Case Study: Renault anticipates pass-by noise requirements with Actran from Hexagon

Renault anticipates design requirements with Actran to meet pass-by noise regulation

Renault, a global automotive manufacturer, faced the challenge of meeting increasingly stringent international pass-by noise regulations. To avoid costly late-stage design changes, they needed to anticipate these acoustic requirements early in the vehicle development process. Renault partnered with vendor Hexagon and implemented its Actran software to model exterior acoustic propagation and predict noise levels.

Using Hexagon's Actran solution, Renault developed a generic CAE approach to simulate noise from various sources and calculate transfer functions to regulation microphones. The software's performance and high-frequency capabilities allowed them to dramatically improve calculation times, reducing the run time for engine radiation cases by a factor of 5-7. This enabled Renault to accurately optimize vehicle designs for noise compliance early on, reducing development costs and ensuring they could meet future regulations.

Renault

Philippe Mordillat

NVH CAE Expert