Estimation of Dynamic Properties for the Validation of Driven Railway Vehicle Models

Fuchs, Josef; Luber, Bernd; Müller, Gabor; Rulka, W.

doi:10.1007/978-3-030-38077-9_73

Cited by 2 publications

(1 citation statement)

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“…In the model validation process, attention was focused on the parametrization of the data of the third category. A validation procedure was developed, which was taken in part from works [30,34,35]. The parameter values sought were estimated, as a basis, from experimental test results and then simulation calculations were carried out on these grounds.…”

Section: Non-linear Characteristics Of the Deformation Processmentioning

confidence: 99%

Kinematics of the motorcar body side deformation process during front-to-side vehicle collision and the emergence of a hazard to car occupants

et al. 2021

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The kinematics of the process of deformation of the motorcar body side in the culminating phase of a front-to-side vehicle collision has been examined as a possible basis for analyzing and modeling the process of emergence of a hazard to car occupants during a road accident. The course of such accidents has a complex nature and their models are necessarily based on the approximation of non-linear elastoplastic characteristics of impact processes, especially during the transition from the compression phase to the restitution phase of the deformation process. For such characteristics to be obtained, a lot of experimental tests have to be carried out. This paper addresses the short-duration processes with a high degree of complexity.A front-to-side motorcar collision model has been prepared, which made it possible to analyze the process of deformation of the car body side and the emergence of a hazard and injuries to car occupants. The results of calculation of the deformation rate and range in various car body zones, velocity of the test dummy placed on driver’s seat and velocity of possible dummy’s impact against the car body side being deformed may be taken as a basis for designing effective occupant protection systems. The kinematics of the phase of vehicle contact and deformation process was modeled with taking into account results of experimental tests, including the curves characterizing the largely non-linear processes that are decisive for the deformation of the car body side. The deformation processes analyzed on these grounds showed at the same time the range of penetration of the deformed body part into the car interior, which causes a hazard to vehicle occupants. The calculation results have shown e.g. that the car body side is deformed to a depth of 0.2 m as quickly as within 0.02–0.03 s. At such a car body side deformation range, the car body part being deformed hits occupant’s body in his/her hips and pelvis area with a velocity of about 6 m/s.

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Section: Non-linear Characteristics Of the Deformation Processmentioning

confidence: 99%