• crash-box
• Crashworthiness
• impatto
• sicurezza passiva
• simulazione numerica

The main field of interest of this PhD has concerned the study of the behaviour
of particular structures (in metal and composite material) subordinates to static
and dynamic loads with the aim to pass specific crash-tests. The research activity
has had two main topics: the analytical study of the crash by means of
the numerical simulation of simple models and the comparison between the numerical
results and the experimental data. After a bibliographical search on the
topic of the crash to focus on the general aspects and to know the state of the
art of this problematic one, the attention has been focused on the learning of
the Finite Element Method (FEM), in linear field and not, and on its operation
in particular codes of calculation. Being the phenomenon of crash dynamic and
strongly not linear, it has been studied combining the software ANSYS with the
wide used code LS-DYNA. Using therefore ANSYS like pre and post-processor
and LS-DYNA for the solution, have been done simulations of the collapse process
of tubes of different shape in order to approach itself the case of crash-boxes
for race car prototype.