Energy Absorption of Structures and Materials

Triaxial compression of aluminium foams

“…Our previous study [17,18] indicated that the compressive strength of CYMAT foams is less sensitive to the strain rate and the density of foam specimen has a greater effect on the strength. The uniaxial compressive strength for each type of foam, as listed in Table 1, was taken as the average value of yield strength from [17] and current study.…”

“…Compressive tests of CYMAT foams with nominal relative densities of 5%, 10%, 15%, 17% and 20% at various nominal strain rates ranged from 10 À3 to 10 +1 s À1 were conducted in our previous study [17,18]. One additional set of compressive tests at a nominal strain rate of 10 À4 s À1 was performed here.…”

Deformation and failure of blast-loaded metallic sandwich panels—Experimental investigations

“…In recent years, a number of cellular solids, such as metallic foams and honeycombs, have been developed for uses as the cores of sandwich structures for application in blast-resistant construction. Their cellular microstructure endows them with the ability to undergo large plastic deformation at nearly constant nominal stress, and thus they can dissipate considerable energy before collapsing to a more stable configuration or fracture [1][2][3]. A deep insight into deformation/failure behaviour of sandwich structures under blast loading will help to design these structures with significantly enhanced energy-absorbing and blast-resistant performance.…”

The dynamic response of sandwich beams with open-cell metal foam cores

“…Sandwich structure with metal foam core is of current academic and industrial interest due to its superior properties like high specific strength, high specific stiffness and high energy absorption ability, etc. In recent years, considerable studies have been conducted focusing on constitutive relationship of foam materials [1][2][3] and failure mechanism of sandwich structures [4][5][6]. While Fleck and Deshpande [7] developed an analytical model for the shock resistance of clamped sandwich beams, Xue and Hutchinson [8] conducted Finite Element simulations to investigate the response of sandwich beams subjected to impulse loadings.…”