Publication detail
Stress and deformation response of a car safety frame on static and impact loading
DOBEŠ, M. VRBKA, J.
Czech title
Stress and deformation response of a car safety frame on static and impact loading
English title
Stress and deformation response of a car safety frame on static and impact loading
Type
journal article - other
Language
en
Original abstract
The safety frame is the main element of passive safety for most racing cars. Till now the frames stiffness is investigated only on the basis of static loading tests, which are not able to take into account the dynamic effect of the high speed impact due to the car collision. For more correct frame safety analysis the dynamic impact loading simulation is necessary. The influence of the impact velocity on the frame stiffness, stress and deformation has been studied and comparison with results obtained for the static loading has been performed. The static and dynamic loadings exhibit very different stiffness, deformation and stress time courses in the time just after impact. Later the differences are not so big. Furthermore the car rollover has been modeled as a dynamic impact problem for the impact velocity 20 km/hour. A relative good agreement with corresponding prescribed static test has been achieved with exception of the time period close to impact. The explicit version of the finite element method (FEM) has been utilized for the impact computational analysis, namely FEM code LS-DYNA.
Czech abstract
The safety frame is the main element of passive safety for most racing cars. Till now the frames stiffness is investigated only on the basis of static loading tests, which are not able to take into account the dynamic effect of the high speed impact due to the car collision. For more correct frame safety analysis the dynamic impact loading simulation is necessary. The influence of the impact velocity on the frame stiffness, stress and deformation has been studied and comparison with results obtained for the static loading has been performed. The static and dynamic loadings exhibit very different stiffness, deformation and stress time courses in the time just after impact. Later the differences are not so big. Furthermore the car rollover has been modeled as a dynamic impact problem for the impact velocity 20 km/hour. A relative good agreement with corresponding prescribed static test has been achieved with exception of the time period close to impact. The explicit version of the finite element method (FEM) has been utilized for the impact computational analysis, namely FEM code LS-DYNA.
English abstract
The safety frame is the main element of passive safety for most racing cars. Till now the frames stiffness is investigated only on the basis of static loading tests, which are not able to take into account the dynamic effect of the high speed impact due to the car collision. For more correct frame safety analysis the dynamic impact loading simulation is necessary. The influence of the impact velocity on the frame stiffness, stress and deformation has been studied and comparison with results obtained for the static loading has been performed. The static and dynamic loadings exhibit very different stiffness, deformation and stress time courses in the time just after impact. Later the differences are not so big. Furthermore the car rollover has been modeled as a dynamic impact problem for the impact velocity 20 km/hour. A relative good agreement with corresponding prescribed static test has been achieved with exception of the time period close to impact. The explicit version of the finite element method (FEM) has been utilized for the impact computational analysis, namely FEM code LS-DYNA.
Keywords in Czech
car safety frame, impact loading, stress and deformation analysis, finite element method, explicit analysis.
Keywords in English
car safety frame, impact loading, stress and deformation analysis, finite element method, explicit analysis.
RIV year
2014
Released
26.08.2014
ISSN
1801-1217
Volume
2014
Number
8
Pages from–to
10–15
Pages count
6
BIBTEX
@article{BUT108959,
author="Martin {Dobeš} and Jan {Vrbka},
title="Stress and deformation response of a car safety frame on static and impact loading",
year="2014",
volume="2014",
number="8",
month="August",
pages="10--15",
issn="1801-1217"
}