کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11003890 | 1463174 | 2019 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On propagation of time-harmonic elastic waves through a double-periodic array of penny-shaped cracks
ترجمه فارسی عنوان
در مورد انتشار امواج الاستیک هماهنگی از طریق آرایه دو دوره ای از ترکهای پنی شکل
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کلمات کلیدی
دوره ای پراکندهای شکل، انعکاس و انتقال موج الاستیک روش معادلات انتگرال مرزی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
Improved boundary integral equation method for the investigation of time-harmonic longitudinal elastic wave penetration through a plane of penny-shaped cracks with a periodic square or rectangular lattice in 3D infinite elastic solid is proposed. Under the assumption of normal incidence of wave, the corresponding symmetric wave scattering problem is reduced to a boundary integral equation for the displacement jump across the crack-surfaces in a unit-cell by means of a 3D double-periodic Green's function in terms of the exponentially convergent Fourier integrals. A regularization technique for this Green's function involving special lattice sums in closed forms is adopted, which allows its effective calculation in a wide range of wave numbers. A collocation method is used for the solution of boundary integral equation. The reflected and transmitted far-field displacements are shown to be a superposition of a finite number of propagating wave modes and expressed by the obtained solution. The crack-opening-displacements, wave reflection and transmission coefficients in dependence on the wave number, lattice and crack sizes are computed and analyzed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - A/Solids - Volume 73, JanuaryâFebruary 2019, Pages 306-317
Journal: European Journal of Mechanics - A/Solids - Volume 73, JanuaryâFebruary 2019, Pages 306-317
نویسندگان
V.V. Mykhas'kiv, I. Ya Zhbadynskyi, Ch Zhang,