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The dynamic characteristics of a numerically controlled woodworking center are experimentally studied. Specifically, the amplitude-frequency characteristics, the resonant frequencies in various directions, the dynamic and static rigidity, the degree of damping of vibrations, and the dynamic coefficient of the wood working center are subjected to modal analysis. The behavior of the system components is investigated under the action of external excitation and in end milling.

Abstract-The paper presents the results of physical modeling of the wind pressure. Systematic data are obtained for the pressure coefficient distribution over the sides of the differentsize building models under the airflow conditions. These conditions are provided by an obstacle situated in front of the building model. The obstacle has the same geometrical parameters as the building and is longitudinally and transversely displaced relative to the airflow direction.

Abstract. The paper presents experimental results of a physical simulation and computations of aerodynamic and thermal interference of turbulent flows over two building models. The experimental setup, conditions, and results are described, and the evaluation of obtained results is given in this paper. Conclusions are drawn on the basis of this research.

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The article presents the results of experimental studies to establish the dependence of dynamic coefficients and heat losses on wind flow when blowing tandem building models in the form of two square prisms, as well as the effect of the relative position and angle of attack of the air flow on these parameters.

The paper considers the dynamic and thermal interference effects on two neighbouring building models in the form of square prisms arranged at a short distance from each other. It is shown how relative positions of the models affect the specific phenomena caused by the airflow interactions.