Axial crushing behaviors of multi-cell tubes with triangular lattices

Relative merits of conical tubes with graded thickness subjected to oblique impact loads

“…The responses of empty and foam-filled conical tubes under oblique loads were also investigated by Qi and Yang [16] and the empty tubes was reported to outperform foamfilled tubes in terms of specific energy absorption (SEA). Recently, multi-cells were found to be a type of highly efficient energy absorbers [17][18][19][20][21][22][23][24][25] and Qi et al [26] conducted numerical analysis and multi-objective optimization of tapered multi-cell square tubes under oblique loading. The tapered multi-cells were reported to show the best crashworthiness performance when compared to tapered single-cell, straight single-cell or multi-cell tubes.…”

Investigation of the Energy Absorption Characteristics of Metallic Tubes with Curvy Stiffeners under Dynamic Axial Crushing

“…An ideal energy absorber should exhibit long, flat load-displacement curve in which the peak force which is responsible for damage or injury, is kept below a threshold value. To achieve such a response with improved crashworthiness parameters, researchers adopted different method in tubes such as foam fillers (Hanssen et al, 2000), windows (Song et al, 2013), grooves (Zhang and Huh, 2009;Salehghaffari et al, 2010), gradient thickness features (Sun et al, 2016;Hui and Xiong, 2016), axial stacking of tubes (Ronchietto et al, 2009) and multi-cell strategies (Hong et al, 2014;Hou et al, 2008;Zhang, 2013, 2014). Thin-walled tubes can dissipate the impact energy under different mechanism such as fracture, splitting, bending, tension, shear and plastic deformation.…”

Frusta structure designing to improve quasi-static axial crushing performances of triangular tubes

“…Lateral crushing behaviors of triangular tubes were revealed by experiments (Wang et al, 2015;Fan et al, 2015). Crushing behaviors of multi-cell triangular tubes were studied by Tran et al (2014) and Hong et al (2014).…”