Residual Mode Vector-Based Structural Damage Identification with First-Order Modal Information
Damage identification based on the change of dynamic properties is an issue worthy of attention in structure safety assessment, nevertheless, only a small number of discontinuous members in existing structure are damaged under service condition, and the most remaining members are in good condition....
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5526171 |
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| author | Shuai Luo Zhenxin Zhuang Wei Wang Ping Jiang |
| author_facet | Shuai Luo Zhenxin Zhuang Wei Wang Ping Jiang |
| author_sort | Shuai Luo |
| collection | DOAJ |
| description | Damage identification based on the change of dynamic properties is an issue worthy of attention in structure safety assessment, nevertheless, only a small number of discontinuous members in existing structure are damaged under service condition, and the most remaining members are in good condition. According to this feather, we developed an effective damage location and situation assessment algorithm based on residual mode vector with the first mode information of targeted structure, which utilized the quantitative relationship between first natural modes of global structure with the change of the element stiffness. Firstly, the element damage location is determined with exploitation of the sparseness of element stiffness matrices based on the discontinuity of damaged members. Then, according to the distribution characteristics of the corresponding residual mode vector, the nodal equilibrium equation about the damage parameter is established based on the residual mode vector, and the damage coefficients of structural elements are evaluated with the proposed equations. Two numerical examples are given to verify the proposed algorithm. The results showed that the proposed damage identification method is consistent with the preset damage. It can even accurately identify large-degree damages. The proposed algorithm only required the first-order modal information of the target structures and held few requirements of analysis resource; hence when compared with existing methods, it has obvious advantages for structural damage identification. |
| format | Article |
| id | doaj-art-3113be5fd8bd454dab1085c4c1b46b24 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-3113be5fd8bd454dab1085c4c1b46b242025-02-03T07:23:58ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/55261715526171Residual Mode Vector-Based Structural Damage Identification with First-Order Modal InformationShuai Luo0Zhenxin Zhuang1Wei Wang2Ping Jiang3School of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, ChinaDamage identification based on the change of dynamic properties is an issue worthy of attention in structure safety assessment, nevertheless, only a small number of discontinuous members in existing structure are damaged under service condition, and the most remaining members are in good condition. According to this feather, we developed an effective damage location and situation assessment algorithm based on residual mode vector with the first mode information of targeted structure, which utilized the quantitative relationship between first natural modes of global structure with the change of the element stiffness. Firstly, the element damage location is determined with exploitation of the sparseness of element stiffness matrices based on the discontinuity of damaged members. Then, according to the distribution characteristics of the corresponding residual mode vector, the nodal equilibrium equation about the damage parameter is established based on the residual mode vector, and the damage coefficients of structural elements are evaluated with the proposed equations. Two numerical examples are given to verify the proposed algorithm. The results showed that the proposed damage identification method is consistent with the preset damage. It can even accurately identify large-degree damages. The proposed algorithm only required the first-order modal information of the target structures and held few requirements of analysis resource; hence when compared with existing methods, it has obvious advantages for structural damage identification.http://dx.doi.org/10.1155/2021/5526171 |
| spellingShingle | Shuai Luo Zhenxin Zhuang Wei Wang Ping Jiang Residual Mode Vector-Based Structural Damage Identification with First-Order Modal Information Advances in Materials Science and Engineering |
| title | Residual Mode Vector-Based Structural Damage Identification with First-Order Modal Information |
| title_full | Residual Mode Vector-Based Structural Damage Identification with First-Order Modal Information |
| title_fullStr | Residual Mode Vector-Based Structural Damage Identification with First-Order Modal Information |
| title_full_unstemmed | Residual Mode Vector-Based Structural Damage Identification with First-Order Modal Information |
| title_short | Residual Mode Vector-Based Structural Damage Identification with First-Order Modal Information |
| title_sort | residual mode vector based structural damage identification with first order modal information |
| url | http://dx.doi.org/10.1155/2021/5526171 |
| work_keys_str_mv | AT shuailuo residualmodevectorbasedstructuraldamageidentificationwithfirstordermodalinformation AT zhenxinzhuang residualmodevectorbasedstructuraldamageidentificationwithfirstordermodalinformation AT weiwang residualmodevectorbasedstructuraldamageidentificationwithfirstordermodalinformation AT pingjiang residualmodevectorbasedstructuraldamageidentificationwithfirstordermodalinformation |