汽车工程 ›› 2022, Vol. 44 ›› Issue (5): 778-788.doi: 10.19562/j.chinasae.qcgc.2022.05.016

所属专题: 车身设计&轻量化&安全专题2022年

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基于结构轻量化的城市客车车身生命周期评价

王童1,杜轶群2,陈轶嵩1(),韩日美3   

  1. 1.长安大学汽车学院,西安  710064
    2.长安大学国际教育学院,西安  710064
    3.西安轨道交通集团,西安  710021
  • 收稿日期:2021-11-10 修回日期:2021-12-18 出版日期:2022-05-25 发布日期:2022-05-27
  • 通讯作者: 陈轶嵩 E-mail:chenyisong_1988@163.com
  • 基金资助:
    国家重点研发计划(SQ2021YFE011519);国家自然科学基金(71173072);陕西省重点产业创新链项目(2020ZDLGY16-08);陕西省青年科技新星人才支持计划项目(S2021-0-ZC-XXXM-0059)

Life Cycle Assessment of City Bus Body Based on Structural Lightweighting

Tong Wang1,Yiqun Du2,Yisong Chen1(),Rimei Han3   

  1. 1.School of Automobile,Chang’an University,Xi’an  710064
    2.International Education School,Chang’an University,Xi’an  710064
    3.Xi’an Rail Transit Group,Xi’an  710021
  • Received:2021-11-10 Revised:2021-12-18 Online:2022-05-25 Published:2022-05-27
  • Contact: Yisong Chen E-mail:chenyisong_1988@163.com

摘要:

为某12 m全承载混合动力城市客车建立车身有限元模型,通过强度、刚度、模态分析、结构轻量化和生命周期评价,分析车身结构优化对整车节能减排效果的影响。结果表明,与原车身骨架相比,结构优化后车身骨架质量减轻了52.5 kg,弯曲与极限扭转两种工况下均满足强度、刚度要求,且具有良好的固有振动特性。就全生命周期而言,轻量化后矿产资源消耗减少了0.4E04 kg Sb-eq.,化石能源消耗减少0.7E04 MJ,综合环境影响值减少0.42E11,减低率分别为3.81%、4.46%和4.56%。

关键词: 客车, 有限元分析, 模态分析, 轻量化分析, 生命周期评价

Abstract:

The finite element model for a 12 m monocoque hybrid power city bus is created and the effects of body structure optimization on the energy-saving and emission reduction of the bus are analyzed through strength, stiffness and modal analyses as well as structural lightweighting and life cycle assessment. The results show that compared with original body skeleton, the mass of structurally optimized body skeleton reduces by 52.5 kg and both the strength and stiffness meet the requirements under bending and ultimate torsion conditions with a good natural vibration characteristic. As for the full life cycle, after lightweghting the mining resource consumption reduces by 0.4E04kg Sb-eq., fossil energy resources consumption reduces by 0.7E04MJ and the overall environment influence factor reduces by 0.42E11, equivalent to a reduction rate of 3.81%, 4.46% and 4.56% respectively.

Key words: city bus, finite element analysis, modal analysis, lightweight analysis, life cycle assessment