Abstract
Experimental wind tunnel test results are affected by acquisition times because extreme pressure peak statistics depend on the length of acquisition records. This is also true for dynamic tests on aeroelastic models where the structural response of the scale model is affected by aerodynamic damping and by random vortex shedding. This paper investigates the acquisition time dependence of linear transformation through singular value decomposition (SVD) and its correlation with floor accelerometric signals acquired during wind tunnel aeroelastic testing of a scale model high-rise building. Particular attention was given to the variability of eigenvectors, singular values and the correlation coefficient for two wind angles and thirteen different wind velocities. The cumulative distribution function of empirical magnitudes was fitted with numerical cumulative density function (CDF). Kolmogorov–Smirnov test results are also discussed.
Highlights
Induced Aeroelastic Response on a Uncertainty related to experiments with scale models is an issue which is currently being discussed by the international scientific community
The singular value decomposition of the A180000×6 acceleration matrix was estimated for two different wind angles, 0◦ and 90◦, respectively along and across wind, and thirteen different wind velocities, in order to examine the variability of V6×6 and the diagonal of
Acquisition time dependence of significant magnitudes, such as singular values, eigenvectors and correlation coefficients of wind-induced floor accelerometric signals acquired on a scale model of a high-rise building, is discussed by examining their variability from one time interval to another
Summary
Induced Aeroelastic Response on a Uncertainty related to experiments with scale models is an issue which is currently being discussed by the international scientific community. In the case of dynamic experiments, where structural reacceleration correlations between different levels and wind angles are assumed as signifisponse is affected by nonlinearity and vorticity, model vibration is related to acquisition cant magnitudes in order to have of variability duetunnel to acquisition time length. This paper discusses the acquisition time dependence of wind-induced floor acceleration on asubdivided scale model high-rise building.sub-processes. 2 and 3 discuss the structural of the levels prototype, the experimental model floor acceleration correlation coefficient between both setup different of the building and scaling and construction procedure and, the wind tunnel aeroelastic tests. 2. Structural and 4 discusses the acquisition time dependence of the individual values and of the wind induced floor acceleration correlation coefficient between both different levels of the buildtheingExperimental. The first modal frequency, structural damping ratio and first modal shape were assessed [3,21,22]
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