Case Study: Scania achieves faster development and improved cabin quality with Altair's Squeak & Rattle Director

Simulating Squeak & Rattle Phenomena During the Development of a Truck Cabin

Scania CV AB, a global manufacturer of trucks and buses, needed to accurately predict and prevent squeak and rattle noise in truck cabins early in the design cycle instead of relying on tolerance calculations and later prototype fixes. To address this, Scania engaged LeanNova Engineering AB and Altair ProductDesign and deployed Altair’s Squeak & Rattle Director (SNRD) to enable simulation‑driven development of the cabin.

Altair ProductDesign used SNRD to perform modal correlation of parts, build full vehicle cabin models, and run road‑load driven simulations—completing two full design loops and multiple studies over 16 months. Altair’s solution reduced dependence on hardware testing, accelerated development time, helped identify high‑risk interfaces for corrective design changes, and improved product quality by enabling more right‑first‑time designs and fewer iterative prototype fixes.

Scania

Jan Söderlund

Head Instrument Panel, Driver Control Unit and Climate System