Affiliations: [a] Department of Civil Engineering, Xi'an Jiaotong
University, Xi'an, Shaanxi, China | [b] State Key Laboratory for Mechanical Behavior of
Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, China | Université Laval, Canada | Tohoku University, Japan
Correspondence:
[*]
Corresponding author: Qing Sun, Department of Civil Engineering,
Xi'an Jiaotong University, Xi'an, Shaanxi, China. E-mail:
sunq@mail.xjtu.edu.cn
Abstract: The primary objectives of this work are about the experimental study
on the nonlinear electromechanical behaviour of the macro fiber composite
(MFC), and to analyse the affecting factors of the inconstant parameters d33
and d31 which can arouse nonlinearities of MFC. Both longitudinal and
transverse output strains are measured by actuating the MFC specimen under
different DC voltages and a range of peak-to-peak sinusoidal voltages (VPP) at
various frequencies, which can investigate how the voltage amplitude and
frequency affect nonlinear hysteretic behavior. The experimental results of
both DC voltages and AC voltages indicate that the relationship of the applied
voltage and output strain displays nonlinear hysteretic behavior. The responses
of the AC voltages also indicate that hysteresis nonlinearity behaviour of the
MFC actuator is sensitive to the varying voltage amplitude and frequency. The
higher the voltage and frequency are, the more obvious the hysteresis
phenomenon are.
Keywords: Macro fiber composite, electromechanical behavior, nonlinear, dynamic, experiment study
