PDT Application: Systematic Decision Tool for Seeking Optimum Performance 2019-01-0820
The NVH development for interior quietness as related to air-borne noise of a new automobile typically undergoes several stages where each stage can consist of various models. The issue is how do you track NV performance progression and how can one ensure that this progression is efficient and that NV specialists avoid seat-of-the-pants decisions. Additionally, sound proof material packages are developed by multiple suppliers and therefore how can OEMs catalog each performance in order to assign the right selection. Is there a platform which facilitates the comparison of NV performance at various levels (component, parts and flat samples)? Performance Design Tool (PDT) is a comprehensive vehicle development management system that allows NVH engineers to establish a systematic process to make sound design decisions which will save time and money. In PDT, the Energy Transmission Loss (ETL), which is a metric established by HONDA that can evaluate insulation and absorption performance in a comparable manner, has been further developed by collaborating with Hybrid Statistical Energy Analysis (HSEA) model, and it enables engineers to analyze more details of system performance. This paper will illustrate this systematic process by applying it to a vehicle model where new sound pressure level (SPL) targets are to be met. It will show the use of one of the key functions in PDT to automatically allocate the required Transmission Loss and Absorption Coefficient in order to meet the new SPL targets. This information is translated into ETL levels and by comparing ETLs a systematic and quick process has been established to find effective systems for countermeasure. The example in this paper concludes that the vehicle model achieves the SPL target by following this systematic process.
Allen Teagle-Hernandez, Fumihiko Ide, Takehisa Matsuda, Shota Ichikawa
California State University, Long Beach, Honda R & D Americas, Inc., HSEA Technology, Inc., K and A JPN