Collision Speed Estimation Using a Single Normalised Crush Depth-Impact Speed Characteristic

Format:

Conference/Event

Author/Creator:

Wood, Denis P., author.

Conference Name:

International Congress & Exposition (1992-02-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1992

Summary:

Theoretical consideration of the energy absorption properties of structures shows that the specific energy absorption (E/Mk) is related to the normalised crush depth (d/L) and to a stress/density parameter. Examination of the crush characteristics of the car population shows that the mean stress/density parameter of the car population in frontal crush is independent of car size. On this basis regression is carried out which relates (2E/Mk) to normalised crush depth (d/L)Using data from nine staged frontal car to car collisions this generalised specific energy absorption representation is compared with CRASH 3 and with Prasad's (5) individual car reformulation. It is shown that the accuracy of Delta V prediction with Prasad's individual car reformulation is superior to both the normalised crush depth model proposed here and to CRASH 3, both of which have similar accuracies. A missing vehicle energy estimator, E1[1+Mk1/Mk2] is examined as is the crush depth energy estimator, E1[1+d2̄/d1̄]. lt is shown that in conjunction with the normalised frontal crush depth regression they can be applied to frontal and to 90 degree front/side car to car collisions

Notes:

Vendor supplied data

Publisher Number:

920604

Access Restriction:

Restricted for use by site license