TY - JOUR
T1 - Energy absorption assessment of bio-mimicked hybrid Al/PP sandwich tube
T2 - Experimental and Numerical Investigation
AU - Faraz, Moslem Rezaei
AU - Ahmadi, Hamed
AU - Liaghat, Gholamhossein
AU - Vahid, Samireh
AU - Razmkhah, Omid
AU - Tarafdar, Amirreza
PY - 2022/12
Y1 - 2022/12
N2 - This paper aims to investigate quasi-static and low-velocity impact responses of three manufactured bio-inspired hybrid multi-cell aluminum and polypropylene (Al/PP) sandwich tubes experimentally and numerically. The configurations are inspired by biological structures such as the horsetail, human tendons, and spongy bone. The crushing characteristics and axial collapse of sandwich tubes are discussed and compared with the quasi-static axial behavior of single Al and PP tubes. Further investigations, based on the accuracy of simulation results of the tested specimens, using the commercial nonlinear LS-DYNA software, on the effects of inner tubes diameter and material permutation are perceived through the full-factorial approach of FE parametric study. The results revealed that, packing the Al and PP tubes as hierarchical tubes generally improves the crushing patterns of individual hollow tubes. Also, specimens with aluminum and polypropylene cores have the highest amount of specific energy absorption under quasi-static and low-velocity impact loading, respectively. Finally, considering the interaction effects between the sandwich tube components, it can be seen that sandwiching single hollow tubes generally improves important crashworthiness indicators like peak crush force, crush force efficiency, energy absorption, and specific energy absorption when compared to the sum of these parameters in single hollow tubes.
AB - This paper aims to investigate quasi-static and low-velocity impact responses of three manufactured bio-inspired hybrid multi-cell aluminum and polypropylene (Al/PP) sandwich tubes experimentally and numerically. The configurations are inspired by biological structures such as the horsetail, human tendons, and spongy bone. The crushing characteristics and axial collapse of sandwich tubes are discussed and compared with the quasi-static axial behavior of single Al and PP tubes. Further investigations, based on the accuracy of simulation results of the tested specimens, using the commercial nonlinear LS-DYNA software, on the effects of inner tubes diameter and material permutation are perceived through the full-factorial approach of FE parametric study. The results revealed that, packing the Al and PP tubes as hierarchical tubes generally improves the crushing patterns of individual hollow tubes. Also, specimens with aluminum and polypropylene cores have the highest amount of specific energy absorption under quasi-static and low-velocity impact loading, respectively. Finally, considering the interaction effects between the sandwich tube components, it can be seen that sandwiching single hollow tubes generally improves important crashworthiness indicators like peak crush force, crush force efficiency, energy absorption, and specific energy absorption when compared to the sum of these parameters in single hollow tubes.
KW - Polypropylene
KW - Sandwich tube
KW - Bio-inspired
KW - Hybrid
KW - Energy absorber
KW - Interaction effect
UR - http://www.scopus.com/inward/record.url?scp=85138489160&partnerID=8YFLogxK
U2 - 10.1016/j.tws.2022.110116
DO - 10.1016/j.tws.2022.110116
M3 - Article
SN - 0263-8231
VL - 181
JO - Thin-Walled Structures
JF - Thin-Walled Structures
M1 - 110116
ER -