Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic Excitation
In situ dynamic testing is conducted to study the dynamic characteristics of the wooden structure of the North House main hall. The velocity response signals on the measurement points are obtained and analyzed using the self-interaction spectral method and stochastic subspace method, yielding natura...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
|
| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/14/11/3527 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850145625308397568 |
|---|---|
| author | Xin Wang Zhaobo Meng Xiangming Lv Guoqiang Wei |
| author_facet | Xin Wang Zhaobo Meng Xiangming Lv Guoqiang Wei |
| author_sort | Xin Wang |
| collection | DOAJ |
| description | In situ dynamic testing is conducted to study the dynamic characteristics of the wooden structure of the North House main hall. The velocity response signals on the measurement points are obtained and analyzed using the self-interaction spectral method and stochastic subspace method, yielding natural frequencies, mode shapes, and damping ratios. This study reveals that the natural frequencies and damping ratios are highly consistent between the two methods. Therefore, to eliminate errors, the average of the results from both modal identification methods is taken as the final measured modal parameters of the structure. The natural frequencies of the first and second order in the X direction were 2.097 Hz and 3.845 Hz and in the Y direction were 3.955 Hz and 5.701 Hz. The modal frequency in the Y direction of the structure exceeds that in the X direction. Concurrently, a three-dimensional finite element model was established using ANSYS 2021R1, considering the semi-rigid properties of mortise–tenon connections, and validated based on in situ dynamic testing. The sensitivity analysis indicates adjustments to parameters such as beam–column elastic modulus, tenon–mortise joint stiffness, and roof mass for finite element model refinement. Modal parameter calculations from the corrected finite element model closely approximate the measured modal results, with maximum errors of 9.41% for the first two frequencies, both within 10% of the measured resonant frequencies. The adjusted finite element model closely matches the experimental results, serving as a benchmark model for the wooden structure of North House main hall. The validation confirms the rationality of the benchmark finite element model, providing valuable insights into ancient timber structures along transportation routes. |
| format | Article |
| id | doaj-art-16fe9c00daad4599b60f7310d7a5ad2e |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-16fe9c00daad4599b60f7310d7a5ad2e2025-08-20T02:28:03ZengMDPI AGBuildings2075-53092024-11-011411352710.3390/buildings14113527Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic ExcitationXin Wang0Zhaobo Meng1Xiangming Lv2Guoqiang Wei3School of Civil Engineering, Tianshui Normal University, Tianshui 741001, ChinaSchool of Architecture & Civil Engineering, Liaocheng University, Liaocheng 252000, ChinaSchool of Civil Engineering, Tianshui Normal University, Tianshui 741001, ChinaSchool of Civil Engineering, Tianshui Normal University, Tianshui 741001, ChinaIn situ dynamic testing is conducted to study the dynamic characteristics of the wooden structure of the North House main hall. The velocity response signals on the measurement points are obtained and analyzed using the self-interaction spectral method and stochastic subspace method, yielding natural frequencies, mode shapes, and damping ratios. This study reveals that the natural frequencies and damping ratios are highly consistent between the two methods. Therefore, to eliminate errors, the average of the results from both modal identification methods is taken as the final measured modal parameters of the structure. The natural frequencies of the first and second order in the X direction were 2.097 Hz and 3.845 Hz and in the Y direction were 3.955 Hz and 5.701 Hz. The modal frequency in the Y direction of the structure exceeds that in the X direction. Concurrently, a three-dimensional finite element model was established using ANSYS 2021R1, considering the semi-rigid properties of mortise–tenon connections, and validated based on in situ dynamic testing. The sensitivity analysis indicates adjustments to parameters such as beam–column elastic modulus, tenon–mortise joint stiffness, and roof mass for finite element model refinement. Modal parameter calculations from the corrected finite element model closely approximate the measured modal results, with maximum errors of 9.41% for the first two frequencies, both within 10% of the measured resonant frequencies. The adjusted finite element model closely matches the experimental results, serving as a benchmark model for the wooden structure of North House main hall. The validation confirms the rationality of the benchmark finite element model, providing valuable insights into ancient timber structures along transportation routes.https://www.mdpi.com/2075-5309/14/11/3527traffic excitationancient wooden structuredynamic testingmodal parameterfinite element model |
| spellingShingle | Xin Wang Zhaobo Meng Xiangming Lv Guoqiang Wei Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic Excitation Buildings traffic excitation ancient wooden structure dynamic testing modal parameter finite element model |
| title | Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic Excitation |
| title_full | Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic Excitation |
| title_fullStr | Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic Excitation |
| title_full_unstemmed | Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic Excitation |
| title_short | Dynamic Testing and Finite Element Model Adjustment of the Ancient Wooden Structure Under Traffic Excitation |
| title_sort | dynamic testing and finite element model adjustment of the ancient wooden structure under traffic excitation |
| topic | traffic excitation ancient wooden structure dynamic testing modal parameter finite element model |
| url | https://www.mdpi.com/2075-5309/14/11/3527 |
| work_keys_str_mv | AT xinwang dynamictestingandfiniteelementmodeladjustmentoftheancientwoodenstructureundertrafficexcitation AT zhaobomeng dynamictestingandfiniteelementmodeladjustmentoftheancientwoodenstructureundertrafficexcitation AT xiangminglv dynamictestingandfiniteelementmodeladjustmentoftheancientwoodenstructureundertrafficexcitation AT guoqiangwei dynamictestingandfiniteelementmodeladjustmentoftheancientwoodenstructureundertrafficexcitation |