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The aim of the research is the analysis of thin-walled aluminum profiles with embossed crush initiator. Samples
with square cross-section loaded dynamically were studied until the complete loss of velocity by the tup. The nu-
merical analyses were based on an elastic-plastic material model. The material properties of AA-6063 aluminum
were derived from own tests performed on a tensile machine. The analyses were conducted using the numerical
method (Abaqus CAE). Using a dynamic testing machine, the obtained numerical data were verified on the basis of
models showing the best improvement in crush efficiency indicators. In the experimental study, high-speed camera
images were used to identify the forming plastic hinges. Based on the obtained results of experimental and numeri-
cal analysis, crush efficiency indicators were determined and compared. It was determined that the use of a passive
energy absorber increases the efficiency of the crushing force by around 50%, in addition, the correct location of
the crush initiator allows to gain 15%. The results of the study showed that proper placement of the crush initiator
decrease Peak Crushing Force (PCF) while increasing mean crushing force (MCF).
