FEM based prediction model for the impact sound level of floors
- Up to now the research and developmen
t in the field of building acoustics is based mainly on measurements. The
consequence is that the development and optimization of a new building component is a very tedious and
expensive task. A considerably reduction of these costs could be achieved, if the optimization relying on
measurements would be replaced – at least to some extent – by a computational prediction model. Motivated by
these aspects a method is presented for using finite element techniques to estimate the impact sound level from
lightweight floors. The overall approach consists of the three-dimensional modeling of the structure and the
excitation source (tapping machine), the subsequent moda
l- and spectral analyses an
d the computation of the
radiated sound from the ceiling.