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Methodical conception and development of innovative lightweight chassis systems, illustrated by the example of the "LEICHT" concept

Höfer, Andreas and Friedrich, Horst E. (2014) Methodical conception and development of innovative lightweight chassis systems, illustrated by the example of the "LEICHT" concept. Springer Vieweg. ISBN 978-3-658-05977-4.

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In the context of future electric vehicles, new requirements and restrictions, but also larger degrees of freedom, have been revealed for vehicle concepts. To meet the revised conditions, new approaches are necessary as well as a holistic view of the vehicle and its subsystems. Those revised conditions are for example the integration of new and additional functions into the chassis, the reduction of the unsprung mass or the maximization of the packaging space that can lead to a complete redesign of the automobile. In this paper, a methodical conception and development process is presented that faces the changed boundary conditions brought by the electrification and proposes an ap-proach that is divided in 3 main phases. Based on the properties of the vehicle concept, the drive and chassis requirements are derived in phase I of the process. With conceptual design matrices, the drive properties can be determined and afterwards the drive can be dimensioned. In phase II, innovative chassis systems are conceptualized through applying different lightweight strategies. Hereby, the focus is laid on fulfilling the changed chassis requirements and on a possible integration of the drive in the chassis. After the evaluation of the innovative lightweight structures, phase III, the engineering phase, begins were the concepts are developed by means of computer aided design, simulation and multi-body dynamics. In accordance with the theoretical description of the 3 phases, the methodical approach is illustrated by presenting an innovative, electrically powered lightweight chassis concept, the “LEICHT ” - Concept, that was developed with the proposed approach. The “LEICHT” promises a significant weight reduction by integrating the motor in an intelligent way. In addition, the impact on the motor is reduced and the freedom in packaging is maximized. Through the application of the drive/chassis module on all four wheels, new possibilities for vehicle dynamics control strategy can be applied.

Item URL in elib:https://elib.dlr.de/89605/
Document Type:Proceedings
Title:Methodical conception and development of innovative lightweight chassis systems, illustrated by the example of the "LEICHT" concept
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Höfer, Andreasandreas.hoefer (at) dlr.deUNSPECIFIED
Friedrich, Horst E.horst.friedrich (at) dlr.deUNSPECIFIED
Date:25 June 2014
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:331
Pfeffer, PeterMunich University of Applied Sciences
Publisher:Springer Vieweg
Keywords:Chassis, Lightweight, Methodical approach
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Neuartige Fahrzeugkonzepte und -strukturen (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Lightweight and Hybrid Design Methods
Deposited By: Höfer, Andreas
Deposited On:23 Jul 2014 11:03
Last Modified:31 Jul 2019 19:46

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