| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Estadual Campinas, Dept Computat Mech, Fac Mech Engn, BR-13083860 Sao Paulo - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME; v. 137, n. 4 AUG 2015. |
| Web of Science Citations: | 7 |
| Abstract | |
In this work, the forced response of rotating rings exhibiting nonperiodic and periodic variations in material properties and geometry is assessed by means of the spectral element method (SEM). Based on the Euler-Bernoulli beam theory, a spectral element for a planar rotating ring is derived. This spectral element allows the investigation of the effects of structural damping, internal pressure and elastic foundations in the harmonic response of rotating rings. The dynamic response of rotating rings including periodic imperfections that lead to band gap effects is addressed. The spectral element formulation provides exact solutions within the range of validity of the applied theory using a reduced number of degrees-of-freedom. Thus, it contributes to reducing the computational time. It also provides a straightforward way to solve structural dynamics problems including arbitrary boundary conditions and discontinuities. The proposed formulation is validated by comparison with analytical solutions, which are available only for uniform homogenous rings. (AU) | |
| FAPESP's process: | 10/17317-9 - Study of elastic wave propagation throught periodic media |
| Grantee: | Priscilla Brandão Silva |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 14/19054-6 - Design of periodic structures with application to phononic crystals and acoustic metamaterials |
| Grantee: | Danilo Beli |
| Support Opportunities: | Scholarships in Brazil - Doctorate |