Effect of MetaFoundation on the Seismic Responses of Liquid Storage Tanks
Cylindrical liquid storage tanks are vital lifeline structures, playing a critical role in industry and human life. Damages to these structures during previous earthquakes indicate their vulnerability against seismic events. A novel strategy to reduce the seismic demands in the structures is the use...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/5/2514 |
| _version_ | 1797475710031364096 |
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| author | Mostafa Farajian Mohammad Iman Khodakarami Pejman Sharafi |
| author_facet | Mostafa Farajian Mohammad Iman Khodakarami Pejman Sharafi |
| author_sort | Mostafa Farajian |
| collection | DOAJ |
| description | Cylindrical liquid storage tanks are vital lifeline structures, playing a critical role in industry and human life. Damages to these structures during previous earthquakes indicate their vulnerability against seismic events. A novel strategy to reduce the seismic demands in the structures is the use of metamaterials, being periodically placed in the foundation, called MetaFoundation (MF). The periodic configuration of metamaterials can create a stop band, leading to a decrease in wave propagation in the foundation. The aim of this paper is to study the effect of MF on the dynamic behaviour of liquid storage tanks. To that end, the governing equations of motion of the liquid storage tank equipped with MF are derived and solved in the time domain to obtain the time history of the responses under a set of ground motions. Then, the peak responses of tanks, mounted on MF, are compared with the corresponding responses in the fixed base condition. Besides, a parametric study is performed to assess the effect of the predominant frequency of earthquakes, the number of layers of metamaterials, the thickness of soft material, and the damping ratios of soft material on the performance of the MF. The obtained results indicate that the MF improves the dynamic behaviour of the squat tank, in which the mean ratio of responses using MF to the ones in the fixed base conditions equals 0.551 for impulsive displacement, overturning moment, and base shear. |
| first_indexed | 2024-03-09T20:47:53Z |
| format | Article |
| id | doaj.art-a8d7ea2594ad466abf608092ee898cf8 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T20:47:53Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a8d7ea2594ad466abf608092ee898cf82023-11-23T22:42:03ZengMDPI AGApplied Sciences2076-34172022-02-01125251410.3390/app12052514Effect of MetaFoundation on the Seismic Responses of Liquid Storage TanksMostafa Farajian0Mohammad Iman Khodakarami1Pejman Sharafi2Faculty of Civil Engineering, Semnan University, Semnan 35131-19111, IranFaculty of Civil Engineering, Semnan University, Semnan 35131-19111, IranSchool of Engineering, Design and Built Environment, Western Sydney University, Sydney, NSW 2747, AustraliaCylindrical liquid storage tanks are vital lifeline structures, playing a critical role in industry and human life. Damages to these structures during previous earthquakes indicate their vulnerability against seismic events. A novel strategy to reduce the seismic demands in the structures is the use of metamaterials, being periodically placed in the foundation, called MetaFoundation (MF). The periodic configuration of metamaterials can create a stop band, leading to a decrease in wave propagation in the foundation. The aim of this paper is to study the effect of MF on the dynamic behaviour of liquid storage tanks. To that end, the governing equations of motion of the liquid storage tank equipped with MF are derived and solved in the time domain to obtain the time history of the responses under a set of ground motions. Then, the peak responses of tanks, mounted on MF, are compared with the corresponding responses in the fixed base condition. Besides, a parametric study is performed to assess the effect of the predominant frequency of earthquakes, the number of layers of metamaterials, the thickness of soft material, and the damping ratios of soft material on the performance of the MF. The obtained results indicate that the MF improves the dynamic behaviour of the squat tank, in which the mean ratio of responses using MF to the ones in the fixed base conditions equals 0.551 for impulsive displacement, overturning moment, and base shear.https://www.mdpi.com/2076-3417/12/5/2514liquid storage tankMetaFoundationtime domain analysisearthquakepassive controlstop band |
| spellingShingle | Mostafa Farajian Mohammad Iman Khodakarami Pejman Sharafi Effect of MetaFoundation on the Seismic Responses of Liquid Storage Tanks Applied Sciences liquid storage tank MetaFoundation time domain analysis earthquake passive control stop band |
| title | Effect of MetaFoundation on the Seismic Responses of Liquid Storage Tanks |
| title_full | Effect of MetaFoundation on the Seismic Responses of Liquid Storage Tanks |
| title_fullStr | Effect of MetaFoundation on the Seismic Responses of Liquid Storage Tanks |
| title_full_unstemmed | Effect of MetaFoundation on the Seismic Responses of Liquid Storage Tanks |
| title_short | Effect of MetaFoundation on the Seismic Responses of Liquid Storage Tanks |
| title_sort | effect of metafoundation on the seismic responses of liquid storage tanks |
| topic | liquid storage tank MetaFoundation time domain analysis earthquake passive control stop band |
| url | https://www.mdpi.com/2076-3417/12/5/2514 |
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