A numerical study on bolted end-plate connection using shape memory alloys |
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| Authors: | Hongwei Ma Chongdu Cho Tim Wilkinson |
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| Affiliation: | (1) Department of Civil Engineering, South China University of Technology, Guangzhou, 510640, P.R. China;(2) Department of Mechanical Engineering, Inha University, Incheon, 402-751, South Korea;(3) School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia |
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| Abstract: | Superelastic shape memory alloys (SMAs) have the ability to recover their original shape after experiencing large strains.
A new beam-to-column connection incorporating long shank SMA bolts is presented in this paper. By using the unique characteristics
of SMAs, the connection possesses self-centering abilities. The 3D connection model is created using the software ANSYS, and
Auricchio’s model is used to simulate the superelastic behavior of the SMA bolts. With cyclic loads applied on the beam ends,
the behavior of the connection is studied. The results show the semi-rigid and moderate energy dissipation characteristics
of the connection. Since the moment-carrying capacity of bolt cluster controlled below the elastic flexural capacity of connecting
beam, a superelastic hinge forms just at the beam-to-column interface. The inelastic interstory drift angle of the connection
reaches 0.035 rad, and 94% of the total rotations are recoverable upon unloading. |
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| Keywords: | Superelastic effect Semi-rigid Ductility Connection Shape memory alloy |
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