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A platform for research: civil engineering, architecture and urbanism
Operational Modal Analysis and Finite Element Model Updating of the Naillac Tower in Rhodes, Greece
https://orcid.org/https://orcid.org/0000-0003-2941-8956
https://orcid.org/https://orcid.org/0000-0001-5891-7987
Mitigating vulnerabilities of cultural heritage assets prevents damage from extreme weather, encourages sustainable restoration practices that cut carbon emissions, and yields long-term cost savings, all while conserving the legacy of historical constructions. Developing a precise numerical model that closely simulates the actual structure is a crucial component of a vulnerability assessment methodology. The objective of this study is to present a finite element (FE) model updating of a historical masonry arch with a corner tower in Rhodes, Greece. The Naillac tower, as part of the medieval city of Rhodes, is recognized as a UNESCO World Heritage site. Three-dimensional (3D) documentation was conducted using digital cameras, 3D laser scanners, drones, and total stations. These tools were chosen for their effectiveness in capturing the intricate architecture of the structure while expediting the documentation process. A 3D dense point cloud was generated, forming the basis for the subsequent development of a 3D FE model. On the other hand, operational modal analysis (OMA) was conducted based on the ambient vibration testing (AVT) data using accelerometer sensors to define the frequency values and corresponding mode shapes of the structure. The material properties of the FE model are calibrated to match the modal properties of the FE model with those recorded experimentally. Finally, the updated mechanical properties of the stone masonry for different parts of the structure were presented. Significant variations exist between the calibrated material properties and those assumed from empirical equations, underscoring the necessity for model calibration based on OMA.
Operational Modal Analysis and Finite Element Model Updating of the Naillac Tower in Rhodes, Greece
https://orcid.org/https://orcid.org/0000-0003-2941-8956
https://orcid.org/https://orcid.org/0000-0001-5891-7987
Mitigating vulnerabilities of cultural heritage assets prevents damage from extreme weather, encourages sustainable restoration practices that cut carbon emissions, and yields long-term cost savings, all while conserving the legacy of historical constructions. Developing a precise numerical model that closely simulates the actual structure is a crucial component of a vulnerability assessment methodology. The objective of this study is to present a finite element (FE) model updating of a historical masonry arch with a corner tower in Rhodes, Greece. The Naillac tower, as part of the medieval city of Rhodes, is recognized as a UNESCO World Heritage site. Three-dimensional (3D) documentation was conducted using digital cameras, 3D laser scanners, drones, and total stations. These tools were chosen for their effectiveness in capturing the intricate architecture of the structure while expediting the documentation process. A 3D dense point cloud was generated, forming the basis for the subsequent development of a 3D FE model. On the other hand, operational modal analysis (OMA) was conducted based on the ambient vibration testing (AVT) data using accelerometer sensors to define the frequency values and corresponding mode shapes of the structure. The material properties of the FE model are calibrated to match the modal properties of the FE model with those recorded experimentally. Finally, the updated mechanical properties of the stone masonry for different parts of the structure were presented. Significant variations exist between the calibrated material properties and those assumed from empirical equations, underscoring the necessity for model calibration based on OMA.
Operational Modal Analysis and Finite Element Model Updating of the Naillac Tower in Rhodes, Greece
https://orcid.org/https://orcid.org/0000-0003-2941-8956
https://orcid.org/https://orcid.org/0000-0001-5891-7987
Mitigating vulnerabilities of cultural heritage assets prevents damage from extreme weather, encourages sustainable restoration practices that cut carbon emissions, and yields long-term cost savings, all while conserving the legacy of historical constructions. Developing a precise numerical model that closely simulates the actual structure is a crucial component of a vulnerability assessment methodology. The objective of this study is to present a finite element (FE) model updating of a historical masonry arch with a corner tower in Rhodes, Greece. The Naillac tower, as part of the medieval city of Rhodes, is recognized as a UNESCO World Heritage site. Three-dimensional (3D) documentation was conducted using digital cameras, 3D laser scanners, drones, and total stations. These tools were chosen for their effectiveness in capturing the intricate architecture of the structure while expediting the documentation process. A 3D dense point cloud was generated, forming the basis for the subsequent development of a 3D FE model. On the other hand, operational modal analysis (OMA) was conducted based on the ambient vibration testing (AVT) data using accelerometer sensors to define the frequency values and corresponding mode shapes of the structure. The material properties of the FE model are calibrated to match the modal properties of the FE model with those recorded experimentally. Finally, the updated mechanical properties of the stone masonry for different parts of the structure were presented. Significant variations exist between the calibrated material properties and those assumed from empirical equations, underscoring the necessity for model calibration based on OMA.
Operational Modal Analysis and Finite Element Model Updating of the Naillac Tower in Rhodes, Greece
Lecture Notes in Civil Engineering
Kioumarsi, Mahdi (editor) / Shafei, Behrouz (editor) / Shabani, Amirhosein (author) / Karimi, Amir Hossein (author)
The International Conference on Net-Zero Civil Infrastructures: Innovations in Materials, Structures, and Management Practices (NTZR) ; 2024 ; Oslo, Norway
The 1st International Conference on Net-Zero Built Environment ; Chapter: 112 ; 1335-1345
2025-01-09
11 pages
Article/Chapter (Book)
Electronic Resource
English
Finite Element Model Updating with Modal Test Results
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Shape Updating of Finite Element Models Using Modal Analysis Data
| British Library Conference Proceedings | 2000