VEHICLE FRONT STRUCTURE IN CONSIDERATION OF COMPATIBILITY

A structure which effectively improves compatibility in a vehicle-to-vehicle frontal impact has been considered focusing on sub-frame structure that disperses applied force with multiple load paths. Evolved sub-frame structure has been studied by CAE with RADIOSS to search the possibility to reduce aggressivity and to improve self-protection at the same time. Vehicle models used for this compatibility study were a large saloon car with sub-frame and a small family car without sub-frame. The large saloon car had three different front structures: original, forward-extended sub-frame, and original with 25%-stiffness reduced structures. The types of collision contained four different crash modes in a combination of lateral overlap rate difference and side member height difference. With these three different structures in four different crash modes, crash simulations were conducted to evaluate aggressivity and self-protection based on front structure and compartment deformations, energy absorption amount, and Average Height of Force (AHOF). As a result, it was found that the front structure with forward-extended sub-frame improved both aggressivity and self-protection by preventing override effect through structural interaction enhancement. For the covering abstract see ITRD E825082.

  • Corporate Authors:

    National Highway Traffic Safety Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    MINISTRY OF ECONOMY, TRADE AND INDUSTRY OF JAPAN

    1-3-1, KASUMIGASEKI, CHIYODA-KU
    TOKYO,   Japan  100-8901
  • Authors:
    • FUJII, S
    • FUKUSHIMA, M
    • ABE, A
    • OGAWA, S
    • FUJITA, H
    • SUNAKAWA, T
    • Tanaka, Y
  • Publication Date: 2003-5

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00987378
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, USDOT
  • Created Date: Mar 3 2005 12:00AM