Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7176060 | Journal of Fluids and Structures | 2014 | 17 Pages |
Abstract
For the experimental investigation a test rig has been developed. It consists of a disk attached to a shaft and confined with a small radial gap inside a cylindrical container full of water. The disk can be moved up and down along the shaft to vary the axial distance to the nearby rigid surface. Piezoelectric patches are used to excite the disk and the response is measured with submersible accelerometers. Several excitation patterns can be used due to the disposition of these piezoelectric patches. For each configuration tested, the dynamic response of the structure is studied analyzing the natural frequencies and damping ratio of the disk attached to the shaft. The numerical results have been compared with the experimental results.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
David ValentÃn, Alexandre Presas, Eduard Egusquiza, Carme Valero,