This thesis presents two simulations of a heavy hybrid vehicle, the first part of the thesis is focused on the specifications of the vehicle designed in accordance with the requirements based on the literature study of the soils where the vehicle will travel. The second part presents the study of the vehicle through two simulations. The first simulation is oriented on the dynamical behavior of the vehicle. The second simulation focuses on the energy management of the vehicle. The presented thesis is a multi-disciplinary study, combining knowledge on vehicle dynamics, hydraulic suspensions and hybrid systems. The dynamical simulation of the vehicle has been performed with Matlab/Simulink and the third party program Delft-Tire for the tire modelling. Specials features of Matlab have been used; SimMechanics for the modelling of the parts, links and joints of the vehicle, and SimHydraulics for the modelling of the hydraulic suspensions. The principal tests performed on the vehicle by the dynamical simulation are the tests defined by the NATO - STANAG standards as AVTP 03-170. The tests are a crossing obstacle test and different sine wave roads. The obstacle of the obstacle crossing test is an APG-10 obstacle, an 10 inch high step with vertical edges. The objective of this simulation is to verify the design of the suspension and to observe the forces created in each link of the suspension system in order to design the chassis and the suspension system. The sine wave driving tests are performed to highlight the influence of the different hydraulic connections. Finally the slalom test presents the influence of the hydraulic anti-roll bar. The results show that the vehicle suspension verifies the STANAG standard. The results show also that the forces applied at the wheel by the obstacle crossing defined in the AVTP 03- 170 are directly related to the diameter and the stiffness of the tire. The maximum forces encountered at the wheel corresponds to 2.5 G vertically and 1.5 G longitudinally. The sine wave driving and the slalom test are showing the benefits and the need for advanced hydraulic suspensions. The second simulation is the modelling of the hybrid power management of the vehicle. The simulation has been performed with the objectives to create a tool for sizing series hybrid powertrain. This simulation has also been performed with Matlab/Simulink and the Simscape Library. The tool created show that when, the vehicle is equipped with 150 kW of power generation and 300 kW of battery would be able to drive at a constant speed of 10 km/h with the terrain inputs evaluated from the literature study, but to create sufficient result the input parameters of the tools need to have a better definition.

В данной магистерской диссертации произведен обзор и анализ наземных транспортных средств, в частности колесных вездеходов на шинах сверхнизкого давления, получивших наиболее широкое распространение на территориях Крайнего Севера. Выявлены характерные особенности и условия эксплуатации автомобильного транспорта в арктической части РФ. На основании полученной информации разработана концепция вездехода на шинах сверхнизкого давления, наиболее адаптированного для использования в северных широтах. Исходя из предложенной конструкции, составлен технологический процесс изготовления и последующей сборки кузова данной колесной машины. Определены необходимые конструкционные материалы, используемые при производстве кузова вездехода. / In this master's dissertation, a survey and analysis of land vehicles, in particular wheeled all-terrain vehicles on ultra-low pressure tires, which have been most widely used in the Far North. The characteristic features and conditions of operation of motor transport in the Arctic part of the Russian Federation are revealed. Based on the information received, was developed the concept of an all-terrain vehicle on ultra-low pressure tires, most adapted for use in the northern latitudes. Proceeding from the proposed design, was compiled the technological process of manufacturing and subsequent assembly of the body of this wheeled vehicle. The necessary structural materials used in the manufacture of the body of an all-terrain vehicle are determined.