In the straight configuration, two continuous SMA wires are
wound in two opposite sides of the rubber bearing as shown in
Fig. 1a. This type of arrangement of SMA wires was proposed by Choi et al. [11]. Each wire passes through four steel hooks which
are welded at each corner of steel plates. In such a configuration,
the induced strain along the SMA wire due to the cyclic lateral displacement
of rubber bearing noticeably decreases since one continuous
wire is used instead of four wires fixed at each corner of
the supporting plate.