Acoustic Performance Simulation of a BIM model from the IFC Data Schema
DOI:
https://doi.org/10.55753/aev.v36e53.12Keywords:
Acoustic performance, IFC, Simulation, Building Information ModelingAbstract
This article has the objective of verifying the possibility of using a BIM (Building Information Modeling) model to estimate the acoustic performance of a partition. For that goal, a simplified BIM model using a specific software was realized and the Industry Foundation Classes (IFC) data schema of these model was exported. With the data, all the geometrical information and specifications of the project on the IFC with the IfcOpenShell library were extracted using the Python tool. With the extracted data, the Statistical Energy Analysis (SEA) was used to determinate the acoustic performance. The calculation was performed in the signal processing software. For comparison purposes, the simulation of the same project was performed using the commercial software SONArchitect ISO, following the usual simulation procedures. The material properties considered in SEA analysis were the same for the simulation in commercial software. The parameter DnT,w was defined for analysis as it is a requirement of the Brazilian performance standard ABNT NBR 15575: 2013. Despite the limitations of the acoustic performance calculations by SEA and the complexity to extract information of IFC, close results were obtained comparing the two methodologies. However, it was remarkable a larger divergence in the low frequencies, according to previous studies. Thus, the main objective was achieved, since it is possible to perform simulations of acoustic performance with a BIM model.
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