An Analysis of Trends of Vehicle Frontal Impact Stiffness

Format:

Book

Conference/Event

Author/Creator:

Varat, Michael S., author.

Conference Name:

International Congress & Exposition (1994-02-28 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 1994

Summary:

Impact induced vehicle residual deformation serves as a basis for the reconstruction engineer to make a determination of the energy absorbed during the impact phase of a collision. Many impact phase reconstruction algorithms assume a linear relation between an absorbed energy function and residual crush in order to derive collision severity (Delta V, BEV, et cetera). This is done through the assumption of a constant spring stiffness value to describe the vehicle frontal impact stiffness. However, some recent rigid barrier impact test data has demonstrated non-linear trends between crash energy and residual crush. The total body of available crash test data indicates that vehicle frontal stiffness cannot be precisely modeled through the use of a single linear spring stiffness for all vehicles. This paper will explore stiffness trends and make comparisons to the previously assigned linear assumption for a diverse sample of vehicles and test speeds into frontal fixed barriers. The available crash test data is plotted and analyzed and the resulting linear and non-linear trends are discussed. Applications to the accident reconstruction field are also explored

Notes:

Vendor supplied data

Publisher Number:

940914

Access Restriction:

Restricted for use by site license