کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
512706 866422 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-dimensional extended displacement discontinuity method for vertical cracks in transversely isotropic piezoelectric media
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Three-dimensional extended displacement discontinuity method for vertical cracks in transversely isotropic piezoelectric media
چکیده انگلیسی

The conventional displacement discontinuity method is extended to study a vertical crack under electrically impermeable condition, running parallel to the poling direction and normal to the plane of isotropy in three-dimensional transversely isotropic piezoelectric media. The extended Green's functions specifically for extended point displacement discontinuities are derived based on the Green's functions of extended point forces and the Somigliana identity. The hyper-singular displacement discontinuity boundary integral equations are also derived. The asymptotical behavior near the crack tips along the crack front is studied and the ordinary 1/2 singularity is obtained at the tips. The extended field intensity factors are expressed in terms of the extended displacement discontinuity on crack faces. Numerical results on the extended field intensity factors for a vertical square crack are presented using the proposed extended displacement discontinuity method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Analysis with Boundary Elements - Volume 36, Issue 9, September 2012, Pages 1406–1415
نویسندگان
, , , ,