Investigation of vehicle crash modeling techniques: theory and application

Pawlus, Witold; Karimi, Hamid Reza; Robbersmyr, Kjell G.

doi:10.1007/s00170-013-5320-3

Cited by 30 publications

(18 citation statements)

References 60 publications

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“…CRASH) [4,22,28,29]. In some research procedures, advanced signal processing and identification techniques are also used, as for example those based on the wavelet transformation and the NARMA method [18]. An extensive review of those approaches, together with examples of the application of experimental, analytical and simulation results to the analysis and reconstruction of motor vehicle collisions can be found, for example, in [1,10,21].…”

Section: Introductionmentioning

confidence: 99%

The process of front-to-side collision of motor vehicles in terms of energy balance

et al. 2018

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The reconstruction of a road accident can be treated as the resolution of an "inverse problem" in mechanics using analytical or numerical models. In the road accident reconstruction research, an assumption is often made that a predominant part of the energy lost during vehicle collisions is consumed by permanent deformation of vehicle components. Other parts of the dissipated energy can be ignored due to their insignificant amount. In this article, this assumption will be verified for the front-to-side collision of passenger cars. The main objective of this paper is to determine the important components of the energy balance dissipated during the collision. These components were determined on the basis of experimental results, which included three crash tests with a front-to-side collision of motor vehicles of the same make and model, with the right-angle impact of one car against the side of another. The results of experiments were used to construct the model of the dynamics of the motor vehicle collision. The model was then used as a basis for the determination of the forces, displacements and velocities during vehicle collision. The above made it possible to determine vehicle force/deformation curves and then M. Gidlewski (B) the key components of the dissipated energy in function of the duration of the contact phase of the vehicle collision. Based on the results of the model and crash tests, conclusions were formulated that provide an important insight into the reconstruction of the front-to-side collisions of motor vehicles.

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Section: Introductionmentioning

confidence: 99%

The process of front-to-side collision of motor vehicles in terms of energy balance

et al. 2018

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“…Mechanical models of a viscoelastic body, such as Kelvin-Voigt, Maxwell, and Zener, are widely used in the analysis of crash tests and accident reconstructions; see [5]. Experimental results of a car to pole frontal impact test are presented in the papers of Pawlus et al [6,7]. Numerical simulations obtained by using one viscoelastic body described by some of the standard viscoelastic models, analyzed in the two last mentioned papers, did not show satisfactory agreement with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

Application of Fractional Calculus to Frontal Crash Modeling

Žigić¹,

Grahovac²

2017

Mathematical Problems in Engineering

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Fractional derivative viscoelastic model is used in the analysis of a frontal impact of a vehicle against a rigid obstacle. The frontal part of the vehicle is first modeled as a viscoelastic fractional rod and then it is modeled as two different viscoelastic fractional rods with a different length. In the second model also the friction is taken into account. A motion is analyzed during several phases because of both different lengths of the rods and the presence of a dry friction force in the later model. Governing systems of differential equations together with the corresponding initial conditions are derived. Parameter identification is done on the basis of the existing experimental results using the solution of a posed impact problem. What makes the problem more complex, regarding the second model, is the fact that it belongs to the class of nonsmooth fractional order systems, which require special treatment when dealing with deformation history during different motion phases.

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“…The behaviour of the vehicle during impact can then be simulated by defining values for the spring-and damping coefficients. Although there are several mathematical models in the literature, Pawlus et al [1] showed that the Maxwell model gives great results when compared with experimental crash data. Further, when dealing with LPMs, the spring-and damping coefficients almost certainly will need to be optimized to get satisfactory results.…”

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confidence: 99%

Development and validation of a nonlinear dynamic impact model for a notch impact

Jecmenica

Melteig

Robbersmyr

et al. 2015

Int J Adv Manuf Technol

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Finite element simulations are being more and more applied when studying the crash-worthiness of vehicles during impact. This paper deals with setting up such a simulation and discusses several ways to simplify and verify a simulated crash. For this purpose, a notch impact-testing machine will be released from a certain angle and crash into a model constructed with three different wall thicknesses. The plastic and elastic deformation is measured in the front of the model and is then used for validation of the simulation. In the end, the simulation was found to be in good agreement with the real crash data.

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Investigation of vehicle crash modeling techniques: theory and application

Cited by 30 publications

References 60 publications

The process of front-to-side collision of motor vehicles in terms of energy balance

The process of front-to-side collision of motor vehicles in terms of energy balance

Application of Fractional Calculus to Frontal Crash Modeling

Development and validation of a nonlinear dynamic impact model for a notch impact

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