Journal article
Experimental dynamic performance of an Aluminium-MRE shallow shell
Smart structures and systems, Vol.25(1), pp.57-64
25/01/2020
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Abstract
The nonlinear dynamics of a directly forced clamped-clamped-free-free magneto-rheological elastomer (MRE) sandwich shell has been experimentally investigated. Experiments have been conducted on an aluminium shallow shell (shell A) and an MRE-aluminium sandwich shallow shell with single curvature (shell B). An electrodynamic shaker has been used to directly force shells A and B in the vicinity of their fundamental resonance frequency; a laser displacement sensor has been used to measure the vibration amplitude to construct the frequency-response curves. It was observed that for an aluminium shell (shell A), that at small forcing amplitudes, a weak softening-type nonlinear behaviour was observed, however, at higher forcing amplitudes the nonlinear dynamical behaviour shifted and a strong hardening-type response occurred. For the MRE shell (shell B), the effect of forcing amplitude showed softening at low magnetic fields and hardening for medium magnetic fields; it was also observed the mono-curved MRE sandwich shell changed dynamics to quasiperiodic displacement at some frequencies, from a periodic displacement. The presence of a magnetic field, initial curvature, and forcing amplitude has significant qualitative and quantitative effects on the nonlinear dynamical response of a mono curved MRE sandwich shell.
Details
- Title
- Experimental dynamic performance of an Aluminium-MRE shallow shell
- Creators
- Jiawei Zhang - University of SydneyTanju Yildirim - Australian National UniversityGuru Prakash Neupane - Australian National UniversityYuechuan Tao - University of SydneyJiang Bingnong - University of Technology SydneyWeihua Li - University of Wollongong
- Publication Details
- Smart structures and systems, Vol.25(1), pp.57-64
- Publisher
- Techno-Press
- Identifiers
- 991013181795802368
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article