A Comparative Study of Regularization Method in Structure Load Identification
This study aims to correlate the vibration data with quantitative indicators of structural health by comparing and validating the feasibility of identifying unknown excitation forces using output vibration responses. First, numerical analysis was performed to investigate the accuracy, convergence, a...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/9204865 |
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| _version_ | 1832556888721457152 |
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| author | Bingrong Miao Feng Zhou Chuanying Jiang Xiangyu Chen Shuwang Yang |
| author_facet | Bingrong Miao Feng Zhou Chuanying Jiang Xiangyu Chen Shuwang Yang |
| author_sort | Bingrong Miao |
| collection | DOAJ |
| description | This study aims to correlate the vibration data with quantitative indicators of structural health by comparing and validating the feasibility of identifying unknown excitation forces using output vibration responses. First, numerical analysis was performed to investigate the accuracy, convergence, and robustness of the load identification results for different noise levels, sensors numbers, and initial estimates of structural parameters. Then, the laboratory beam structure experiments were conducted. The results show that using the two identification methods Tikhonov (L-curve) and TSVD (GCV-curve) can successfully and accurately identify the different excitation forces of the external hammer. The TSVD based on GCV method has more advantages than the Tikhonov based on L-curve method. The proposed two kinds of load identification procedure based on vibration response can be applied to the safety performance evaluation of the railway track structure in future inverse problems research. |
| format | Article |
| id | doaj-art-58992d454eec4edbab816eaf59a6a759 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-58992d454eec4edbab816eaf59a6a7592025-02-03T05:44:05ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/92048659204865A Comparative Study of Regularization Method in Structure Load IdentificationBingrong Miao0Feng Zhou1Chuanying Jiang2Xiangyu Chen3Shuwang Yang4State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, ChinaState Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, ChinaState Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, ChinaState Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, ChinaState Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, ChinaThis study aims to correlate the vibration data with quantitative indicators of structural health by comparing and validating the feasibility of identifying unknown excitation forces using output vibration responses. First, numerical analysis was performed to investigate the accuracy, convergence, and robustness of the load identification results for different noise levels, sensors numbers, and initial estimates of structural parameters. Then, the laboratory beam structure experiments were conducted. The results show that using the two identification methods Tikhonov (L-curve) and TSVD (GCV-curve) can successfully and accurately identify the different excitation forces of the external hammer. The TSVD based on GCV method has more advantages than the Tikhonov based on L-curve method. The proposed two kinds of load identification procedure based on vibration response can be applied to the safety performance evaluation of the railway track structure in future inverse problems research.http://dx.doi.org/10.1155/2018/9204865 |
| spellingShingle | Bingrong Miao Feng Zhou Chuanying Jiang Xiangyu Chen Shuwang Yang A Comparative Study of Regularization Method in Structure Load Identification Shock and Vibration |
| title | A Comparative Study of Regularization Method in Structure Load Identification |
| title_full | A Comparative Study of Regularization Method in Structure Load Identification |
| title_fullStr | A Comparative Study of Regularization Method in Structure Load Identification |
| title_full_unstemmed | A Comparative Study of Regularization Method in Structure Load Identification |
| title_short | A Comparative Study of Regularization Method in Structure Load Identification |
| title_sort | comparative study of regularization method in structure load identification |
| url | http://dx.doi.org/10.1155/2018/9204865 |
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