Choi, W.J., Xiong, Y.P. and Shenoi, R.A. (2007) Vibration characteristics of smart sandwich beams embedded with magnetorheological elastomer cores In Advancements in Marine Structures: Proceedings of the 1st MARSTRUCT International Conference, Glasgow, UK, 12-14 March 2007. Taylor & Francis. 8 pp, pp. 421-428.
Abstract
Magnetorheological Elastomer (MRE) material consisting of a natural or synthetic rubber filled with micron sized iron particles is a smart material whose properties can be controlled by external excitation. Due to rubber like properties, MRE maybe appropriate to apply as a core material in sandwich structures. In this paper, the dynamic characteristics of an MRE core embedded smart sandwich beam are investigated. An analytical model based on Frostig’s high order beam theory is enhanced to include viscoelastic material prop-erties and their frequency dependence. In numerical simulations, sandwich beam-like structures with varying portions of MRE core and different boundary conditions are considered. Based on numerical study, mode shapes are changed at some particular frequencies depending on the strength of magnetic field. The maximum change of the resonant frequency is up to 12% and the first resonant peak decreases by about 8dB due to in-creased damping in MRE when magnetic field applied. MRE core embedded sandwich beam are shown as be-ing able to achieve adjustable stiffness and damping to design tuneable vibration absorber for applications in ship structures.
Full text not available from this repository.
More information
Identifiers
Catalogue record
Export record
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.