Wyniki wyszukiwania - BazTech

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Analysis of the end-of-life the front suspension beam of a vehicle

Kowalski Sławomir, Opoka Kazimierz, Ciuła Józef

Eksploatacja i Niezawodność

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2022

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Vol. 24, no. 3

446--454

EN

The aim of the article is focused on assessing the degree of end-of-life for the vehicle front suspension beam. The first stage of the problem taken was represented by a road test of the vehicle at distance expressed by 100.000 km. Following the end of the operation tests, the suspension beam was dismantled and subjected to laboratory tests. The tests demonstrated numerous beam top layer plastic deformations, which came into being as a result of the vehicle driving onto an obstacle on the roadway or onto raised road infrastructure elements. At the point of connection of the stabiliser rod to the beam, surface degradation was noted, which consisted in the considerable change of the surface profile, hardness reduction and the grey and dark brown colour. Corrosion regions and fretting wear traces were noted. Corrosion pits, scratches and material build-ups was observed. The analysis of the chemical composition of wear products demonstrated the presence of elements such as iron, oxygen, chlorine and silicon, as an effect of operational conditions.

2

Zjawisko zmęczenia w elementach zawieszenia pojazdów

Mazurek B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2017

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z. 108

99--104

EN

The fatigue resistance of vehicle suspension components has a direct impact on safety. Swingarm during the drive is exposed to the forces of the vehicle when braking, cornering or driving into the road inequality. Considering this, a review of the swing arm fatigue tests has been carried out. This review is an introduction to off-road vehicle research.

3

Prof. Eugeniusz Kamiński (1923-1995)

Kamiński J., Pokorski J.

Zeszyty Naukowe Instytutu Pojazdów / Politechnika Warszawska

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2015

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z. 4/104

5--7

4

Numerical investigations of terrain vehicle tire subjected to blast wave

Baranowski P., Małachowski J.

Journal of KONES

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2011

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Vol. 18, No. 1

23-30

EN

In this paper a numerical model of a terrain vehicle suspension system development process is presented. In the performed studies the suspension system with and without a simplified motor-car body was taken into consideration. Geometry of the tire, wheel and system elements were achieved using reverse engineering technology. Moreover, with the assistance of a microscope and an X-ray device it was possible to achieve the exact tire cords pattern, which in the next stages was implemented into the FE model. Subsequently, numerical simulations of both cases were performed simulating the TNT explosion under a wheel. The non-linear dynamic analyses were performed using the LS-DYNA code. To solve both presented cases the explicit central difference scheme with modified time integration of the equation of motion was implemented. Computations of blast wave propagation were carried out with the Smooth Particle Hydrodynamics (SPH) method with Jones Wilkins Lee (JWL) equation of state defining the explosive material. Obtained results have shown different suspension system elements damage and tire destruction characteristic, which come from blast wave reflection of the motor-car body surface.