Prediktering av gnissel och gnek för robust produktutveckling inom fordonsindustrin

​​Mohsen Bayani, produktutveckling IMS och forskare vid Personal Driving Experience Center på Volvo Car Corporation försvarar sin doktorsavhandling den 3 december.

Mohsens forskningsfokus ligger på att förbättra verktyg och metoder för att förutsäga och simulera gnissel och gnekljud i fordonsindustrin under designstadiet av en bil.
Han har arbetat som forskare och projektingenjör inom olika discipliner inom fordonsindustrin i cirka 15 år, inklusive buller och vibrationer, styrka, fordonsdynamik och chassikontrollsystem.


Populärvetenskaplig sammanfattning (engelska)
The sound quality of a product conveys its operational quality. The customers - consciously or not - connect some quality attributes of a product to its sound quality, such as the powerfulness, robustness and durability. While some operational sounds in these products are designed to indicate their quality, the existence of unexpected irregular sounds in a product might be perceived as annoying if not a failure indicator. In passenger cars, squeak and rattle sounds are the most common annoying sounds of this type that are audible inside the car cabin.

For decades, customer complaints about squeak and rattle have been among the top sound quality issues in the automotive industry, burdening high warranty costs to the car manufacturers. Today, the quieter in-cabin environment due to improvements in the operational sound quality of the car subsystems, as well as the increasing popularity of electric engines, as green and quiet propulsion solutions, stress the necessity for attenuating annoying sounds like squeak and rattle more than in the past.

To rectify squeak and rattle problems in a robust, sustainable and economic way, it is needed to address the problems during the design stage of the car, where concept-related changes are economically justifiable.

This research investigates the development and application of methods and tools in different engaged fields to enable the detection and rectification of squeak and rattle risk during the car design stages.

Sidansvarig Publicerad: to 25 nov 2021.