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Journal of Applied Engineering Science
2012, vol. 10, iss. 1, pp. 1-8
article language: English
document type: Original Scientific Paper
published on: 12/04/2012
doi: 10.5937/jaes10-1471
Methodology for estimating the dependence between force and deplacement: A vehicle crash case
University of Belgrade, Faculty of Transport and Traffic Engineering



Development of the model for managing the vehicle technical condition in order to increase its energy efficiency and reduce exhaust emissions (MESTD - 36010)


Accident reconstruction software analyzed impact of vehicles considers usage of coefficient of restitution as a known quantity. In practice it is common that numerical value of coefficient of restitution is determined on basis of experience. Presence of error in its evaluation causes an essential error in output results. Thus, it is of exceptional importance to determine more precisely its numerical value. Improved solution of vehicle accident reconstruction software is presented in this paper. To archive that, in this paper was developed methodology which provides such analysis of impact process in which the coefficient of restitution becomes the result, and not input data. We have suggested new methodology for mathematical modeling of function dependence between force and displacement in a collision of vehicles. The compression process was approximated with piecewise linear function. The restitution process was approximated with linear curves. During process of restitution stiffness depends on maximum value of displacements during process of compression. The quality of the coherence between experimental data and mathematical function is quantified by residual sum of squares. Numerical examples are performed by usage of the obtained methodology.


methodology; reconstruction; vehicle; coefficient of restitution; error


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