Abstract
This paper deals with the problem of controlling the bending oscillations of cantilevers subjected to harmonic time-dependent excitations and with that of enhancing their eigenvibration response characteristics. The structural model consisting of a thin-walled beam of arbitrary cross-section includes a number of nonclassical effects, such as transverse shear, secondary warping and heterogeneity. The control is achieved via the action of a bending moment applied at the tip of the structure. A dynamic feedback control law relating the boundary bending moment to the angular velocity at the tip of the structure is implemented and its implications upon the closed-loop eigenvalues and dynamic response to harmonic excitations are revealed. A computational methodology based on the extended Galerkin's technique aimed at determining the closed-loop response characteristics is used and numerical results revealing the efficiency of the adopted control methodology are displayed.
| Original language | English |
|---|---|
| Pages (from-to) | 687-700 |
| Number of pages | 14 |
| Journal | European Journal of Mechanics, A/Solids |
| Volume | 17 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1998 |
| Externally published | Yes |
Keywords
- Boundary control
- Closed-loop eigenvalues
- Oscillation
- Response
- Thin-walled beam
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
- Physics and Astronomy(all)