Loading...

A study of pre-straining shape memory alloy (SMA)-based control elements subject to large-amplitude cyclic loads

Zareie, S ; Sharif University of Technology | 2020

753 Viewed
  1. Type of Document: Article
  2. DOI: 10.1080/17445302.2020.1726647
  3. Publisher: Taylor and Francis Ltd , 2020
  4. Abstract:
  5. Dynamic environmental loads, such as winds and waves, make the stability of offshore structures at high risk, requiring reliable yet efficient control elements to ensure the stability of such structures under lateral loads. Among the variety of control elements that have been developed to enhance the stability of a structure, shape memory alloy (SMA)-based control elements are promising as they are low-cost, easy to embed into the main control element, and do not need an external power supply. However, cyclic loads may highly influence the performance and functionality of SMA-based elements. The present work investigates the effects of pre-straining SMA components in energy dissipation capacity and its force-displacement behaviour under cyclic loads. The results of experimental tests show that pre-straining SMA by 1.7% significantly reduces the residual deformation and increases the energy dissipation capacity of structures under the short and long-term cyclic loads. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group
  6. Keywords:
  7. Offshore and coastal structures ; Pre-straining ; Shape memory alloy ; Structural control systems ; Connectors (structural) ; Convergence of numerical methods ; Cyclic loads ; Energy dissipation ; Offshore oil well production ; Offshore structures ; Shape memory effect ; Stability ; Structural dynamics ; Coastal structures ; Energy dissipation capacities ; Environmental loads ; External power supplies ; Pre-straining ; Residual deformation ; Shape memory alloys(SMA) ; Structural control system ; Shape-memory alloy
  8. Source: Ships and Offshore Structures ; 2020
  9. URL: https://www.tandfonline.com/doi/abs/10.1080/17445302.2020.1726647