Analysis and design of a hybrid re-centring energy dissipation device for steel moment frames

Wenke Tang, Eric M. Lui

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In earthquake resistant design, limiting elastic and inelastic deformations and maximising energy dissipation are important design considerations. In this paper, the numerical modelling, application and design of a device that makes use of the hysteretic response of shape memory alloys (SMA) and energy dissipative capability of a viscous fluid damper for energy dissipation and the superelasticity effect of SMA for re-centring are presented. After the basic workings and numerical modelling of the device are described, a design procedure based on a modified equivalent lateral load method is introduced. A design example is then given to demonstrate that the proposed device can effectively reduce peak interstory and peak top story drifts for a four-story moment frame subject to strong ground motions from 6.28% and 4% to 0.90% and 0.77%, respectively; as well as decrease the residual interstory and residual peak story drifts from 4.34% and 2.3% to 0.12% and 0.14%, respectively.

Original languageEnglish (US)
Pages (from-to)209-239
Number of pages31
JournalInternational Journal of Structural Engineering
Issue number3
StatePublished - 2022


  • SMA
  • earthquake resistant design
  • energy dissipation device
  • shape memory alloys
  • steel moment frames
  • structural re-centring

ASJC Scopus subject areas

  • Civil and Structural Engineering


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