International Journal of Crashworthiness

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Structural adaptivity for acceleration level reduction in passenger car frontal collisions
International Journal of Crashworthiness - Tập 9 - Trang 121-127 - 2004
L Wågström, R Thomson, B Pipkorn
A mathematical model was developed to explore and demonstrate the injury reducing potential of an adaptable frontal stiffness system for full frontal collisions. The model was validated by means of crash tests and was found to predict the peak accelerations of the crash test vehicles well, whereas correlation concerning mean acceleration or residual crush was not found. Vehicles were divided into ...... hiện toàn bộ
Numerical modelling of the axial plastic collapse of externally grooved steel thinwalled tubes
International Journal of Crashworthiness - Tập 8 - Trang 583-590 - 2003
A G Mamalis, D E Manolakos, M B Ioannidis, P K Kostazos, S N Kastanias
This paper deals with the implementation of the explicit Finite Element Code LS-DYNA to simulate the crush behaviour and energy absorption characteristics of thin-walled steel tubes of the same length containing a number of geometrical discontinuities in the form of constant depth grooves.The obtained numerical results are compared with actual experimental data from small-scale models. Useful conc...... hiện toàn bộ
Towards a finite element head model used as a head injury predictive tool
International Journal of Crashworthiness - Tập 8 - Trang 41-52 - 2003
B Canaple, G Rungen, P Drazetic, E Markiewicz, D Cesari
The aim of this paper concerns the development of a new finite element head model. A particular attention is focused on the representation of the skull/brain interface and the use of hyperelastic material is recommended to represent the cerebro-spinal fluid. The validation of this model is achieved by the comparison of its response with results obtained from cadaver impact tests. A second topic of...... hiện toàn bộ
Measuring rollover roof strength for occupant protection
International Journal of Crashworthiness - Tập 8 - Trang 97-105 - 2003
D Friedman, C E Nash
Survival in rollovers requires occupant compartment integrity and good restraint performance (including use of effective reminders) to prevent ejection and to protect an occupant's head and neck. We provide a discussion of why roof strength is critical to survival and present the results of a recent series of quasi-static tests of roof strength. We then propose a simple, direct dynamic test of roo...... hiện toàn bộ
Factor causing scatter in dynamic certification test results for compliance with EEVC WG17 legform impactor standard
International Journal of Crashworthiness - Tập 9 - Trang 5-13 - 2004
Y Matsui, M Takabayashi
A pedestrian legform impactor is a tool for the evaluation of car front bumper aggressiveness when simulating a pedestrian leg hit by a car. The Transport Research Laboratory (TRL) developed a legform impactor in compliance with the European Enhanced Vehicle-safety Committee (EEVC)/ WG17 specifications. The Commission of the European Communities (EC) proposed a dynamic certification test for a leg...... hiện toàn bộ
Finite element modeling of the crash performance of roadside barriers
International Journal of Crashworthiness - Tập 9 - Trang 35-43 - 2004
H A Whitworth, R Bendidi, D Marzougui, R Reiss
Crashworthiness of a modified W-beam guardrail design is evaluated in this paper. In this analysis, a detailed finite element model of the guardrail was developed and the crash response simulated when impacted by a pick up truck traveling at 100 km/hr. A finite element model of a Chevrolet C2500 pickup truck was combined with the guardrail model to simulate the crash test. The combined model evalu...... hiện toàn bộ
Radioss finite element model of the Thor dummy
International Journal of Crashworthiness - Tập 8 - Trang 529-541 - 2003
P J Arnoux, S Joonekindt, L Thollon, K Kayvantash
The Thor (Test Device for Human Occupant Restraint) dummy has been designed by the National Highway Traffic Safety Administration (NHTSA) in order to provide an advanced frontal crash test dummy that incorporates improved biofidelic features and significantly expanded instrumentation. The development of a finite element model of the Thor dummy under Radioss was performed in order to provide a nume...... hiện toàn bộ
Evaluation of a new visco-elastic foam for automotive applications
International Journal of Crashworthiness - Tập 8 - Trang 169-177 - 2003
K-U Schmitt, M H Muser, P F Niederer
The geometry and mechanical characteristics of the automotive seat greatly influences the occupant kinematics in rear-end collisions. The head restraint is important particularly with respect to soft tissue neck injuries. While several studies analysed the effect of geometrical properties of head restraints, little is reported on the potential to reduce such injury by changing the material of the ...... hiện toàn bộ
Validated multibody model for train crash analysis
International Journal of Crashworthiness - Tập 8 - Trang 339-352 - 2003
J F Milho, J A C Ambrósio, M F O S Pereira
The development of numerical simulation tools for train crashworthiness design requires their validation with reference crash scenarios similar, in nature, to the eventual collision conditions in which the new train designs have to be used. The modeling assumptions and the suitability of these tools can be verified using data feedback from experimental testing. In this work, a validated multibody-...... hiện toàn bộ
Human head tolerance limits to specific injury mechanisms
International Journal of Crashworthiness - Tập 8 - Trang 605-617 - 2003
R Willinger, D Baumgartner
This study presents an original numerical human head model followed by there modal and temporal validation against human head vibration analysis in vivo and cadaver impact tests. The human head FE model developed by ULP presents two particularities : one at the brain-skull interface level were fluid-structure interaction is taken into account, the other at the skull modelling level by integrating ...... hiện toàn bộ
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