Affiliation:
1. Center for Computational Fluid Dynamics George Mason University Fairfax Virginia USA
2. Center for Mathematics and Artificial Intelligence George Mason University Fairfax Virginia USA
3. Institute for Structural Analysis TU Braunschweig Braunschweig Germany
Abstract
AbstractAn adjoint‐based procedure to determine weaknesses, or, more generally, the material properties of structures is developed and tested. Given a series of load cases and corresponding displacement/strain measurements, the material properties are obtained by minimizing the weighted differences between the measured and computed values. The present paper proposes and tests techniques to minimize the number of load cases and sensors. Several examples show the viability, accuracy and efficiency of the proposed methodology and its potential use for high fidelity digital twins.
Funder
National Science Foundation
Air Force Office of Scientific Research
Office of Naval Research
Reference31 articles.
1. American Institute of Aeronautics and Astronautics (AIAA) Digital Engineering Integration Committee.Digital twin: definition & value. AIAA and AIA Position Paper; 2020.https://www.aiaa.org/docs/default‐source/uploadedfiles/issues‐and‐advocacy/policy‐papers/digital‐twin‐institute‐position‐paper‐(december‐2020).pdf
2. The location of defects in structures from measurements of natural frequencies
3. Updating of finite element models using vibration tests
4. Damage detection of structures by wavelet analysis