Voltage-induced pinnacle response in the dynamics of dielectric elastomers.
A dielectric elastomer is capable of large deformation under alternating electromechanical excitation. In this paper, several dynamic properties of a dielectric elastomer are investigated, in particular the effect of strain stiffening. A theoretical model is established that shows that the bias voltage affects the amplitude and the response waveform during vibration, a curve with the shape of a pinnacle. We also describe the underlying physical mechanism by considering the molecular chain length and cross-linking density of the material. A phase portrait is presented that reveals the transitional behavior of the dielectric elastomer as it switches between soft and stiffened vibration states.
School of Mechanical Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.|State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.
Bo
B
Li
State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.|School of Aerospace, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.
Junshi
J
Zhang
School of Mechanical Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.|State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.
Hualing
H
Chen
School of Mechanical Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.
Dichen
D
Li