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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
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چکیده انگلیسی
⺠Non-iterative global qualitative crack identification approach exploiting transient elastodynamic data, based on the concept of topological derivative, is proposed. ⺠Topological derivative of a broad class of cost functionals established using 3D small-crack asymptotics in a transient elastodynamic framework. ⺠Easy implementation within a classical FEM platform: simplicity and efficiency (once the correct expression of the topological derivative, established in this article, is available). ⺠Computationally efficient adjoint-based formulation. ⺠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
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 253, 1 January 2013, Pages 89-105
نویسندگان
Cédric Bellis, Marc Bonnet,