Joseph, TK and Renji, K and Venkatraman, K (2019) On the region for the application of passive damping treatment and loss factor enhancement. In: International Journal of Acoustics and Vibrations, 24 (4). pp. 693-700.
|
PDF
ijav_24-4_2019_693-700.pdf - Published Version Download (675kB) | Preview |
Abstract
The loss factor of a structure is significantly improved by using constrained damping treatment. For a mass efficient design, the damping material is to be applied at suitable locations. The studies reported in literature use the modal strain energy distribution in the viscoelastic material or the strain energy distribution in the base structure as tools to arrive at these suitable locations for the damping treatment. It is shown here that the regions identified through the above criteria need not be suitable for certain bending modes of vibration. A new approach is proposed in which the strain in the viscoelastic material and the angle of flexure are shown to be more reliable in arriving at the locations for the damping treatment. Providing damping layers at identified locations using these parameters results in significant loss factors with minimal added mass.
| Item Type: | Journal Article |
|---|---|
| Publication: | International Journal of Acoustics and Vibrations |
| Publisher: | International Institute of Acoustics and Vibrations |
| Additional Information: | Copyright of this article belongs to International Institute of Acoustics and Vibrations |
| Keywords: | Location; Strain energy; Viscoelasticity, Base structure; Damping material; Damping treatment; Mass efficient; Modal strain energy; Passive damping; Strain energy distributions; Visco-elastic material, Damping |
| Department/Centre: | Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) |
| Date Deposited: | 28 Jan 2020 08:31 |
| Last Modified: | 24 Feb 2020 04:58 |
| URI: | http://eprints.iisc.ac.in/id/eprint/64466 |
Actions (login required)
 |
View Item |
