DYNAMICS AND STATISTICAL VIBRATION CHARACTERISTICS OF A BASE VEHICLE OF MOBILE WATER PURIFICATION STATION MOVING ON RANDOM ROAD SURFACES

The vehicle-mounted VFS-2.5 water filtration station is one of the devices used to provide clean water during rescue and relief missions; therefore, it often operates on complex terrains. This article studies the dynamic model of the mobile water filtration station VFS-2.5 of a base vehicle during movement, taking into account random road surface roughness. Based on the dynamic model of the base vehicle, the Lagrange's Equation II is used to establish a set of differential equations describing the system motion. The article employs the inverse Fourier transform method, statistical techniques, and simulations available in MATLAB to evaluate the probability density distribution, value range, and statistical characteristics of vibration acceleration for road classes C, D, and E, as well as the dynamic parameters when the vehicle moves on the class-C road within a speed of 25 km/h which is the maximum permitted speed on unpaved roads. The obtained results can serve as a basis for assessing stability, vibration effects on operators during movement, and as input parameters for experiments to evaluate the degradation of technical conditions and the reliability of the equipment on the filtration station.