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汽车安全与节能学报 ›› 2022, Vol. 13 ›› Issue (2): 242-249.DOI: 10.3969/j.issn.1674-8484.2022.02.003

• 汽车安全 • 上一篇    下一篇

两级式半主动磁流变抗冲击座椅悬架系统设计与仿真

亓昌1,3(), 徐博1, 余洁1,*(), 杨姝1,2,3,*()   

  1. 1.大连理工大学 汽车工程学院,大连 116024,中国
    2.汽车安全与节能国家重点实验室(清华大学),北京,100084,中国
    3.大连理工大学宁波研究院,宁波,315016,中国
  • 收稿日期:2021-08-04 修回日期:2021-12-12 出版日期:2022-06-30 发布日期:2022-07-01
  • 通讯作者: 余洁,杨姝
  • 作者简介:*杨姝,副教授。E-mail: yangshu@dlut.edu.cn
    亓昌(1978—),男(汉),陕西,教授。E-mail: qichang@dlut.edu.cn
    徐博(1995—),男(汉),浙江,硕士研究生。E-mail: 363836064@qq.com
  • 基金资助:
    汽车安全与节能国家重点实验室开放基金(KF2003);中央高校基本科研业务费资助项目(DUT20 LAB132);中央高校基本科研业务费资助项目(DUT21GF203)

Design and simulation of a two-stage semi-active magneto-rheological anti-impact seat suspension system

QI Chang1,3(), XU Bo1, YU Jie1,*(), YANG Shu1,2,3,*()   

  1. 1. School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China
    2. State Key Laboratory of Automobile Safety and Energy Conservation (Tsinghua University), Beijing 100084, China
    3. Ningbo Research Institute, Dalian University of Technology, Ningbo 315016, China
  • Received:2021-08-04 Revised:2021-12-12 Online:2022-06-30 Published:2022-07-01
  • Contact: YU Jie,YANG Shu

摘要:

为在爆炸冲击下保护特种车辆内乘员安全,利用自建的四自由度集中参数人体模型,提出了一种两级式半主动抗冲击软着陆控制座椅概念设计。通过垂向冲击动力学仿真,验证了模型的有效性;基于磁流变阻尼器Hysteretic模型,建立了阻尼器力学模型;通过振动测试台,辨识了阻尼器力学模型相关系数;用自建的两级式半主动座椅悬架系统仿真模型,研究了抗冲击座椅的抗冲击和减振性能。结果表明:相比原有设计,本文座椅可使乘员头部加速度峰值降低42.5%;使最大有效幅值传递率下降了19.4%。从而,提高了舒适性,降低了乘员头部损伤风险,满足抗爆性能要求。

关键词: 汽车主动安全, 抗冲击座椅, 两级悬架系统, 磁流变, 软着陆控制

Abstract:

A conceptual design was proposed for a seat with two-stage semi-active impact-resistant soft-landing control by using a four-degree-of-freedom lumped-parameter human body model established by authors to protect the occupants in special vehicles under explosion impacts. The validity of the model was verified through vertical impact dynamics simulation; A damper mechanical model was established based on a magnetorheological damper Hysteretic model; The correlation coefficients of the damper mechanical model were identified on a vibration test bench. The shock resistances and the vibration damping performances of the seat were investigate by a simulation model of the two-stage semi-active seat suspension system. The results show that compared with the original design, the seat designed by authors reduces the occupant’s head peak acceleration by 42.5%, with reducing the maximum effective amplitude transfer rate of the seat by 19.4%. Therefore, the seat improves comfort, reduces the occupant head injury risk, and meets the anti-explosion performance requirements.

Key words: vehicle active safety, anti-impact seats, two-stage suspension system, magnetorheological, soft-landing control

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