VIBRATION AND STABILITY OF PRETWISTED SPINNING THIN-WALLED COMPOSITE BEAMS FEATURING BENDING–BENDING ELASTIC COUPLING
✍ Scribed by O. SONG; N.-H. JEONG; L. LIBRESCU
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 276 KB
- Volume
- 237
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
A number of issues related to the modelling, vibration and stability of anisotropic pretwisted beams rotating at constant angular speed about the longitudinal body-axis "xed in the inertial space are investigated. The analysis is carried out in the framework of a re"ned theory of thin-walled anisotropic composite beams featuring bending}bending elastic coupling, and encompassing a number of non-classical features such as transverse-shear, anisotropy and pretwist. Special attention is paid to the e!ect of the spinning speed, pretwist angle, axial compressive load and symmetry/non-symmetry of the beam cross-section on natural frequencies and instability of the structural system. Numerical illustrations highlighting their implication on vibration and stability are displayed and pertinent conclusions are outlined.
2000 Academic Press