Deformation Pattern and Energy Absorption Characteristics of A Four-Tube Nested System Under Lateral and Oblique Loadings

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 deformation, asymmetric mode referred “overlap” and symmetric “side-by-side”, identified four-tubes systems. specific absorbed by inverted was larger than that three-tubes 20%. experiments also modelled using ABAQUSv6.13. Good correlations obtained for deformation corresponding crush force-displacement. validated model thereafter used parametric study investigate effectiveness under two boundary conditions; rotation specimen angles impact at angles.