Real-Time Shape Sensing of Composite and Sandwich Structures by Coupling Inverse Finite-Element Method with Refined Zigzag Theory
Publication: Journal of Engineering Mechanics
Volume 149, Issue 9
Abstract
It is greatly significant for structural safety in service to real-time adjust the structural posture. The prerequisite for this purpose is to monitor in real time the deformation displacements. To solve the problem, this study proposes an improved inverse finite-element method (iFEM) for reconstructing the deformation by using discrete strain measurement data. The technology is also known as shape sensing, which presents robust and efficient computational characteristics. This paper proposes an improved iFEM method for composite and sandwich closed-section beams, which employs the iFEM methodology as a general framework and the refined zigzag theory (RZT) as the underlying beam theory to establish the shape-sensing model. The main advantages of the proposed formulation are that the reconstruction model can not only avoid shear strain measurement problems, but also eliminate the influence of the shear correction factors on reconstruction accuracy. The proposed algorithm is implemented in a cantilever three-layered composite beam subjected to two loads. The numerical results demonstrate the superior capability and potential applicability of the proposed improved shape-sensing methodology for monitoring accurate displacement and stress field of laminated composite beam structures.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 149 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Nov 30, 2022
Accepted: May 5, 2023
Published online: Jul 13, 2023
Published in print: Sep 1, 2023
Discussion open until: Dec 13, 2023
ASCE Technical Topics:
- Beams
- Composite beams
- Composite structures
- Continuum mechanics
- Deformation (mechanics)
- Design (by type)
- Displacement (mechanics)
- Engineering fundamentals
- Engineering mechanics
- Finite element method
- Material mechanics
- Materials engineering
- Measurement (by type)
- Methodology (by type)
- Numerical methods
- Sensors and sensing
- Solid mechanics
- Strain
- Structural design
- Structural engineering
- Structural mechanics
- Structural members
- Structural safety
- Structural systems
- Structures (by type)
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