Modeling and multi-objective optimization of a bionic crash box with folding deformation
- 25 Downloads
Traditional crash box is unable to efficiently solve the problem of bending deformation during the collision process, which limits the energy absorption performance and crashworthiness. This paper introduces the structure of cactus into the design of crash box and attempts to redesign a new one with stable folding deformation. By imitating the cactus characteristic, the bionic crash box consists of two parts: one is the corrugated angular structure, and the other is its thickness functionally gradient distribution along the axial direction. Based on the sensitivity analysis, the parameters which have great influences on the energy absorption performance are selected as the design variables. The multi-objective optimization design is conducted based on response surface model and Latin hypercube design of experiment. Simulation results show that the bionic crash box can effectively weaken the damage to the autobody and improve the energy absorption performance through stable folding deformation.
KeywordsCrash box Folding deformation Cactus Bionic structure Thickness gradient
This work was support by the Fundamental Research Funds for the Central Universities (Grant No. NS2018013) and the Open Fund for Graduate Innovation Base of Nanjing University of Aeronautics and Astronautics (kfjj20180201).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- Chan M (2015) Global status report on road safety: time for action. Injury Prevention Journal of the International Society for Child & Adolescent Injury Prevention 15(4):286Google Scholar
- Desai D, Kadam (2016) Analysis and development of energy absorbing crash box. Int J Adv Res Innov Ideas In Educ 2(3):3776–3782Google Scholar
- Emami R, Moghadam ESA, Sohrabi M (2012) Crashworthiness optimization of thin walled cylindrical tubes with annular grooves under axial compression. Adv Mater Res 463-464Google Scholar
- Hao L, Xu T, Cui J, Tatsuo Y (2013) Multi-objective optimization for crashworthiness of crash box with parameterized inducing grooves. J Jilin Univ 43(1):39–44Google Scholar
- Kang S (2016) Bumper stay design for RCAR front low speed impact test RCAR. Trans KASE 24(2):191–197Google Scholar
- Kral J (2006) Yet another look at crash pulse analysis. SAE Technical PaperGoogle Scholar
- Li ML, Bi DS, Hao JK (2015) Automotive sheet metal SAPH440 and Q235 formability of comparative study. In: International conference on material science and application (ICMSA 2015), vol 3, pp 1027–1030Google Scholar
- Liu Y, Ding L (2016) A study of using different crash box types in automobile frontal collision. Int J Simul: Syst Sci Technol 17(38):21.1–21.5Google Scholar
- Omkar BG, Krishna SP, Prashant KT, Amit MW, Sagar PC (2018) Analysis and experimental validation of crash box for the energy absorption capacity. Res Rev: J Eng Technol 7(1):11–14Google Scholar
- Salehghaffari S, Tajdari M, Panahi M, Mokhtarnezhad F (2010) Attempts to improve absorption characteristics of circular metal tubes subjected to axial loading. Steel Constr 48(6):379–390Google Scholar
- Wu HQ, Xin Y (2008) True stress-strain curves used in finite element vehicle model. IEEE vehicle power and propulsion conference (VPPC), Harbin, ChinaGoogle Scholar
- Xu T, Liu N, Yu ZL, Xu TS, Zou M (2017) Crashworthiness design for bionic bumper structures inspired by cattail and bamboo. Appl Bionics Biomech 2017:1–9Google Scholar
- Yu Z, Li L, Yang J (2011) Frontal structure improvement on car based on RCAR impact test. Infats International Forum of Automotive Traffic Safety, ChangshaGoogle Scholar
- Yu JJ, Zou M, Xu SC, Zhang RR, Wang HX, Liu JT (2014) Structure and mechanical characteristic of cattle horns. J Mech Med Biol 12(6):140011Google Scholar