Impact dynamics of metal foam shells for motorcycle helmets: Experiments & numerical modeling

Mimicking the loading adaptation of bone microstructure with aluminum foams

“…Eventually, to have one single elastic stiffness for all the FE-models, a mean calibrated elastic stiffness, equal to C m = 5.01 GPa, was chosen for the solid phase in the model. This is in line with the results of [50], which also did FEM simulations of compression tests. Based on Eq.…”

“…They also have wide applica-tions as load-bearing parts in engineering structures for vehicles, where lightweight components with high energy absorption are needed, i.e. helmets, car bumpers [2,50], and so forth. Closed cell aluminum foams have several similarities with cancellous bones, though bones have open cells.…”

Dynamic compressive loading of expanded perlite/aluminum syntactic foam

“…However, in applications as energy absorbers (i.e. in motorcycle helmets [3] or car seat components [4]) they are subjected to distinctly higher strain rates that may affect their mechanical response. The degree to which the strain rate influences the mechanical properties of aluminum foams depends on the particular alloy, the foam structure i.e.…”

New composite liners for energy absorption purposes

“…The material model used for the EPS was successfully used by several authors [22][23][24][25] to model its compressive mechanical behaviour. Fig.…”