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Signal analysis, modeling and simulation of vehicle crash dynamics

Midjena, Debela Yadeta; Muraspahic, Sanin
Master thesis
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Midjena, Debela Yadeta and Muraspahic, Sanin Oppgave.pdf (10.56Mb)
URI
http://hdl.handle.net/11250/136710
Date
2013
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  • Master's theses in Mechatronics [90]
Abstract
Vehicle crash safety has been a strong point of interest for long time in many countries due to

the reason that safety statistics show high fatality rate of vehicle occupants involved in road

accidents. All vehicles which are going to appear on the road must go through several serious

crash investigations to approve whether they conform to the relevant safety standards. There are

large crash test facilities built by big companies for these operations. However, a wide and full-scale

crash testing is complex, di cult and expensive that demands many things to be ful lled. Because

of these and other reasons, mathematical models could be developed to represent real world vehicle

crash scenarios. This work is devoted to developing a vehicle crash modeling and a reconstruction

of physical models composed of springs, dampers and mass arrangements to simulate a real car

collision with a rigid pole. First, an extensive signal analysis is carried out to understand the vehicle

full-scale frontal crash in time domain and frequency domain. Next, 2D and 3D mass-springdamper

model are presented and equations of motion for the dynamic model are being established

and subsequently solutions to obtain di erential equations are formulated. The models' parameters

are obtained by tting their response equations to the real data measurement from vehicle crash

experiment. The identi ed parameters with the proposed 2D and 3D mathematical models are

used for the simulation, and the response from the models are veri ed by comparing them with

the real data from experiment. The comparison and validation show that the model represented

are well suited to the real vehicle crash scenario.
Description
Masteroppgave i mekatronikk MAS500 2013 – Universitetet i Agder, Grimstad
Publisher
Universitetet i Agder / University of Agder

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