Identification of lumped parameter automotive crash models for bumper system development

Jonsén, Pär; Isaksson, Erik; Sundin, Karl-Gustaf; Oldenburg, Mats

doi:10.1080/13588260902837262

Cited by 34 publications

(19 citation statements)

References 7 publications

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“…This programming solver was developed in accordance with the explicit Lagrangian computational method (Benson, 1992;Gouddreau and Hallquist, 1982). The solutions are advanced in time using an explicit integration scheme and they must be resolved accurately in both space and time domains (Cook et al, 1989;Jonsén et al, 2009). Recently the development of Lagrangian hydrocode is continued for a wide range of application namely automotive and aviation industries.…”

Section: Lagrangian Computational Methodsmentioning

confidence: 99%

Development of two-dimensional solver code for hybrid model of energy absorbing system

Ahmad¹,

Campbell²

2013

Int. J. Phys. Sci.

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This paper treats the dynamic and energy absorption responses of nonlinear spring-mass system using a developed two dimensional solver code. The influence of spring stiffness and various mass configurations on the impact response was investigated using validated models. Results are quantified in terms of important impact response and indicate that an assembly of spring-mass system can be employed to examine the impact response of energy absorption system prior to the detailed numerical analysis and experiment. The developed solver code will be useful for educational purposes to preliminarily understand the behavior and impact response of energy absorbing system without learning a piece of complicated nonlinear commercial finite element codes namely LS-DYNA. The developed code could facilitate the early stage of evaluation for impact applications.

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Section: Lagrangian Computational Methodsmentioning

confidence: 99%

Development of two-dimensional solver code for hybrid model of energy absorbing system

Ahmad¹,

Campbell²

2013

Int. J. Phys. Sci.

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“…It is an analytical method of formulating a model which can be further used for simulation of a real event. It allows us to establish dynamic equations of the system -differential equationswhich give the complete description of the model's behavior, see the references [6] and [7]. To be able to analyze a given collision, it is often enough (and more efficient) not to examine the complicated crash pulse but just to study its approximation.…”

Section: Introductionmentioning

confidence: 99%

Further results on mathematical models of vehicle localized impact

Pawlus

Nielsen

Karimi

et al. 2010

2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics

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Abstract-In this paper, we propose a method of modeling for vehicle crash systems based on viscous and elastic properties of the materials. This paper covers an influence of different arrangement of spring and damper on the models' response. Differences in simulating vehicle -to -rigid barrier collision and vehicle -to -pole collision are explained. Comparison of the models obtained from wideband (unfiltered) acceleration and filtered acceleration is done. At the end we propose a model which is suitable for localized collisions simulation.

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“…It allows us to establish dynamic equations of the system -differential equations -which give the complete description of the models behavior, see Deb and Srinivas (2008) and Jonsén et al (2009). In Pawlus et al (2010b) and Pawlus et al (2010c) basic mathematical models of vehicle to pole collision are created.…”

Section: Introductionmentioning

confidence: 99%

The performance investigation of viscoelastic hybrid models in vehicle crash event representation

Pawlus

Robbersmyr

Karimi

et al. 2011

IFAC Proceedings Volumes

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This paper presents application of physical models composed of springs, dampers and masses joined together in various arrangements to simulation of a real car collision with a rigid pole. Equations of motion of those systems are being established and subsequently solutions to obtained differential equations are formulated. We start with a general model consisting of two masses, two springs, and two dampers, and illustrate its application to represent fore-frame and aft-frame of a vehicle. Hybrid models, as being particular cases of two mass-spring-damper model, are elaborated afterwards and their application to predict results of real collision is shown. Models' parameters are obtained by fitting their response equations to the real vehicle's crush coming from the acceleration measurement analysis. For full-scale experiment and created models we perform both: kinematic and energy responses comparative analysis.

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Identification of lumped parameter automotive crash models for bumper system development

Cited by 34 publications

References 7 publications

Development of two-dimensional solver code for hybrid model of energy absorbing system

Development of two-dimensional solver code for hybrid model of energy absorbing system

Further results on mathematical models of vehicle localized impact

The performance investigation of viscoelastic hybrid models in vehicle crash event representation

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