Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy Method
Plastic energy dissipation is a key factor in the response of inelastic structures subjected to seismic input, and is often regarded as a primary source of structural damage due to the inelastic deformation of structural components. Accurately predicting a structure’s plastic energy dissipation is e...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/5/1330 |
| _version_ | 1797600773682495488 |
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| author | Yingna Mu Jiting Qu Yu Shu Yanbin Tan |
| author_facet | Yingna Mu Jiting Qu Yu Shu Yanbin Tan |
| author_sort | Yingna Mu |
| collection | DOAJ |
| description | Plastic energy dissipation is a key factor in the response of inelastic structures subjected to seismic input, and is often regarded as a primary source of structural damage due to the inelastic deformation of structural components. Accurately predicting a structure’s plastic energy dissipation is essential for efficient energy-based design and seismic assessment. While a single-degree-of-freedom (SDOF) system provides a simple and effective method for estimating plastic energy dissipation, few studies have explored the use of nonlinear analysis methods or equivalent SDOF systems for this purpose. Based on the principle-of-force-analogy method, firstly, the formulas of plastic energy dissipation of a multi-degree-of-freedom (MDOF) system and its equivalent SDOF system were established. Secondly, two estimation methods of plastic energy dissipation of MDOF systems were proposed. Finally, numerical simulations were performed on several multi-story and high-rise structures with varying heights and spans to compare the plastic energy dissipation of MDOF systems and the equivalent SDOF systems of different modes. The simulation results demonstrate that the proposed methods and formulas accurately estimate plastic energy dissipation in multi-story and high-rise structures, while also requiring fewer calculations and less storage. |
| first_indexed | 2024-03-11T03:52:39Z |
| format | Article |
| id | doaj.art-5aa9ec2b4ccf4aa0a9fc625398b25672 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T03:52:39Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj.art-5aa9ec2b4ccf4aa0a9fc625398b256722023-11-18T00:46:45ZengMDPI AGBuildings2075-53092023-05-01135133010.3390/buildings13051330Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy MethodYingna Mu0Jiting Qu1Yu Shu2Yanbin Tan3Ocean and Civil Engineering Institute, Dalian Ocean University, Dalian 116023, ChinaSchool of Civil Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, ChinaChina Northeast Architecture Design and Research Institute Co., Ltd., Dalian Branch, Dalian 116000, ChinaSchool of Civil Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, ChinaPlastic energy dissipation is a key factor in the response of inelastic structures subjected to seismic input, and is often regarded as a primary source of structural damage due to the inelastic deformation of structural components. Accurately predicting a structure’s plastic energy dissipation is essential for efficient energy-based design and seismic assessment. While a single-degree-of-freedom (SDOF) system provides a simple and effective method for estimating plastic energy dissipation, few studies have explored the use of nonlinear analysis methods or equivalent SDOF systems for this purpose. Based on the principle-of-force-analogy method, firstly, the formulas of plastic energy dissipation of a multi-degree-of-freedom (MDOF) system and its equivalent SDOF system were established. Secondly, two estimation methods of plastic energy dissipation of MDOF systems were proposed. Finally, numerical simulations were performed on several multi-story and high-rise structures with varying heights and spans to compare the plastic energy dissipation of MDOF systems and the equivalent SDOF systems of different modes. The simulation results demonstrate that the proposed methods and formulas accurately estimate plastic energy dissipation in multi-story and high-rise structures, while also requiring fewer calculations and less storage.https://www.mdpi.com/2075-5309/13/5/1330plastic energy dissipationmulti-degree-of-freedom systemequivalent single-degree-of-freedom systemforce analogy method |
| spellingShingle | Yingna Mu Jiting Qu Yu Shu Yanbin Tan Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy Method Buildings plastic energy dissipation multi-degree-of-freedom system equivalent single-degree-of-freedom system force analogy method |
| title | Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy Method |
| title_full | Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy Method |
| title_fullStr | Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy Method |
| title_full_unstemmed | Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy Method |
| title_short | Simplified Estimation Method of Plastic Energy Dissipation for MDOF Systems Using Force Analogy Method |
| title_sort | simplified estimation method of plastic energy dissipation for mdof systems using force analogy method |
| topic | plastic energy dissipation multi-degree-of-freedom system equivalent single-degree-of-freedom system force analogy method |
| url | https://www.mdpi.com/2075-5309/13/5/1330 |
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