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LIGHTFe - High performance lightweight steel sandwich materials

Published: 24 January 2017

In order to meet the long term goals regarding reduction of greenhouse gases emissions in road transport new material solutions are needed to reduce weight. In LightFe two steel sandwich concepts with densities 30% lower than the density for a solid steel will be developed. The multi grade material is processed to components by press hardening. The sandwich materials shall fulfil the high demands from the truck and automotive industry regarding stiffness, crashworthiness and fatigue. Further, the sandwich concepts will be investigated for armoured vehicle for future development of lightweight blast mitigation protection systems. Cost efficient virtual methods in shape of finite element method for development and design of sandwich solutions will be established.

In order to achieve reasonable computational times, element and material descriptions (homogenization), resembling the properties of a sandwich construction, are needed. For validating the FE-methodology and to show good properties regarding stiffness, crashworthiness, fatigue or blast mitigation, demonstrators will be made. The developed simulation methodologies will be implemented at the companies and the design engineers will be trained in the new technologies through workshops. The project is funded by Vinnova – LIGHTer and is run in collaboration with Swerea MEFOS, Gestamp Hardtech, Scania AB, BAE System Hägglunds AB and SSAB.