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The aim of this study was to elaborate identification method of crew overload as a result of trinitrotoluene charge explosion under the military wheeled vehicle. During the study, an experimental military ground research was carried out. The aim of this research was to verify the mine blast resistance of the prototype wheeled vehicle according to STANG 4569 as well as the anti-explosive seat. Within the work, the original methodology was elaborated along with a prototype research statement. This article presents some results of the experimental research, thanks to which there is a possibility to estimate the crew's lives being endangered in an explosion through the measurement of acceleration as well as the pressure on the chest, head and internal organs. On the basis of our acceleration results, both effectiveness and infallibility of crew protective elements along with a blast mitigation seat were verified.

A method for the optimal redesign of mechanical systems is presented. As an application, the redesign of the gearhead gearbox of a longwall shearer is considered using an electromechanical model. This electro-mechanical model comprises the discrete model of the mechanical part (treated like a multibody system) coupled-with an electrical driving motor. The aim is to minimize the maximal value of dynamic forces during the start of the machine driven by a dynamic torque. The sensitivity analysis of the system is carried out by means of a direct differentiation method as well as an adjoint variable method. This highly nonlinear optimization problem is solved through a sequence of linear programming problems, which were solved by the Simplex method. The results of numerical calculations are presented.

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