Analysis and Damage Identification of a Moderately Thick Cracked Beam Using an Interdependent Locking-Free Element

被引：0
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作者：
Marco Pingaro
Giacomo Maurelli
Paolo Venini
机构：
[1] Sapienza University of Rome,
[2] University of Pavia,undefined
来源：
Journal of Optimization Theory and Applications | 2020年 / 187卷
关键词：
Interdependent interpolation element; Damage parameters; Direct problem; Inverse problem; Numerical optimization; 49J53; 49K99; 49K35;
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学科分类号：
摘要：
The Timoshenko interdependent interpolation element, based on the assumption of cubic interpolation for the transverse displacement and quadratic interpolation for the rotation, is developed for both the static and the dynamic problems. Next, the different behavior of a beam due to the presence of a damaged zone is investigated and the problem of identifying diffused crack affecting a portion of the beam using natural frequencies is studied. The damaged zone can be completely taken into account by introducing only three parameters, and for the inverse problem, numerical optimization is applied to define their values.
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页码：800 / 821
页数：21
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