کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9639694 | 1430413 | 2005 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efficient boundary element analysis of cracks in 2D piezoelectric structures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Efficient boundary element analysis of cracks in 2D piezoelectric structures Efficient boundary element analysis of cracks in 2D piezoelectric structures](/preview/png/9639694.png)
چکیده انگلیسی
This study deals with the computation of intensity factors for cracks in two-dimensional piezoelectric solids under static electromechanical loading. A direct collocation boundary element code with subdomain technique is developed, whereby the fundamental solutions are computed by a fast numerical algorithm applying Fourier series. Linear boundary conditions can be prescribed in a very general form in different coordinate systems. The discretization of the boundary contours is performed by quadratic isoparametric elements. Directly at the crack tips discontinuous quarter-point elements are used to model the typical behavior of the near tip solution with high accuracy, especially the 1/r-singularity of stresses and electric displacements. In order to demonstrate and to verify the accuracy of the method, the electromechanical Griffith crack is analysed under mixed mode loading (IÂ +Â IV and IIÂ +Â IV) situations. Furthermore the analysis of a crack in a bi-material composite of PZT/Epoxy resin is presented as a practical example and the analysis of a kinked crack as a non-straight crack example.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 42, Issue 8, April 2005, Pages 2399-2416
Journal: International Journal of Solids and Structures - Volume 42, Issue 8, April 2005, Pages 2399-2416
نویسندگان
Ulrich Groh, Meinhard Kuna,