Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion Method
A new method based on the second-order Taylor-series expansion is presented to identify the structural dynamic loads in the time domain. This algorithm expresses the response vectors as Taylor-series approximation and then a series of formulas are deduced. As a result, an explicit discrete equation...
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/6461427 |
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| _version_ | 1849684853777235968 |
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| author | Xiaowang Li Zhongmin Deng |
| author_facet | Xiaowang Li Zhongmin Deng |
| author_sort | Xiaowang Li |
| collection | DOAJ |
| description | A new method based on the second-order Taylor-series expansion is presented to identify the structural dynamic loads in the time domain. This algorithm expresses the response vectors as Taylor-series approximation and then a series of formulas are deduced. As a result, an explicit discrete equation which associates system response, system characteristic, and input excitation together is set up. In a multi-input-multi-output (MIMO) numerical simulation study, sinusoidal excitation and white noise excitation are applied on a cantilever beam, respectively, to illustrate the effectiveness of this algorithm. One also makes a comparison between the new method and conventional state space method. The results show that the proposed method can obtain a more accurate identified force time history whether the responses are polluted by noise or not. |
| format | Article |
| id | doaj-art-c6917ee517fe4e8d8ddbf2f7ca9dfd5d |
| institution | DOAJ |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c6917ee517fe4e8d8ddbf2f7ca9dfd5d2025-08-20T03:23:19ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/64614276461427Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion MethodXiaowang Li0Zhongmin Deng1School of Astronautics, Beihang University, 37 XueYuan Road, Haidian District, Beijing 100191, ChinaSchool of Astronautics, Beihang University, Beijing 100191, ChinaA new method based on the second-order Taylor-series expansion is presented to identify the structural dynamic loads in the time domain. This algorithm expresses the response vectors as Taylor-series approximation and then a series of formulas are deduced. As a result, an explicit discrete equation which associates system response, system characteristic, and input excitation together is set up. In a multi-input-multi-output (MIMO) numerical simulation study, sinusoidal excitation and white noise excitation are applied on a cantilever beam, respectively, to illustrate the effectiveness of this algorithm. One also makes a comparison between the new method and conventional state space method. The results show that the proposed method can obtain a more accurate identified force time history whether the responses are polluted by noise or not.http://dx.doi.org/10.1155/2016/6461427 |
| spellingShingle | Xiaowang Li Zhongmin Deng Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion Method Shock and Vibration |
| title | Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion Method |
| title_full | Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion Method |
| title_fullStr | Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion Method |
| title_full_unstemmed | Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion Method |
| title_short | Identification of Dynamic Loads Based on Second-Order Taylor-Series Expansion Method |
| title_sort | identification of dynamic loads based on second order taylor series expansion method |
| url | http://dx.doi.org/10.1155/2016/6461427 |
| work_keys_str_mv | AT xiaowangli identificationofdynamicloadsbasedonsecondordertaylorseriesexpansionmethod AT zhongmindeng identificationofdynamicloadsbasedonsecondordertaylorseriesexpansionmethod |