Vehicle front structure in consideration of compatibility.

Author(s)
Fujii, S. Fukushima, M. Abe, A. Ogawa, S. Fujita, H. Sunakawa, T. & Tanaka, Y.
Year
Abstract

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.

Publication

Library number
C 31026 (In: C 30848 CD-ROM) /91 / ITRD E124468
Source

In: Proceedings of the 18th International Technical Conference on Enhanced Safety of Vehicles ESV, Nagoya, Japan, May 19-22, 2003, 9 p., 9 ref.

Publication (link)

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