کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6956163 1451866 2015 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dealing with uncertainty in model updating for damage assessment: A review
ترجمه فارسی عنوان
کار با عدم اطمینان در به روز رسانی مدل برای ارزیابی آسیب: بررسی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
In structural engineering, model updating is often used for non-destructive damage assessment: by calibrating stiffness parameters of finite element models based on experimentally obtained (modal) data, structural damage can be identified, quantified and located. However, the model updating problem is an inverse problem prone to ill-posedness and ill-conditioning. This means the problem is extremely sensitive to small errors, which may potentially detract from the method׳s robustness and reliability. As many errors or uncertainties are present in model updating, both regarding the measurements as well as the employed numerical model, it is important to take these uncertainties suitably into account. This paper aims to provide an overview of the available approaches to this end, where two methods are treated in detail: a non-probabilistic fuzzy approach and a probabilistic Bayesian approach. These methods are both elaborated for the specific case of vibration-based finite element model updating for damage assessment purposes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volumes 56–57, May 2015, Pages 123-149
نویسندگان
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