Abstract

Electromobility for commercial vehicles requires new powertrain concepts with new challenges and phenomena regarding NVH and durability. For the new eActros 600, a new electrical driven rear axle was developed, using Simpack as a simulation tool for various load cases and analyses with different requirements on level of details, computation time and result accuracy.

Therefore, a complex Simpack model was created which can handle different level of details, regarding flexible bodies, gear pairs, contacts etc. by using discrete subvar switches. A model for analyzing complex force distributions in spline couplings as well as function development support in a full vehicle integration.

Slide deck

Presenter Bios

Marc Lässing graduated in 2000 as Diplom-Ingenieur of Automotive Engineering at the University of Applied Science in Esslingen.
From 2000-2002 he was working at the former DaimlerChrysler AG as a CAE engineer at the Research & Technology Center for Vehicle dynamics and had his first contact with Simpack.

In 2002 he joined the Daimler Commercial Vehicles CAE center for NVH Powertrain analysis. He is responsible for full vehicle simulations focused on drivetrain induced vibrations and SiL co-simulations using Simpack. He is also responsible for Simpack installation and licensing within Daimler Truck.

Tilman Renz graduated in 2002 as "Diplom-Physiker" at Universität Stuttgart. In 2003 he joined the Daimler company (then "DaimlerChrysler AG") at the Research Center for Acoustics and NVH.

Since 2005 he is working at the Commercial Vehicles CAE center at Daimer AG on different fields: After dealing with fuel efficiency simulation (“longitudinal dynamics") and control strategy optimization of cooling system components, he switched to the Team “Thermal Management”, with focus not only on conventional cooling systems layout but also cooling systems for electric drivetrains and new approaches of HVAC systems in buses.

In 2018 he joined the Team "CAE Engine Dynamics" and started using Simpack as the main tool for his tasks. He is currently responsible for 3D-MBS evaluation of crank train durability at Daimler Truck AG, and recently also for detailed NVH simulation of the new electric axle of Daimler Trucks latest battery electric long-haul truck.