Fibre composites are more weight efficient than metals since they have much better structural properties per unit weigh. This can enable significant weight reductions of cars. But their deformation process is complex, with many interacting failure mechanisms, which makes it difficult to model. Research results show however that 3D-reinforced composites show a more ductile deformation response, similar to metals but with as much as a threefold capability to absorb energy. These composites are therefore interesting both because they can be a more weight efficient energy absorber in crash and that their deformation response is considered to be simpler to model compared to conventional composites. Here, we aim to both characterise the failure process of this material and, based on this, to develop a reliable material model for its progressive failure response. Both aspects are enablers for a faster development of vehicles with lower weight and less negative environmental impact.
Docent vid Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Funding Chalmers participation during 2016–2019
Areas of Advance