ELECTRIC FIELD-DEPENDENT VIBRATION CHARACTERISTICS OF A PLATE FEATURING AN ELECTRORHEOLOGICAL FLUID
✍ Scribed by S.-B. CHOI
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 390 KB
- Volume
- 234
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
Recently, smart structures with inherent adaptive capabilities to variable environments have made great progress as a new methodology for vibration control. Typically, incorporated with aluminium, steel, and composite materials, smart structures have exploited piezoelectric sensing and actuating technologies, shape memory alloy actuators, and electrorheological (ER) #uid actuators. It is well known that ER #uid itself exhibits dramatic and reversible phase change in the presence of electric "elds. Embedded in voids of distributed parameter structures, ER #uid enables sti!ness and damping properties of the structure, to be actively tuned by the intensity of the electric "eld applied to the ER #uid domain. Choi et al.
[1] carried out experimental investigations on the "eld-dependent vibration characteristics of ER #uid-based cantilevered beams. The natural frequencies and loss factors are identi"ed with respect to the intensity of the electric "eld. Choi et al. [2] experimentally implemented an active control scheme for an ER #uid-based beam via measured "eld-dependent transfer function between voltage input and changed damping and sti!ness outputs. Gong and Lim [3] experimentally observed "eld-dependent vibration properties of a sandwiched beam clamped at both ends and fully or partially treated with an ER #uid layer. Yalcintas and Coulter [4] proposed an analytic model to predict