Analysis and Simulation of Vehicle to Barrier Impact

Kamal, Mounir M.

doi:10.4271/700414

Cited by 135 publications

(53 citation statements)

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“…In 1970, one-dimensional LMS models were introduced by Kamal [15] to approximate vehicle performance in front crash scenarios. Despite the recent advancements in digital modelling, more sophisticated LMS models with non-linear springs and contacts are still used by researchers and crash engineers in the automotive industry (e.g.…”

Section: Introductionmentioning

confidence: 99%

On the assessment of the macro-element methodology for full vehicle crashworthiness analysis

Γεωργίου

Zeguer

2017

International Journal of Crashworthiness

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Very fast full vehicle simulations through the use of effective, but drastically simplified digital models is a topic of great interest to automotive manufacturers and research communities. A nonconventional modelling and simulation approach using the macro-element methodology, embedded in Visual Crash Studio (VCS), is assessed. Modelling practices for converting finite element models to macro-element models are developed and presented. A large number of automotive systems, ranging from components and sub-systems to full vehicle models, is investigated. Numerical results obtained from VCS and the finite element code LS-DYNA compared moderately in the majority of the cases. The accuracy and efficiency of the macro-element methodology for vehicle crashworthiness analysis as well as the necessity for model corrections are discussed. Through improved functionality and accuracy, the macro-element methodology could potentially enable engineers to evaluate multiple conceptual designs in shorter times and revolutionise the vehicle development phase. KEYWORDSSimplified crashworthiness modelling and simulation; macro-element methodology; roof strength test; full width frontal impact

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Section: Introductionmentioning

confidence: 99%

On the assessment of the macro-element methodology for full vehicle crashworthiness analysis

Γεωργίου

Zeguer

2017

International Journal of Crashworthiness

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“…The simple Lumped Mass Spring (LMS) model of which properties are deduced from static crush tests, like Kamal's model [1], was firstly used for a crash simulation. Then, the multibody model MADYMO [2] was developed for both car parts and occupants [3].…”

Section: Introductionmentioning

confidence: 99%

SVD Family for Analyzing Car Crash Behavior

Vuong¹,

Jézéquel²,

Tourbier³

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. The car crash simulation describes the deformation of the car structure under high velocity (up to 65 km/h) during a very short simulation time (about 100 ms). The simulation represents many complexities of the finite element method in structural analysis: (i) high number of degrees of freedom (from 5 to 20 M finite elements for a whole vehicle) in order to well take into account of the geometrical and material nonlinearities; (ii) use of direct time-integration, explicit algorithm, which needs very small time step (due to Courant's condition) and consequently long time simulation (till 24 hours); (iii) high performance software needed (solver). Furthermore, the crash simulation is transient during all simulation; the contact management is sophisticated and the results are scattered. We are interested in elaborating a reduced crash model in order to cut down the total cost of an optimization study. The method should be a posteriori allowing predicting a new simulation interpolated between existing simulation(s) in a Design Of Experiments (DOE). We choose methods in the Singular Value Decomposition (SVD) family in order to find temporal correlation among crash data in one simulation, spatial and parametric correlation among crash data in several simulations. Two almost industrial use cases (BoxBeam -representing the most important car part for energy absorption and TBeam -representing the engine compartment) are tested with Matlab software.

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“…The mathematical modelling tool is preferable in the first stage of design to avoid the high computational costs using Finite Element (FE) models. Two analytical models were created using a computer simulation, one for vehicle component crash and the other for barrier impact statically and then both models were merged into one model (14). To achieve enhanced occupant safety, the crash energy management system was explored (15).…”

Section: Mathematical Modellingmentioning

confidence: 99%

Using an Extendable Bumper With an Aid of Vehicle Dynamics Control System to Improve the Occupant Safety in Frontal Vehicle-to-Vehicle Collision Scenario

Elkady

Elmarakbi

MacIntyre

2016

Volume 12: Transportation Systems

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This paper aims to improve vehicle crashworthiness using vehicle dynamics control systems (VDCS) integrated with an extendable front-end structure (extendable bumper). The work carried out in this paper includes developing and analyzing a new vehicle dynamics/crash mathematical model and a multibody occupant mathematical model in case of vehicle-tovehicle full frontal impact. The first model integrates a vehicle dynamics model with the vehicle's front-end structure to define the vehicle body crash kinematic parameters. In this model, the anti-lock braking system (ABS) and the active suspension control system (ASC) are co-simulated, and its associated equations of motion are developed and solved numerically. The second model is used to capture the occupant kinematics during full frontal collision. The simulations show considerable improvements using VDCS with and without the extendable bumper (EB), which produces additional significant improvements for both vehicle boy acceleration and intrusion.

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Analysis and Simulation of Vehicle to Barrier Impact

Cited by 135 publications

References 0 publications

On the assessment of the macro-element methodology for full vehicle crashworthiness analysis

On the assessment of the macro-element methodology for full vehicle crashworthiness analysis

SVD Family for Analyzing Car Crash Behavior

Using an Extendable Bumper With an Aid of Vehicle Dynamics Control System to Improve the Occupant Safety in Frontal Vehicle-to-Vehicle Collision Scenario

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