Numerical study of axially crushed cylindrical tubes with corrugated surface

Numerical crushing analysis of aluminum foam-filled corrugated single- and double-circular tubes subjected to axial impact loading

“…However, tube with a¼ 0.5 mm showed an initial peak force as a result of having more straight axial geometry. When corrugation amplitude was increased from 0.5 mm to 2 and 3 mm, mean force decreased significantly ( $34% for a¼ 2 mm and $ 51% for a ¼3 mm) as also reported by Chen and Ozaki [25]. This can be attributed to increase in the curvature of the corrugation and transition of diamond collapse mode to concertina progressive collapse mode through corrugations with increasing corrugation amplitude as depicted in Fig.…”

“…In last decades, to improve the crashworthiness of thin-walled tubes, several modification methods have been developed and proposed. Among those, filling tubes with different cellular materials or structures including metallic foams [4][5][6][7][8][9][10], synthetic foams [11][12][13][14][15], natural cellular materials [16] and honeycombs [17], multi-tube usage [17][18][19][20][21][22] and generating corrugated/grooved surfaces on the tubes [13,[23][24][25][26][27][28][29][30] were found to be very effective to increase energy absorption capacity and structure safety.…”

“…It was also determined that foam-filling increased the structure effectiveness and energy absorption. Chen and Ozaki [25] investigated the crushing behavior of corrugated circular tubes subjected to axial loading. Experiments revealed that tubes with short corrugation length and high corrugation amplitude showed progressive folding and have lower crushing stresses while low corrugation length and low amplitude led to generate simultaneous folds which increased the crushing stresses.…”

Controllable energy absorption of double sided corrugated tubes under axial crushing

“…Moreover, geometric modification from a straight tube (S-tube) to a single-sided radial corrugated tube (SSC) has shown a desirable smooth load-displacement behavior with minimal fluctuations [40][41][42][43][44][45][46][47]. The introduction of corrugations helped in directing the crushing energy to the corrugation trough.…”

Axial-impact buckling modes and energy absorption properties of thin-walled corrugated tubes with sinusoidal patterns

“…Acar et al [13] investigated the effects of tapering and introducing axisymmetric indentations on the crash performances of thinwalled tubes. Numerical simulations conducted by Chen et al [14] showed that the deformation modes corresponding to corrugations can be classified into axisymmetric and asymmetric modes. In addition, Chen et al [15] studied the circumferential strain concentrations in cylindrical and square tubes with corrugated surfaces under axial compression.…”