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1 2011

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Numerical investigations of terrain vehicle tire subjected to blast wave

Baranowski P., Małachowski J.

Journal of KONES

2011

Vol. 18, No. 1

23-30

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.