کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
753115 895497 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A moving crack in a nonhomogeneous material strip
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A moving crack in a nonhomogeneous material strip
چکیده انگلیسی

ABSTRACTThis paper considers an anti-plane moving crack in a nonhomogeneous material strip of finite thickness. The shear modulus and the mass density of the strip are considered for a class of functional forms for which the equilibrium equation has analytical solutions. The problem is solved by means of the singular integral equation technique. The stress field near the crack tip is obtained. The results are plotted to show the effect of the material non-homogeneity and crack moving velocity on the crack tip field. Crack bifurcation behaviour is also discussed. The paper points out that use of an appropriate fracture criterion is essential for studying the stability of a moving crack in nonhomogeneous materials. The prediction whether the unstable crack growth will be enhanced or retarded is strongly dependent on the type of the fracture criterion used. Based on the analysis, it seems that the maximum ‘anti-plane shear’ stress around the crack tip is a suitable failure criterion for moving cracks in nonhomogeneous materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Mechanica Solida Sinica - Volume 19, Issue 3, September 2006, Pages 223-230