Occupant v Vehicle Gs (acceleration) in Rear End Crash

Subjects related to ATB & ATB clones & the reconstruction and simulation of Occupants in vehicles and Pedestrians struck by vehicles
Post Reply
MSI
Site Admin
Posts: 1699
Joined: Thu Jun 18, 2009 12:37 pm

Occupant v Vehicle Gs (acceleration) in Rear End Crash

Post by MSI »

Question: I have a relatively low speed rear-end impact. Biomedical guy is saying whatever the lead vehicle experiences in Gs is cut by 60% for the driver due to body sinking into the soft seat. I found a 2001 SAE research study that says the opposite. They measured acceleration of vehicles and bodies and found of the 4 major body sections they measured, one accelerated 1.4 to 4 times greater than the vehicle, two were about the same as the vehicle, and the last was about twice that of the vehicle. Does it sound like the biomed guy is off or am I missing something?

A: interesting...and i expect the expert is of the 'you pay, we say' variety..
Reduction in G's based on seat padding? And what do G levels have to do with the exposure of an occupant except for peak vs average...
the DeltaV as in Impact Speed change is the important number/issue.
They want you to believe that a softer seat reduces the deltav? ride down i guess?
Been a while since i considered such issues...i'll add references, etc to this thread soon...
NEW!! LEASE pricing of msmac3D Software!!
FOR MORE TOPICS see:Forum Index & McHenrySoftware.com
Question? Comment? Please email us (all communications considered confidential)
(c)McHenry Software, Inc ALL Rights Reserved.
Post Reply