Detail publikace
Stress and deformation response of a car safety frame on static and impact loading
DOBEŠ, M. VRBKA, J.
Český název
Stress and deformation response of a car safety frame on static and impact loading
Anglický název
Stress and deformation response of a car safety frame on static and impact loading
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
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.
Český abstrakt
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.
Anglický abstrakt
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.
Klíčová slova česky
car safety frame, impact loading, stress and deformation analysis, finite element method, explicit analysis.
Klíčová slova anglicky
car safety frame, impact loading, stress and deformation analysis, finite element method, explicit analysis.
Rok RIV
2014
Vydáno
26.08.2014
ISSN
1801-1217
Ročník
2014
Číslo
8
Strany od–do
10–15
Počet stran
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"
}