A comparative study on empty and foam-filled hybrid material double-hat beams under lateral impact
作者： Chang Qi , Yong Sun , Shu Yang
DOI: 10.1016/J.TWS.2018.04.018
关键词: Multi-objective optimization 、 Deformation (meteorology) 、 Position (vector) 、 Bending moment 、 Structural engineering 、 Materials science 、 Crashworthiness 、 Particle swarm optimization 、 Beam (structure) 、 Bending
摘要: Abstract In previous research, an innovative hybrid material double-hat thin-walled beam has been proposed for vehicle bumper system, which demonstrated great potentials improved pedestrian safety and reduced weight. this work, we have used aluminum foam to fill the further its application in bodies with increased bending resistance energy absorption efficiency. Bending behaviors of both empty foam-filled beams were numerically investigated using validated LS-DYNA models. Three representative loading positions including mid-span, 50 mm 100 mm offsets from mid-span simulated reveal effect load position uncertainty. It was found that filler could increase specific (SEA) by more than 30% double moment (Mb) changing deformation pattern. Moreover, shows robust crashworthiness performance against variation. Using radial basis function (RBF) metamodels, multi-objective design optimization (MDO) problems formulated filled maximize SEA Mb minimize initial peak force (Fip). The particle swarm (MOPSO) seek Pareto fronts MDO problems. results show much broader space terms Fip, high-energy crash applications. also front varies different either or beam. Including multiple achieve a Appropriate weighting factors should be chosen yield realistic designs beams.
sci-hub.se 参考文章(60)
Xiaojiang Lv, Xianguang Gu, Liangguo He, Dayong Zhou, Weiguo Liu, Reliability design optimization of vehicle front-end structure for pedestrian lower extremity protection under multiple impact cases Thin-walled Structures. ,vol. 94, pp. 500- 511 ,(2015) , 10.1016/J.TWS.2015.05.014
Jianguang Fang, Yunkai Gao, Guangyong Sun, Na Qiu, Qing Li, On design of multi-cell tubes under axial and oblique impact loads Thin-Walled Structures. ,vol. 95, pp. 115- 126 ,(2015) , 10.1016/J.TWS.2015.07.002
Hanfeng Yin, Youye Xiao, Guilin Wen, Qixiang Qing, Xin Wu, Crushing analysis and multi-objective optimization design for bionic thin-walled structure Materials & Design. ,vol. 87, pp. 825- 834 ,(2015) , 10.1016/J.MATDES.2015.08.095
Chang Qi, Shu Yang, Fangliang Dong, Crushing analysis and multiobjective crashworthiness optimization of tapered square tubes under oblique impact loading Thin-Walled Structures. ,vol. 59, pp. 103- 119 ,(2012) , 10.1016/J.TWS.2012.05.008
Xiaohong Chen, Yang Wang, Ming Gong, Yuanming Xia, Dynamic behavior of SUS304 stainless steel at elevated temperatures Journal of Materials Science. ,vol. 39, pp. 4869- 4875 ,(2004) , 10.1023/B:JMSC.0000035327.55210.99
Hasan Gedikli, Numerical investigation of axial crushing behavior of a tailor welded tube Materials & Design. ,vol. 44, pp. 587- 595 ,(2013) , 10.1016/J.MATDES.2012.08.050
H.R. Zarei, M. Kröger, Bending behavior of empty and foam-filled beams: Structural optimization International Journal of Impact Engineering. ,vol. 35, pp. 521- 529 ,(2008) , 10.1016/J.IJIMPENG.2007.05.003
Z. Ahmad, D.P. Thambiratnam, A.C.C. Tan, Dynamic energy absorption characteristics of foam-filled conical tubes under oblique impact loading International Journal of Impact Engineering. ,vol. 37, pp. 475- 488 ,(2010) , 10.1016/J.IJIMPENG.2009.11.010
Guangyong Sun, Xuanyi Tian, Jianguang Fang, Fengxiang Xu, Guangyao Li, Xiaodong Huang, Dynamical bending analysis and optimization design for functionally graded thickness (FGT) tube International Journal of Impact Engineering. ,vol. 78, pp. 128- 137 ,(2015) , 10.1016/J.IJIMPENG.2014.12.007
Yunjiao Zhou, Fengchong Lan, Jiqing Chen, Crashworthiness research on S-shaped front rails made of steel–aluminum hybrid materials Thin-walled Structures. ,vol. 49, pp. 291- 297 ,(2011) , 10.1016/J.TWS.2010.10.007