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- W3201064087 abstract "In Statistical Energy Analysis (SEA) and more generally in all statistical theories of sound and vibration, the establishment of diffuse field in subsystems is one of the most important assumption. Diffuse field is a special state of vibration for which the vibrational energy is homogeneously and isotropically distributed. For subsystems excited with a random white noise, the vibration tends to become diffuse when the number of modes is large and the damping sufficiently light. However even under these conditions, the so-called coherent backscattering enhancement (CBE) observed for certain symmetric subsystems may impede diffusivity. In this study, CBE is observed numerically and experimentally for various geometries of subsystem. Also, it is shown that asymmetric boundary conditions leads to reduce or even vanish the CBE. Theoretical and numerical simulations with the ray tracing method are provided to support the discussion." @default.
- W3201064087 created "2021-09-27" @default.
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- W3201064087 date "2021-08-01" @default.
- W3201064087 modified "2023-09-24" @default.
- W3201064087 title "Vibrational energy distribution in plate excited with random white noise" @default.
- W3201064087 doi "https://doi.org/10.3397/in-2021-1712" @default.
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