کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1564345 1513958 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elastodynamic response of a cracked orthotropic medium under impact loading
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Elastodynamic response of a cracked orthotropic medium under impact loading
چکیده انگلیسی
In this paper the problem of elastodynamic response of an infinite orthotropic medium containing a central crack under normal impact loading is considered. Laplace and Fourier integral transforms are employed to reduce the dimensional wave propagation problem to the solution of a pair of dual integral equations in the Laplace transform plane. These integral equations are then reduced to integro-differential equations which have been solved in the low frequency domain by method of iteration. To determine time dependence, these equations are inverted to yield the dynamic stress intensity factor (SIF) for normal point force loading. Numerical results of normalized SIF for large normalized time variable and for different concentrated point force loading at arbitrary location of the crack surface have been calculated for graphite-epoxy composite material. In the present paper the method of [A. Papoulis, The method of inversion of Laplace transform, Quart. Appl. Math. 14 (1957) 405-414] is used for the inversion of the Laplace transform. Finally the results obtained are displayed graphically.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 37, Issues 1–2, August 2006, Pages 187-192
نویسندگان
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