On the free-vibration of rotating composite beams using a higher-order shear formulation

摘要: The free vibration behavior of rotating blades modeled as laminated composite, hollow (single celled) boxed beams is investigated. To this end, geometrically nonlinear structural model incorporating a number non- classical effects such anisotropy, heterogeneity, transverse shear flexibility, and warping inhibition developed. Centrifugal Coriolis force field are also considered in the formulation. However, effect discarded during solution process. It assumed that in-plane cross-sectional distortion negligible. In contrast to existing blade models, traction boundary conditions on external surfaces beam identically satisfied. linearized dynamical equations numerical results addressing problem supplied. Results obtained for present higher-order shearable compared with those first-order non-shearable models. Tailoring studies using reveal an enhancement eigenfrequency characteristics.