Mathematical Modeling and Dynamical Analysis of a Magnetorheological Elastomer Tuneable Absorber
Magnetorheological elastomer (MRE) is a smart material with mechanical properties that can be adjusted by the application of an external magnetic field.Because their field dependent properties can be tuned selectively,MREs are highly suitable for vibration control systems.In this study,the dynamic properties of MREs were investigated by means of shear loading tests under different driving frequencies (1-80Hz) and strain amplitudes (0.8-2.0%).The results have shown a noticeable decrease of both the storage modulus and loss modulus with an increase of the strain amplitude.However,the increase of the driving frequencies leads to an increase of the storage modulus and a maximum in loss modulus.Based on the experimental results,a mathematical model was proposed to predict the frequency- and amplitude-dependent properties of MREs.Additionally,a dynamic system with an MRE adaptive tuned vibration absorber is used to estimate the control efficiency of MRE absorbers.Compared to conventional absorbers,MRE absorbers improved the performance of vibration control significantly by reducing the vibration amplitude and narrowing the resonant frequency range.
Magneto-rheological elastomers controllable stiffness MR effect adaptive tuned vibration absorbers
Guanghong Zhu Yeping Xiong Stephen Daley R.Ajit Shenoi
Faculty of Engineering and the Environment University of Southampton Southampton,UK
国际会议
南京
英文
1-4
2013-08-20（万方平台首次上网日期，不代表论文的发表时间）