Abstract
For internal combustion engine vehicles, the use stage dominates the life cycle emissions. In comparison, the life cycle emissions of battery electric vehicles highly depend on the electricity mix. With consideration of an European electricity mix the life cycle emissions split approximately equally between the production and use stage. Approximately 46% of these emissions is caused by the battery production. But the absolute and relative share of emissions from the vehicle production increase as well. Thus both stages have to be considered for the environmental assessment of body parts. Therefore the environmental impact of different material concepts as well as production and joining technologies are in focus of the development. A decision regarding environmentally optimized body concepts has to be made in the concept phase. A first approach provides mass indices from Ashby 1999. So, concepts made out of different materials can be developed in a given design space. These concepts are evaluated using a simplified life cycle assessment, which considers different body designs, mobility concepts and markets (electricity mixes). It can be shown that there is a large variance of greenhouse gas emissions for a given lightweight design potential. Hence, an optimization procedure to find concepts with the lowest environmental impacts is needed. In this paper a first approach for an optimization procedure concerning ecological aspects of body parts is described and demonstrated with an example application.
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Reimer, L., Jois, P.K., Henkelmann, H., Meschke, J., Vietor, T., Herrmann, C. (2021). Systematic Design of Body Concepts Regarding Mini-Mal Environmental Impacts in an Early Concept Phase. In: Dröder, K., Vietor, T. (eds) Technologies for economic and functional lightweight design. Zukunftstechnologien für den multifunktionalen Leichtbau. Springer Vieweg, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-62924-6_9
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