کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6918342 862982 2013 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Qualitative identification of cracks using 3D transient elastodynamic topological derivative: Formulation and FE implementation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Qualitative identification of cracks using 3D transient elastodynamic topological derivative: Formulation and FE implementation
چکیده انگلیسی
► Non-iterative global qualitative crack identification approach exploiting transient elastodynamic data, based on the concept of topological derivative, is proposed. ► Topological derivative of a broad class of cost functionals established using 3D small-crack asymptotics in a transient elastodynamic framework. ► Easy implementation within a classical FEM platform: simplicity and efficiency (once the correct expression of the topological derivative, established in this article, is available). ► Computationally efficient adjoint-based formulation. ► Demonstrated on 3D numerical experiments: cracks are correctly located, and they orientation is also estimated by pointwise optimization of TD summing up: a mathematical asymptotic analysis (small-crack expansion) yielding crack identification methodology that is easy to implement and use by engineers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 253, 1 January 2013, Pages 89-105
نویسندگان
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