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

• Features: References;
• Pagination: 9 p.
• Serial:
  • PROCEEDINGS OF 18TH INTERNATIONAL TECHNICAL CONFERENCE ON THE ENHANCED SAFETY OF VEHICLES, HELD NAGOYA, JAPAN, 19-22 MAY 2003
  • Publisher: National Highway Traffic Safety Administration

Subject/Index Terms

• TRT Terms: Automobiles; Conferences; Design; Frontal crashes; Motor vehicle bodies; Simulation; Size
• Uncontrolled Terms: Front
• ITRD Terms: 1356: Body (car); 1243: Car; 8525: Conference; 9011: Design (overall design); 9014: Dimension; 9025: Front; 1640: Head on collision; 9103: Simulation
• Subject Areas: Design;

Filing Info

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