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The head protection of cyclist in vehicle collisions

Research Project

Project/Area Number 25420012
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionNagoya University

Principal Investigator

Mizuno Koji  名古屋大学, 工学(系)研究科(研究院), 教授 (80335075)

Co-Investigator(Kenkyū-buntansha) 平林 智子  名古屋大学, 工学(系)研究科(研究院), 助教 (30566716)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords生体力学 / 傷害バイオメカニクス / 自動車工学 / 交通事故 / 自転車乗員保護 / インパクトバイオメカニクス / 自転車 / 交通外傷
Outline of Final Research Achievements

Finite element analyses of car-cyclist collisions were conducted. When the knee position of the cyclist was higher than the hood leading edge, the hood leading edge contacted the cyclist leg, and the pelvis slid over the hood top and the wrap-around distance of the cyclist's head was large. When the cyclist's knee was lower than the hood leading edge, the hood leading edge contacted the cyclist thigh, and the cyclist rotated with the femur as the pivot point about the hood leading edge.
Accident analyses show that the head injury risk is high in impacts with stiff A-pillars. The headform impact tests were conducted using the pedestrian headform. In the A-pillar impact at 35 km/h, the HIC reduced substantially from without helmet (4815) to with helmet (3000) though it was far above the injury acceptance level (1000). From a simple model of the head acceleration in the A-pillar impact, it was confirmed that a deforming A-pillar could reduce the HIC of the head with helmets.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (12 results)

All 2016 2015 2014 2013

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results) Presentation (7 results)

  • [Journal Article] The influence of lower extremity postures on kinematics and injuries of cyclists in vehicle side collisions2016

    • Author(s)
      Koji Mizuno, Hidefumi Yamada, Hiroshi Mizuguchi, Daisuke Ito, Yong Han, Masahito Hitosugi
    • Journal Title

      Traffic Injury and Prevention

      Volume: 00 Pages: 00-00

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 自動車衝突時の下肢姿勢違いにおける自転車乗員の挙動・傷害への影響2016

    • Author(s)
      水口浩爾,伊藤大輔,水野幸治
    • Journal Title

      自動車技術会論文集

      Volume: 47 Pages: 171-176

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Aピラー衝突における自転車ヘルメットによる頭部保護2015

    • Author(s)
      伊藤大輔,笈田桂治,小林吾一,水野幸治,吉田良一
    • Journal Title

      自動車技術会論文集

      Volume: 46 Pages: 455-460

    • NAID

      130006319532

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Adult headform impact tests of three Japanese child bicycle helmets into a vehicle2014

    • Author(s)
      Mizuno, K., Ito, D., Yoshida, R., Masuda, H., Okada, H., Nomura, M., Fujii, C.
    • Journal Title

      Accident Analysis and Prevention

      Volume: 73 Pages: 359-372

    • DOI

      10.1016/j.aap.2014.09.018

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Dynamic response and injury risk of pedestrians in mini car collision2013

    • Author(s)
      Yong, H., Mizuno, K., Matsui, Y.
    • Journal Title

      Journal of Automotive Safety and Energy

      Volume: 4 Pages: 244-249

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 愛知県における歩行者および自動車乗員の交通事故の分析2016

    • Author(s)
      早川航生,水野幸治,伊藤大輔
    • Organizer
      自動車技術会春期講演会
    • Place of Presentation
      横浜
    • Year and Date
      2016-05-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] 自動車衝突時の下肢姿勢違いにおける自転車乗員の挙動・ 傷害への影響2015

    • Author(s)
      水口浩爾,伊藤大輔,水野幸治
    • Organizer
      自動車技術春期講演会
    • Place of Presentation
      北九州
    • Year and Date
      2015-10-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] Aピラー衝突時における自転車乗員用ヘルメットの衝撃保護性能の研究2015

    • Author(s)
      笈田桂治,水野幸治,伊藤大輔, 小林吾一
    • Organizer
      日本機械学会バイオエンジニアリング講演会
    • Place of Presentation
      新潟
    • Year and Date
      2015-01-09 – 2015-01-10
    • Related Report
      2014 Research-status Report
  • [Presentation] Finite element analysis of kinematic behavior of cyclist and Performance of cyclist helmet for human head injury in vehicle-to-cyclist collision2014

    • Author(s)
      Ito D., Yamada H., Oida K., Mizuno K.
    • Organizer
      International IRCOBI Conference on the Biomechanics of Impact
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      2014-09-10 – 2014-09-12
    • Related Report
      2014 Research-status Report
  • [Presentation] Head protection with cyclist helmet in impact against vehicle A-pillar2014

    • Author(s)
      Mizuno, K., Ito, D., Oida, K., Kobayashi, G., Han, Y.
    • Organizer
      International Crashworthiness Conference
    • Place of Presentation
      Kuching, Malaysia
    • Year and Date
      2014-08-25 – 2014-08-28
    • Related Report
      2014 Research-status Report
  • [Presentation] 自転車乗員ヘルメットの衝撃保護性能の研究2014

    • Author(s)
      笈田桂治,水野幸治,伊藤大輔
    • Organizer
      日本機械学会 第26回バイオエンジニアリング講演会
    • Place of Presentation
      東北大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Finite element analysis of kinematic behavior of cyclist and performance of cyclist helmet for human head injury in vehicle-to-cyclist collision2014

    • Author(s)
      Ito, D., Yamada, H., Oida, K., Mizuno, K.
    • Organizer
      IRCOBI Conference
    • Place of Presentation
      Berlin
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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