Study of the Complex Stiffness of a Vibratory Mechanical System with Shape Memory Alloy Coil Spring Actuator

Table 1

Stiffness of the NiTi SMA spring actuator as a function of temperature.

Temperature (°C)	Stiffness (N/m)
	Heating	Cooling
25	2280.3	2396.3
30	2337.1	2382.5
35	2388.6	2474.8
40	2502.6	2654.1
45	2701.6	2907.4
50	2897.2	3044.7
55	3053.8	3110.3
60	3083.1	3128.4
65	3117.4	3137.6
70	3134.5	3144.4