کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
824816 1469985 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Propagation of surface SH waves on a half space covered by a nonlinear thin layer
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Propagation of surface SH waves on a half space covered by a nonlinear thin layer
چکیده انگلیسی

The self modulation of surface shear horizontal (SH) waves (Love waves) propagating on a nonlinear half space covered by a nonlinear thin layer is examined. First a nonlinear thin layer approximation is derived by assuming that constituent materials are nonlinear,homogeneous, isotropic and compressible hyper-elastic. Then employing this approximation, a two medium problem is reduced to one for a nonlinear half space with a modified nonlinear boundary condition on the top surface. This new problem is analyzed by the method of multiple scales, and a nonlinear Schrödinger (NLS) equation is derived which describes the self modulation of the waves asymptotically. Then the results of the nonlinear thin layer approximation are compared with the results of the linear thin layer approximation and with the finite layer results obtained in a previous work. It has been observed that even in moderately low wave numbers, the propagation is affected considerably by the nonlinear material parameter of the layer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Engineering Science - Volume 85, December 2014, Pages 150–162
نویسندگان
, , ,