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- W1978989860 abstract "Structural modification of geometry has been proven to be very effective when it was necessary to improve the dynamic performance of some structures [A. J. Keane, J. Sound Vib. 185(3), 441–453 (1995)]. This technique has the advantage of achieving good performance even without the heavy viscoelastic treatments or the high-tech, high-cost active vibration control schemes. In this paper a T-beam structure [R. P Szwerc, C. B. Burroughs, S. A. Hambric, and T. E. McDevitt, J. Acoust. Soc. Am. 107, 3186–3195 (2000)] of uniform cross section is modified in order that the power transmitted to some point, due to an external excitation, is minimized. The modification of geometry is made only in one of the legs of the T-beam. The structure will be modeled combining the finite element method and the spectral element method. The dynamic response of the structures (initial and modified configurations) will be carried between 0–350 Hz; the first ten resonances are placed in this frequency range. After defining a specific region to be optimized via genetic algorithms, the options to minimize the frequency response will be shown; in some cases it is possible to move one or more resonances, in others only a reduction on the response between the nonresonance frequencies is permitted." @default.
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- W1978989860 date "2002-10-25" @default.
- W1978989860 modified "2023-09-24" @default.
- W1978989860 title "Effects of cross‐sectional variation in T‐beam structures" @default.
- W1978989860 doi "https://doi.org/10.1121/1.4779268" @default.
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