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| Multi-objective optimization design of new median guardrail |
| LU Jijian, LEI Zhengbao |
| Large-Scale Structural Impact Lab, Changsha University of Science and Technology, Changsha 410114, China |
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Abstract In view of the tire snagging phenomenon of the widely used median guardrail, a new median guardrail is designed. The crash safety of the new median guardrail is evaluated by explicit nonlinear finite element simulation. The dynamic responses of the barrier after collision, such as occupant impact velocity (v), occupant impact velocity (a), exit angle (EA), vehicle departure distance (d) and maximum lateral displacement (MD), are analyzed. Considering comprehensively, the acceleration in y direction of occupant impact (a_y) and vehicle departure distance (d) are selected as the objective functions, and the RBF surrogate model is constructed to reduce the calculation cost. Finally, multi-objective genetic algorithm is used to optimize and obtain the best design parameters of guardrail. Under the impact of small bus, medium bus and large truck, the new median guardrail shows good guidance ability. The finite element simulation results show that the guardrail can effectively prevent the tire snagging phenomenon, the departure distance only 2.06m, and the acceleration in the y direction of occupant collision is 118.2 m/s2, meeting the SB level protection requirements.
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Received: 21 April 2022
Published: 15 July 2023
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[1] Ren Z , Vesenjak M . Computational and experimental crash analysis of the road safety barrier[J]. Engineering Failure Analysis, 2005, 12(6):963-973.
[2] Davids, WG, Botting, et al. Development and structural testing of a composite-reinforced timber highway guardrail[J]. CONSTR BUILD MATER, 2006, 2006,20(9)(-):733-743.
[3] Faller R K, Sicking D L, Bielenberg R W, et al. Performance of steel-post, W-beam guardrail systems[J]. Transportation research record, 2007, 2025(1): 18-33.
[4] Sicking D L, Reid J D, Rohde J R. Development of the midwest guardrail system[J]. Transportation research record, 2002, 1797(1): 44-52.
[5] 雷正保, 李丽红, 雷沐羲,等. 新型柔性护栏碰撞安全性仿真分析及实车验证[J]. 振动与冲击, 2013, 32(22):4.
LEI Zhengbao, LI Lihong, CHEN Chenchen, te al. Simulation analysis and real car vaildation for crashworthiness of a new flexible safe fence [J]. Journal of vibration and shock, 2013, 32(22): 28-31.
[6] Yin H F, Xiao Y Y, Wen G , et al. Design optimization of a new W-beam guardrail for enhanced highway safety performance[J]. Advances in Engineering Software, 2017:S0965997817302144.
[7] 赵坤民, 崔娜杰, 赵德望,等. 汽车与护栏碰撞立柱绊阻机理及防止措施[J]. 汽车工程, 2021, 43(5):8.
Zhao K M, Cui N J, Zhao D W, et al. Mechanism and Prevention Measures of Post Stumbling Obstruction in Car-Guardrail Collision[J]. Automotive Engineering, 2021, 43(5):8.
[8] Hou S , Wei T , Zheng Y , et al. Optimization design of corrugated beam guardrail based on RBF-MQ surrogate model and collision safety consideration[J]. Advances in Engineering Software, 2014, 78(dec.):28-40.
[9] Yang J , Xu G , Cai C S , et al. Crash Performance Evaluation of a New Movable Median Guardrail on Highways[J]. Engineering Structures, 2019, 182(MAR.1):459-472.
[10] Wang Q , Fang H , Yin H . Reliability analysis of concrete barriers under vehicular crashes using augmented RBFs[J]. Structural and Multidisciplinary Optimization, 2020, 61(10).
[11] Houssein E H , Hosney M E , Oliva D , et al. A novel hybrid Harris hawks optimization and support vector machines for drug design and discovery[J]. Computers & Chemical Engineering, 2020, 133(Feb.2):106656.1-106656.16.
[12] Ozcanan S , Osman A . Minimization of Accident Severity Index in concrete barrier designs using an ensemble of radial basis function metamodel-based optimization[J]. Optimization and Engineering, 2020(6).
[13] 公路护栏安全性能评价标准[M]. 人民交通出版社, 2013.
[14] Lei, Z., Sun, H., Tu, X., Xun, Z., & Zhou, W. (2022). Topology optimization for crashworthiness of cyclic symmetric isosceles under dynamic response constraints. International Journal of Crashworthiness, 27(1), 181-192.
[15] Ozcanan S, Atahan A. Radial basis function surrogate model-based optimization of guardrail post embedment depth in different soil conditions [J]. Proceedings of the Institution of Mechanical Engineers Journal of Automobile Engineering, 2019, 234(2-3):095440701984854.
[16] Neves, R. R. , et al. "Performance of some basic types of road barriers subjected to the collision of a light vehicle." Journal of the Brazilian Society of Mechanical Sciences and Engineering 40.6(2018):274.
[17] 聂昕, 黄鹏冲, 陈涛,等. 基于耐撞性拓扑优化的汽车关键安全件设计[J]. 中国机械工程, 2013, 24(23):6.
NIE Xin, HUANG Pengchong, CHEN Tao. Topology optimization of automotive key safety component design based on crashworthiness [J]. Journal of Chinese Mechanical Engineering, 2013, 24(23):6.
[18] Lee, J. , et al. "Numerical Simulation on Concrete Median Barrier for Reducing Concrete Fragment Under Harsh Impact Loading of a 25-ton Truck." Journal of Engineering Materials & Technology 139.2(2017):021015.
[19] Cao, R. , et al. "Numerical Studies on Concrete Barriers Subject to MASH Truck Impact." Journal of Bridge Engineering 25.7(2020):04020035 |
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