Speaker
Description
Engineering offices and manufacturers of acoustic building systems or materials often rely on measurement data to determine the adequacy of solutions for specific situations. This typically involves numerous costly and time-consuming laboratory measurements, making it difficult to efficiently explore and optimize various design configurations.In this paper, a method for predicting the sound insulation of multilayer structures is validated against experimental data from real-life floor systems. The method is based on analytical three-dimensional elastodynamic analysis of the system components, so it combines accuracy with computational efficiency. Accuracy ensures reliability, while efficiency is crucial for optimization, where numerous simulations are needed, for example to identify the ideal layering or material properties of a(n) (inter)layer. The prediction method accounts for arbitrary layering, finite dimensions, boundary conditions and resulting modal behavior, as well as frequency-, load- and temperature-dependent material properties.We take a closer look on the prediction of impact sound insulation of floating floors, demonstrating the model’s capabilities. Several different systems, consisting of concrete base floors, cross-laminated timber (CLT) panels, full-surface elements and wet/dry screeds, were tested to show the model’s robustness and reliability.