Mathematical Modeling and Parameters Estimation of Car Crash Using Eigensystem Realization Algorithm and Curve-Fitting ApproachesReportar como inadecuado




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Mathematical Problems in EngineeringVolume 2013 2013, Article ID 262196, 13 pages

Research ArticleDepartment of Engineering, Faculty of Engineering and Science, University of Agder, N-4898 Grimstad, Norway

Received 7 July 2013; Revised 16 September 2013; Accepted 17 September 2013

Academic Editor: Zidong Wang

Copyright © 2013 Bernard B. Munyazikwiye et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

An eigensystem realization algorithm ERA approach for estimating the structural system matrices is proposed in this paper using the measurements of acceleration data available from the real crash test. A mathematical model that represents the real vehicle frontal crash scenario is presented. The model’s structure is a double-spring-mass-damper system, whereby the front mass represents the vehicle-chassis and the rear mass represents the passenger compartment. The physical parameters of the model are estimated using curve-fitting approach, and the estimated state system matrices are estimated by using the ERA approach. The model is validated by comparing the results from the model with those from the real crash test.





Autor: Bernard B. Munyazikwiye, Hamid Reza Karimi, and Kjell Gunnar Robbersmyr

Fuente: https://www.hindawi.com/



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