Multi-Physics Field Simulation and Optimization of Directional Sound Barrier Based on Finite Element Algorithm

Directional sound barrier enclosure is a specially designed acoustic isolation device characterized by directional control, structural optimization and customization, and suitability for specific environments. This study aims to explore and optimize the design of a directional sound barrier enclosure to enhance the directivity of the sound source at the front end and improve noise control at the rear end. The limitations of existing sound barrier designs are outlined, and the basic structure of the directional sound barrier enclosure is subjected to finite element engineering analysis using finite element algorithms in this research. A multiphysics simulation model is established, defining acoustic and structural variables. Considering the constraint of the overall appearance of the enclosure, the acoustic performance of 12 structurally different configurations of directional sound barrier enclosures is investigated. Simultaneously, the project's time and cost efficiency is comprehensively analyzed. To validate the accuracy and practical applicability of the simulation results, the calculated outcomes are compared with the actual test results of fabricated samples. Results from experiments conducted in a fully anechoic laboratory indicate that the engineering analysis based on finite element algorithms is accurate, and there is a high consistency between the actual test results and the multiphysics simulation outcomes. The optimized directional sound barrier enclosure meets the practical requirements for specific environmental applications.