Development of equivalent inelastic springs to model C-devices

Oday Al-Mammori, Juan Martinez-Rueda

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

Abstract

'C' shape yielding devices (C-devices) are effective tools for introducing supplemental sources of energy dissipation by hysteresis. Studies have shown that C-devices made of mild steel can be successfully applied as integral parts of seismic retrofitting schemes. However, explicit modelling of these devices can become cumbersome, expensive and time consuming. The device under study in this article has been previously used in non-invasive dissipative bracing for seismic retrofitting. The device is cut from a mild steel plate and has an overall shape that resembles that of a rectangular portal frame with circular interior corner transitions to avoid stress concentration and to control the extension of the dissipative region of the device. A number of inelastic finite element (FE) analyses using either inelastic 2D plane stress elements or inelastic fibre frame elements are reported and used to calibrate a 1D equivalent inelastic spring model that effectively reproduces the cyclic response of the device. The more elaborate FE model accounts for the frictional forces developed between the steel plate and the bolts used to connect the C-device to structural members. FE results also allow the visualization of the inelastic regions of the device where energy dissipation is expected to occur. FE analysis results are in a good agreement with experimental observations.
Original languageEnglish
Title of host publicationWorld Academy of Science, Engineering and Technology
Subtitle of host publication International Journal of Urban and Civil Engineering
PublisherWorld Academy of Science, Engineering and Technology
Pages12-17
Number of pages6
DOIs
Publication statusPublished - 31 Jan 2019
EventINTERNATIONAL CONFERENCE ON EARTHQUAKE ENGINEERING AND SEISMIC DESIGN - Istanbul, Turkey
Duration: 30 Jan 201931 Jan 2019
Conference number: 19TR01ICEESD
https://waset.org/conference/2019/01/istanbul/ICEESD

Publication series

NameProceedings of the World Academy of Science, Engineering and Technology 
Number1
Volume13
ISSN (Print)2010-376X
ISSN (Electronic)2010-3778

Conference

ConferenceINTERNATIONAL CONFERENCE ON EARTHQUAKE ENGINEERING AND SEISMIC DESIGN
Abbreviated titleICEESD 2019
CountryTurkey
CityIstanbul
Period30/01/1931/01/19
Internet address

Fingerprint

Retrofitting
Carbon steel
Energy dissipation
Structural members
Bolts
Hysteresis
Stress concentration
Visualization
Finite element method
Steel
Fibers

Keywords

  • Energy dissipation device
  • yield device
  • C-device
  • Finite element analysis
  • seismic redesign
  • nonlinear analysis

Cite this

Al-Mammori, O., & Martinez-Rueda, J. (2019). Development of equivalent inelastic springs to model C-devices. In World Academy of Science, Engineering and Technology: International Journal of Urban and Civil Engineering (pp. 12-17). (Proceedings of the World Academy of Science, Engineering and Technology ; Vol. 13, No. 1). World Academy of Science, Engineering and Technology. https://doi.org/10.5281/zenodo
Al-Mammori, Oday ; Martinez-Rueda, Juan. / Development of equivalent inelastic springs to model C-devices. World Academy of Science, Engineering and Technology: International Journal of Urban and Civil Engineering. World Academy of Science, Engineering and Technology, 2019. pp. 12-17 (Proceedings of the World Academy of Science, Engineering and Technology ; 1).
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Al-Mammori, O & Martinez-Rueda, J 2019, Development of equivalent inelastic springs to model C-devices. in World Academy of Science, Engineering and Technology: International Journal of Urban and Civil Engineering. Proceedings of the World Academy of Science, Engineering and Technology , no. 1, vol. 13, World Academy of Science, Engineering and Technology, pp. 12-17, INTERNATIONAL CONFERENCE ON EARTHQUAKE ENGINEERING AND SEISMIC DESIGN, Istanbul, Turkey, 30/01/19. https://doi.org/10.5281/zenodo

Development of equivalent inelastic springs to model C-devices. / Al-Mammori, Oday; Martinez-Rueda, Juan.

World Academy of Science, Engineering and Technology: International Journal of Urban and Civil Engineering. World Academy of Science, Engineering and Technology, 2019. p. 12-17 (Proceedings of the World Academy of Science, Engineering and Technology ; Vol. 13, No. 1).

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

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Al-Mammori O, Martinez-Rueda J. Development of equivalent inelastic springs to model C-devices. In World Academy of Science, Engineering and Technology: International Journal of Urban and Civil Engineering. World Academy of Science, Engineering and Technology. 2019. p. 12-17. (Proceedings of the World Academy of Science, Engineering and Technology ; 1). https://doi.org/10.5281/zenodo