Shape sensing of beam-like structures using the robust iFEM-iQS4 inverse shell element

Abdollahzadeh, Mohammad Amin and Belur, Muhammed Yavuz and Basoglu, Muhammed Fatih and Kefal, Adnan (2023) Shape sensing of beam-like structures using the robust iFEM-iQS4 inverse shell element. IEEE Transactions on Instrumentation and Measurement, 72 . ISSN 0018-9456 (Print) 1557-9662 (Online)

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The reconstruction of 2D/3D deformation and stress fields using a limited number of strain sensors is called “shape sensing” and plays an important role among structural health monitoring (SHM) methods. The inverse finite element method (iFEM) is one of the best shape sensing algorithms developed based on strain data from a set of on-board/embedded sensors. The iFEM accomplishes this task by minimizing the errors between these collected (experimental/simulated) strains and the calculated (analytical) strains using a weighted least squares function. In the present study, we attempt to verify the applicability of a quadrilateral iFEM plate/shell element, iFEM-iQS4, for shape sensing of 2D beam-like structures by comparing it with a recently developed inverse beam element iFEM-iBeam3. We also demonstrate the high efficiency and accuracy of iFEM-iQS4 analysis for 3D shape sensing of beam-like structures with different cross sections. Finally, the accuracy of the numerical examples is validated by an experimental test.
Item Type: Article
Uncontrolled Keywords: Beam-like structures; Capacitive sensors; Deformation; Finite element analysis; inverse finite element method; Sensors; Shape; shape sensing; Strain; Stress; structural health monitoring
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Adnan Kefal
Date Deposited: 11 Sep 2023 14:34
Last Modified: 11 Sep 2023 14:34

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