Simulation of the right-angle car collision based on identified parameters

Kostek, Robert; Aleksandrowicz, Piotr

doi:10.1088/1757-899x/252/1/012013

Cited by 11 publications

(7 citation statements)

References 2 publications

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“…This modeling is, however, simplified and an expert needs to change many of the program parameters. For example, in works [7,8,9] the authors, after identification of the impact parameters on the basis of a crash test, present sensitivity of the simulation parameters to be used for reconstruction of the crash according to initially accepted input data which causes simplification of modeling the forces that occur during the vehicle collision provided by the simulation programs. In Poland the most popular program used for impact modeling in MBS convention is V-SIM4 program.…”

Section: Research Procedures Of Sdc Methodsmentioning

confidence: 99%

Application of impact analysis SDC method for verification of whiplash injuries

Aleksandrowicz

2019

MATEC Web Conf.

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Collisions of vehicles that occur in cities involve relatively low speeds. Even though the speed of a collision is not high passengers are exposed to a risk of neck spine damage when a rear-end accident takes place. These injures are referred to as Whiplash injuries which are difficult to verify when it is necessary to resolve a rear-end collision damage claim. This study presents procedures of SDC method to be used for verification of circumstances that are reported to have caused such injuries. An analysis was carried out based on a case study of a collision of two passenger cars of different categories and the results can be used by theoreticians and practitioners who are involved in research on this subject.

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Section: Research Procedures Of Sdc Methodsmentioning

confidence: 99%

Application of impact analysis SDC method for verification of whiplash injuries

Aleksandrowicz

2019

MATEC Web Conf.

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“…The longitudinal load on the carrying structure of a flat wagon was taken equal to 2.5 МN [9,10]. The initial displacements and speeds were taken equal to zero [11][12][13][14][15][16]. Differential Eq.…”

Section: New Draft Gear Concept For Decreasing the Dynamic Loadmentioning

confidence: 99%

Dynamic load of the carrying structure of an articulated wagon with new draft gear concepts

Fomin¹,

Lovska²,

Píštěk³

et al. 2020

Vib. proced.

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The article deals with a new draft gear concept proposed by the authors to reduce the dynamic load of wagons in operational modes. The peculiarity of the concept is transformation of the kinetic impact energy into the work of viscous resistance forces when the viscous fluid passes through the throttle openings of the piston. The concept can be introduced for the wagons, in which centre sills of the frames are of closed sections. The mathematic modelling was conducted for the dynamic load of articulated wagons with consideration of the draft gear concept. It was established that the use of the draft gear concept can lower the dynamic load of wagons by about 10 %. The research will encourage engineers to design modern structures of rolling stock units and increase their operational efficiency.

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“…Moreover, contact parameters were identified with V-SIM4 from crash tests with impact block (Kostek and Aleksandrowicz, 2017a). Then V-SIM4 was used to simulate crashes for default and identified data, which provides an opportunity to show the sensitivity of post impact movement to input data (Kostek and Aleksandrowicz, 2017b). The authors demonstrated that for the accurate simulations the default data were changed, otherwise applying default parameters can lead to significant errors.…”

Section: Introductionmentioning

confidence: 99%

Identification of the parameters of a vehicle crashing into a round pillar

Kostek¹,

Aleksandrowicz²

2020

Journal of Theoretical and Applied Mechanics

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This article presents a study on reconstruction of a crash of a passenger car-Opel Mokka, into a pillar. Computer simulations were performed with software V-SIM4, both for default data and data identified from the crash test. The crash test was performed by AUTOBILD and DEKRA. The frontal collision with a pillar is not a standard crash test recommended by the Directives of CommunautéÉconomique Européenne (CEE), even though this type of collision poses a serious threat to the safety of vehicle users. The threat comes from the large penetration of the vehicle body through the pillar. These accidents are difficult to reconstruct with the programs applied by expert witnesses, because they require a lot of experience and changes in many parameters. Identification of these parameters is critical in this case. Values of the parameters were identified from recorded images. The obtained results of simulation show strong sensitivity of the accident course to the position of the force application point, which acts between the pillar and the vehicle. Also, the key factors are: contact parameters, identification of the initial conditions, sensitivity of the course of the accident to the adopted values of the parameters, and knowledge of the limitations of any software. Many expert witnesses do not even realise that their results of simulations, based on default values, are faulty. The process of obtaining an agreement between the simulation and experimental results is a time-consuming iteration process. This process is described in this article, which is address to expert witnesses and researchers; moreover, a direction for development of software was suggested.

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Simulation of the right-angle car collision based on identified parameters

Cited by 11 publications

References 2 publications

Application of impact analysis SDC method for verification of whiplash injuries

Application of impact analysis SDC method for verification of whiplash injuries

Dynamic load of the carrying structure of an articulated wagon with new draft gear concepts

Identification of the parameters of a vehicle crashing into a round pillar

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