A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency
The additional damping ratio (ADR) is an important indicator for evaluating the damping effect of structures with energy-dissipation devices. Most existing methods for determining the ADR require an analysis of the structural dynamic response and complex iterative calculations. An innovative simplif...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/3172982 |
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| author | Weizhi Xu Dongsheng Du Shuguang Wang Weiwei Li |
| author_facet | Weizhi Xu Dongsheng Du Shuguang Wang Weiwei Li |
| author_sort | Weizhi Xu |
| collection | DOAJ |
| description | The additional damping ratio (ADR) is an important indicator for evaluating the damping effect of structures with energy-dissipation devices. Most existing methods for determining the ADR require an analysis of the structural dynamic response and complex iterative calculations. An innovative simplified calculation method for determining the ADR of a structure supplemented by nonlinear viscous dampers is proposed. This method does not require the dynamic response of the structure to be calculated and only requires the structural characteristics, excitation frequency, and damper parameters. In this study, several typical calculation methods for the ADR were analysed. Then, a calculation formula for the ADR was derived with consideration of harmonic excitation under the condition where the excitation frequency is equal to the structural natural frequency, without calculation of the structural dynamic response or an iterative process. The effect of the excitation frequency on the calculated value of the ADR with different damping exponents was studied. Accordingly, the response spectrum average period (RSAP) was considered as the excitation period of ground motion to evaluate the excitation frequency, and a simplified calculation method for the ADR considering the effect of the excitation frequency characterised by the RSAP of the ground motion was established. Finally, the accuracy and effectiveness of the proposed method were verified by comparison with ADRs calculated using other methods. |
| format | Article |
| id | doaj-art-109f04e8cbdc411a92fc9d5565feaf24 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-109f04e8cbdc411a92fc9d5565feaf242025-02-03T00:58:57ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/31729823172982A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation FrequencyWeizhi Xu0Dongsheng Du1Shuguang Wang2Weiwei Li3College of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaThe additional damping ratio (ADR) is an important indicator for evaluating the damping effect of structures with energy-dissipation devices. Most existing methods for determining the ADR require an analysis of the structural dynamic response and complex iterative calculations. An innovative simplified calculation method for determining the ADR of a structure supplemented by nonlinear viscous dampers is proposed. This method does not require the dynamic response of the structure to be calculated and only requires the structural characteristics, excitation frequency, and damper parameters. In this study, several typical calculation methods for the ADR were analysed. Then, a calculation formula for the ADR was derived with consideration of harmonic excitation under the condition where the excitation frequency is equal to the structural natural frequency, without calculation of the structural dynamic response or an iterative process. The effect of the excitation frequency on the calculated value of the ADR with different damping exponents was studied. Accordingly, the response spectrum average period (RSAP) was considered as the excitation period of ground motion to evaluate the excitation frequency, and a simplified calculation method for the ADR considering the effect of the excitation frequency characterised by the RSAP of the ground motion was established. Finally, the accuracy and effectiveness of the proposed method were verified by comparison with ADRs calculated using other methods.http://dx.doi.org/10.1155/2020/3172982 |
| spellingShingle | Weizhi Xu Dongsheng Du Shuguang Wang Weiwei Li A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency Advances in Civil Engineering |
| title | A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency |
| title_full | A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency |
| title_fullStr | A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency |
| title_full_unstemmed | A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency |
| title_short | A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency |
| title_sort | new method to calculate additional damping ratio considering the effect of excitation frequency |
| url | http://dx.doi.org/10.1155/2020/3172982 |
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