کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
514189 866708 2009 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on the influence of measurement location and regularization on the evaluation of boundary tractions by inverse finite element method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A study on the influence of measurement location and regularization on the evaluation of boundary tractions by inverse finite element method
چکیده انگلیسی

This work is concerned with an inverse approach to determine boundary tractions from displacements measured on a remote surface. The influence of measurement location and regularization on the evaluation of unknown tractions is mainly investigated through numerical experiments. The finite element method is employed in the inversion process, and the Tikhonov and the truncated singular value decomposition techniques are used to regularize an ill-conditioned system. The analytical relation between measurement location and the conditioning of a spring inverse problem is presented in this paper. Numerical results show that the solutions of inverse problems using the finite element method are very sensitive to measurement location. In addition, the effects of regularization and noise added to measured displacements are discussed through numerical examples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Finite Elements in Analysis and Design - Volume 45, Issues 8–9, June–July 2009, Pages 569–582
نویسندگان
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