FeNCATB and NiTi45 wires having cross configurations are used
in SMA-HDRBs with aspect ratios of 0.12 (SMA-HDRB-C1). Both
types of SMA wires have the same cross sectional areas
(19.6 mm2). Fig. 10 shows lateral force-deflection curves of SMAHDRB-
C1s consisting of different types of SMA at different shear
strain amplitudes. According to Table 4, at 200% shear strain, the
strain in SMA wires reaches 1.0%. As shown in Fig. 7, the strain at which the forward phase transformation is started in FeNCATB and
NiTi45 wires is 1.6% and 0.6%, respectively. Consequently, when the
SMA-HDRB-C1 equipped with NiTi45 is subjected to 200% shear
strain, wires go to the phase transformation region (see Fig. 7).
The maximum shear force in smart rubber bearings at c = 200% is
141 kN and 147 kN when FeNCATB and NiTI45 wires are used,
respectively. The reason is that, NiTi45 has a higher elastic stiffness