June 2006, Pages 425–432
نویسندگان
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