Abstract
This study innovatively combines Fourier curves with circular tube design and proposes a novel corrugated multi-cellular tube structure (NCMTS), aiming to improve crashworthiness. The accuracy of the finite element model was validated through axial quasi-static compression tests. The influence mechanism of different structural parameter combinations on the energy absorption capacity of NCMTS was further investigated. The results reveal that the EA of NCMTS increases monotonically with rising of parameter ru , with a notable acceleration in growth rate as parameter Rc is elevated. Notably, the combination of larger values of ru and Rc , and tout and tc can significantly improve the crashworthiness performance. Moreover, appropriately increasing C 1 and C can increase the EA of NCMTS by approximately 50%. Through multi-objective optimization analysis utilizing the global response surface method, the optimal structural parameters for NCMTS were identified: at Rc = 0.68, C = −0.57, C 1 = 0.16, tout = 2.0 mm, tc = 0.68, the EA, SEA and IPCF reached 7.02 kJ, 15.33 kJ/kg and 400 kN respectively. This study offers valuable guidance for the design and optimization of high-performance collision energy-absorbing structures.
Published Version
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