The effect of magnetic stress and stiffness modulus on resonant characteristics of Ni-Mn-Ga ferromagnetic shape memory alloy actuators

► Dynamic FSMA actuation shows 5% MFIS driven under 3.5-kOe field at 650 Hz. ► H amplitude and FSMA actuator stiffness affect the FSMA resonant responses. ► Resonant actuation of FSMA requires much lower H than quasi-static actuation. ► Bias spring constant and FSMA modulus influence the FSMA actuator stiffness.