Abstract The present research introduces a new configuration of thin-walled nested tube structure as possible energy absorber subjected to lateral compression. nested-tube structures were configured in system comprising four tubes arranged different ways. All the systems quasi-statically compressed direction on universal mechanical tester obtain their absorption characteristics. Two modes defor...

Crashworthiness studies are in high demand for designing transportation systems. Energy absorption capability in vehicle collisions is an important parameter for the development of passive safety systems dealing with the protection of passengers and cargo departments in the event of an accident. Protective structures, which contribute significantly to the crashworthiness capability of automotiv...

Thin-walled tubes are widely used as energy absorbers due to their high crashworthiness performance. This study aims evaluate the effect of plastic forming history carried out for thickness optimization on performance thin-walled square tube (TWST). Within scope study, a series numerical analyzes were conducted TWST using commercial finite element (FE) software. In order determine individual op...

Conventional endotracheal tubes have high intrinsic resistive properties due to their high outer-to-inner diameter ratio. This has significant disadvantages in the treatment of the small neonatal or pediatric patient as work of breathing increases with decreasing internal radius. Diagnostic and therapeutic procedures, including suctioning, may be very difficult in patients with small endotrache...

Developing an innovative protective structure with excellent energy absorption performance is a continuous research effort. The emerging additive manufacturing techniques allow fabricating structures complex geometrical shapes which have the potential to yield unprecedented properties. Accordingly, in this paper, crush and behaviour of new designs, namely Concave Tubes (CTs) featuring inwardly ...