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Fatigue4Light
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Fatigue4Light – A research project focusing on lightweight and fatigue of chassis components

The aim of the project is to elaborate a new approach for fatigue evaluation of lightweight materials in chassis components and wheel with the purpose to enable weight savings. It is an EU-funded project driven by a continent spanning consortium of companies, research institutes and universities.

A lot of research effort has been put in reducing the weight of BiW (Body in White) components in the automotive industry. These parts are usually so-called sprung mass. Hence, fatigue performance has not been of main interest. To translate this evolution to chassis parts and wheels, mainly of heavier vehicles, more effort must be put into the field of fatigue rather than crash performance. This usually means higher material thickness but also a possibility to use higher grade materials and materials of different types, such as FRP (Fibre-Reinforced Plastic). The fatigue properties of these materials, especially for higher thicknesses and after forming, is unknown to a large extent.

The goal of Fatigue4Light is to develop more precise simulation methods for evaluation of fatigue. These methods shall consider the variations and the chronology in the load history and how different forming operations affect the fatigue properties. The aim is also to evaluate statistical test methods which can be used to save time and resources. Accurate simulations enable diminishing of the margins of safety in product development which affect the weight of components positively. This also keeps the need for time consuming testing to a minimum, making new materials reaching the market faster.

The need for weight saving is particularly noticeable in the development of electrically assisted vehicles but the improved knowledge and insights the project might bring open the possibilities for wider use.

Contact

David Gustafsson

Gustafsson, David - PhD Student

Organisation: Solid Mechanics, Solid Mechanics, Department of Engineering Sciences and Mathematics
Phone: +46 (0)920 491928
Pär Jonsén

Jonsén, Pär - Professor and Head of Subject, Head of Division

Organisation: Solid Mechanics, Solid Mechanics, Department of Engineering Sciences and Mathematics
Phone: +46 (0)920 493460
Jörgen Kajberg

Kajberg, Jörgen - Associate Professor

Organisation: Solid Mechanics, Solid Mechanics, Department of Engineering Sciences and Mathematics
Phone: +46 (0)920 493474