Experimental quasi-static axial crushing of top-hat and double-hat thin-walled sections

Comparison of the energy absorption capability of crash boxes assembled by spot-weld and continuous joining techniques

“…Quasi-static [16,26] Impact [26] Fay-Suthurst, dynamic [5] Peroni et al, quasi-static [29] Peroni et al, dynamic [29] Current model, quasi-static Current model, dynamic configuration ( Fig. 4 on the right), which is in turn lighter than the classical top-hat ( Fig.…”

“…[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. The progressive folding of such structures, produced by axial loads, is a very efficient collapse mode: an example is shown in Fig.…”

“…The k constant and the exponents n, p, q, r, s have been evaluated by means of a least square regression of a large number of experimental data from the literature [5,16,26,29]. A normalised load parameter can be defined as: This normalised load parameter is used to plot the experimental data in Fig.…”

Partition energy absorption of axially crushed aluminum foam-filled hat sections

“…When measured from the collapsed specimens, d eff is about 0.75 times of folding wavelength in the empty sections, whereas it is 0.68-0.71 times of folding wavelength in the filled sections. White and Jones (1999a) have summarized the collapse modes of top-hat and double-hat structures. The basic collapse modes observed in the current study are in accordance with those by White and Jones (1999a,b).…”

Impact behaviour of bonded built-up beams: experimental results

“…The expected structural behaviour of a thin-walled beam submitted to an axial impact load is a progressive collapse characterised by the regular progressive formation of plastic folds [4,5].…”