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- W3205082323 abstract "In general, the cross-sectional centroids of the variable-height asymmetric beam change in the height direction. The Timoshenko beam theory does not consider the influence of the varying cross-sectional centroids and cannot accurately reveal the vibration of variable-height asymmetric beams. Considering that the cross-sectional centroids are dislocated, we propose a novel dynamic model for the variable-height asymmetric beam element. The proposed dynamic model is based on the rigid-plane assumption and can reflect its main mechanical characteristics. The non-collinear axial forces produce the complementary moment. The rotational radiuses of the two ends of longitudinal fibers are not equal. After retaining the main mechanical characteristics, the variable-height element is roughly treated as a constant-height element to simplify the governing differential equations. A bonded-type piezoelectric transducer with variable-height asymmetric beams is taken as an example to verify the developed dynamic model. The theoretical and experimental resonant frequencies are 39338 Hz and 38704 Hz, respectively, with a difference of 634 Hz and a relative error of 1.638%. The calculated displacement vibration shapes are consistent with the experimental results. Finally, the modeling differences between variable-height symmetric and asymmetric beams are clarified from three aspects." @default.
- W3205082323 created "2021-10-25" @default.
- W3205082323 creator A5019254373 @default.
- W3205082323 creator A5080990232 @default.
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- W3205082323 date "2022-03-01" @default.
- W3205082323 modified "2023-10-18" @default.
- W3205082323 title "Longitudinal-transverse coupled vibrations of variable-height asymmetric beams: Modeling, analysis, and case study" @default.
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- W3205082323 doi "https://doi.org/10.1016/j.ymssp.2021.108504" @default.
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