MODAL ANALYSIS OF FRACTIONAL DERIVATIVE DAMPING MODEL OF FREQUENCY-DEPENDENT VISCOELASTIC SOFT MATTER

摘要：

In this study, the fractional derivative is employed to describe the frequency-dependent damping behaviors of viscoelastic soft matter, and the modal analysis of such fractional derivative governing equation model is carried out in comparison with the corresponding integer-order derivative vibration models of classical viscous and hysteretic dampings. The Fourier transformation is used to derive frequency response functions and the Nyquist plots. And dynamic properties of viscoelastic soft matters, such as natural frequency, are displayed via the Nyquist plot and the frequency response function. For viscoelastic soft matter obeying frequency-dependent damping law, the Nyquist plot characterizes the features of both the viscous and the hysteretic systems, which varies with the order of the fractional derivative describing damping behaviors.

关键词： viscoelastic soft matter frequency-dependent damping fractional derivative modal analysis nyquist plot

作者: Shuai Hu Wen Chen Xiaofan Gou

作者单位: Institute of Soft Matter Mechanics, Department of Engineering Mechanics, Hohai University, Nanjing 210098, China

会议类型: 国际会议

会议名称: The Fifth International Conference on VETOMAC-V(第五届振动工程及机械技术国际会议)

会议地点: 武汉

会议语种:英文

页码: 112-116

在线出版日期: 2009-08-27（万方平台首次上网日期，不代表论文的发表时间）