کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
807576 905559 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Damage growth by debonding in a single fibre metal matrix composite: Elastoplasticity and strain energy density criterion
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Damage growth by debonding in a single fibre metal matrix composite: Elastoplasticity and strain energy density criterion
چکیده انگلیسی

A displacement-based finite element-based numerical approach has been employed to study the damage growth in a unidirectional SiC/Al composite containing a pre-existing crack along the fibre/matrix interface. The composite is modeled as a two-material cylinder subjected to uniform displacement. A detailed analysis is made for the stress field in the vicinity of the debond crack tip. This approach incorporates an elastic–plastic analysis combined with a strain energy density criterion to predict debonded crack growth direction, extended stable growth and final termination. The influence of contact taking place between the debonded surfaces is also considered. It is shown that such surface contact leads to reduced stress and strain fields around the crack tip, while the extent of reduction is increased with debonding length. By combining the reduced stress field with the strain energy density criterion, a limiting value for the debonding extension can be calculated for the critical applied displacement that led to fibre fracture.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 53, Issue 2, April 2010, Pages 152–157
نویسندگان
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