基于正交试验法的汽车B柱结构优化设计
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摘要
针对通过优化B柱结构来改善整车轻量化的问题,对B柱结构和材料进行了优化设计。选取了上下板厚度和焊缝等因素,建立了L9正交试验表,将质量、最大侵入量、最大侵入速度作为目标,进行了B柱结构优化设计,得到了DP780 1.5 mm,DP590 1.2 mm,焊缝高度为455 mm的最优组合;进行了落锤试验台架分析,对比了优化前后B柱的抗撞性和轻量化效果。试验结果表明:优化设计后B柱的抗撞击性能略有提升,侵入量、侵入速度明显降低,承载则有所增加,同时实现了轻量化11%。
Aiming at the vehicle lightweight problem which improved by optimizing the B-column structure, B-pillar structure and materials were optimized. The thickness of the upper and lower plates and the welding line were selected as factors to establish the L9 orthogonal test table. The quality, maximum intrusion and maximum intrusion speed were taken as the targets, and the B-pillar structure optimization design was carried out to obtain the optimal combination that DP780 is 1.5 mm, DP590 is 1.2 mm, and the weld height is 455 mm. The bench analysis of the drop weight test was carried out to compare the crashworthiness and lightweight effect of the B-pillar before and after optimization. The results indicate that the impact resistance of the B-pillar is slightly improved after the optimized design. The intrusion volume, intrusion speed is significantly reduced and bearing capacity is increased. At the same time, lightweight design is reduced by 11%.
Aiming at the vehicle lightweight problem which improved by optimizing the B-column structure, B-pillar structure and materials were optimized. The thickness of the upper and lower plates and the welding line were selected as factors to establish the L9 orthogonal test table. The quality, maximum intrusion and maximum intrusion speed were taken as the targets, and the B-pillar structure optimization design was carried out to obtain the optimal combination that DP780 is 1.5 mm, DP590 is 1.2 mm, and the weld height is 455 mm. The bench analysis of the drop weight test was carried out to compare the crashworthiness and lightweight effect of the B-pillar before and after optimization. The results indicate that the impact resistance of the B-pillar is slightly improved after the optimized design. The intrusion volume, intrusion speed is significantly reduced and bearing capacity is increased. At the same time, lightweight design is reduced by 11%.
引文
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[8] 盈亮, 张富博, 戴明华,等. 基于侧碰的梯度性能热成形B柱抗撞性能优化[J]. 机械工程学报, 2017, 53(12):102-109.
[9] 刘昌业, 莫易敏, 梁永彬,等. 基于某微车顶压工况下B柱轻量化优化设计[J]. 武汉理工大学学报:交通科学与工程版, 2018(2):3-8.
[10] 曹立波, 刘衡, 武和全. 某混合动力汽车侧面碰撞中B柱可靠性优化设计[J]. 汽车安全与节能学报, 2016, 7(3):272-278.
[11] 张冬冬,张翼,秦宝荣,等.基于实验设计法的搁脚机构参数优化设计[J].轻工机械,2018,36(4):85-88.
[12] 单佳莹,平东良,钱怡.基于拓扑优化的折复机结构优化设计[J].轻工机械,2017,35(2):26-31.
[13] 张继游, 吴峻岭. 汽车侧面碰撞B柱结构参数化优化分析[J]. 上海汽车, 2018(1):52-55.
[2] LIU Q, LI Y, CAO L, et al. Structural design and global sensitivity analysis of the composite B-pillar with ply drop-off[J]. Structural & Multidisciplinary Optimization, 2018, 57(3):1-11.
[3] WEI X, GE R, SUN Y Q, et al. Investigation of Hot-Stamping to Manufacture an Automotive B-Pillar with Strength of 1500MPa and its Finite Element Analysis[C].The International Conference on Advanced High Strength Steel and Press Hardening 2016.Xi’an:[s.n.], 2016.
[4] PAN F, ZHU P, ZHANG Y. Metamodel-based lightweight design of B-pillar with TWB structure via support vector regression[J]. Computers & Structures, 2010, 88(1):36-44.
[5] BALLABIO A, BASHIR A, PAUL D J, et al. Analysis of Ge micro-cavities with in-plane tensile strains above 2 %[J]. Optics Express, 2016, 24(5):4365.
[6] 连胜利, 张向亮, 刘剑,等. 汽车侧面碰撞B柱结构优化设计[J]. 汽车实用技术, 2015(4):11-12.
[7] 鲁后国, 李铁柱, 阚洪贵. 基于仿真分析的汽车B柱侧面碰撞性能设计[J]. 机械设计与制造, 2017(7):220-222.
[8] 盈亮, 张富博, 戴明华,等. 基于侧碰的梯度性能热成形B柱抗撞性能优化[J]. 机械工程学报, 2017, 53(12):102-109.
[9] 刘昌业, 莫易敏, 梁永彬,等. 基于某微车顶压工况下B柱轻量化优化设计[J]. 武汉理工大学学报:交通科学与工程版, 2018(2):3-8.
[10] 曹立波, 刘衡, 武和全. 某混合动力汽车侧面碰撞中B柱可靠性优化设计[J]. 汽车安全与节能学报, 2016, 7(3):272-278.
[11] 张冬冬,张翼,秦宝荣,等.基于实验设计法的搁脚机构参数优化设计[J].轻工机械,2018,36(4):85-88.
[12] 单佳莹,平东良,钱怡.基于拓扑优化的折复机结构优化设计[J].轻工机械,2017,35(2):26-31.
[13] 张继游, 吴峻岭. 汽车侧面碰撞B柱结构参数化优化分析[J]. 上海汽车, 2018(1):52-55.