A trend towards light-weighted structures in civil engineering can be observed. In most cases the structural components consist of inhomogenous orthotropic material with considerable uncertainties of stiffness, damping and boundary conditions. The serviceability linked with vibrations is a key issue for such light-weighted structures especially for timber slabs. In particular in a frequency range beneath 100 Hz these structures are prone to pedestrian induced vibrations, footfall noise as well as re-radiated sound. Model updating is applied on Finite Element Models (FEM) correlated to experimental modal analysis data (EMA) to gain experience on modelling parameters. Two examples are discussed with the focusing on the dynamic behaviour of orthotropic light-weighted structures.
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A trend towards light-weighted structures in civil engineering can be observed. In most cases the structural components consist of inhomogenous orthotropic material with considerable uncertainties of stiffness, damping and boundary conditions. The serviceability linked with vibrations is a key issue for such light-weighted structures especially for timber slabs. In particular in a frequency range beneath 100 Hz these structures are prone to pedestrian induced vibrations, footfall noise as well a...
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