Date of Award
Fall 2005
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical & Aerospace Engineering
Program/Concentration
Mechanical Engineering
Committee Director
Sebastian Bawab
Committee Member
Stephen Cupschalk
Committee Member
Abdelmageed A. Elmustafa
Call Number for Print
Special Collection; LD4331.E56 K33 2005
Abstract
According to the National Safety Council, rear-end collisions are the most common types of collisions with approximately two and a half million cases reported every year. Crash tests indicate a change of vehicle velocity of 4km/h (2.5 mph) may produce occupant symptoms. Vehicle damage may not occur until 14-15km/h (8.7 mph) (Davis CG, 1998). Occupants, in rear-end vehicle impacts sustain a motion associated with whiplash, where the head snaps backwards quickly, resulting in linear and/or angular acceleration forces acting on the brain. This angular motion tends to subject the brain to shear deformations from rapid rotation. This study is a continuation of previous work, which was carried out to evaluate the effects of initial seated position (ISP) during a low speed rear-end impact (Venkataramana et al., 2005). A modified dummy model is built by coupling the FE (Finite Element) human brain model developed by TNO MADYMO (MAthematical DYnamic MOdel) (Claessens et. al., 1997) to the Hybrid III 50th percentile TRID (TNO Rear Impact Dummy) (MADYMO 6.0 Database manual-Hybrid III 50th percentile Dummy with TRID neck).
The study is carried out in different parts. Firstly, a coupled brain dummy model is compared to the head acceleration results of the Hybrid III-TRID dummy. The comparison is based on the four seating positions, namely Normal Position (NP), Torsolean Position (TLP), Torsolean Head-Flex Position (TLHFP) and Head-Flex Position (HFP). Secondly, an effort is made to modify the brain model as to study the response by varying the skull-brain interface condition. Lastly, results for different parts of the brain such as calculating the head injury criterion (HIC), shear stresses and shear strains along with von-Mises stresses in the coup, contercoup regions for the cases in the first and second parts are presented.
Rights
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DOI
10.25777/6d3k-cp34
Recommended Citation
Kadam, Mangesh S..
"An Analysis of a Finite Element Human Brain in Low Speed Rear Impact Automobile Collision Comparison, Model Development and Study Using TNO Rear Impact Dummy"
(2005). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/6d3k-cp34
https://digitalcommons.odu.edu/mae_etds/553