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Документ Application of the embedded mechanical systems for ensuring the preservation of military equipment products under dynamic impacts(Національний технічний університет "Харківський політехнічний інститут", 2018) Kovtun, Anatoliі; Tabunenko, Vоlоdimir; Melnikov, S.In the process of providing combat operations, the designs of military equipment products are subject to significant effects of both regular and non-regular dynamic loads, which can lead to their mechanical destruction. Among the dynamic loads acting on military hardware products, it is possible to identify short-term, caused by explosive and shock effects, and long-term vibrational loads that arise during transportation. As a result, there is the problem of ensuring the conservation of mechanical products of military equipment under dynamic impacts during the preparation and conduct of combat operations. The impact of a shock wave on military hardware products has a complex dynamic nature, depending on the wave parameters and the features of the object under consideration. Various results of this impact are possible, such as product destruction, turnover, change in the nature of motion, and others. The conservability of products with respect to the air shock wave is established experimentally. In addition to explosive loads, shock loads affect military equipment. In accordance with this, consider the local and general action of the thrust. Local action is characterized by the occurrence of local deformations and structural damage. The general action is accompanied by significant general deformations and destruction of the entire construction. The effect of prolonged vibration loads on military hardware products is mainly related to transportation processes. With prolonged cyclic loading, the destruction of the material of the structural elements can occur also at a stress amplitude less than the elastic limit. The article gives a definition of embedded mechanical systems and formulates their basic properties, which allow us to propose a hypothesis that in order to ensure the mechanical storage of products subject to dynamic influences, it is necessary to use embedded mechanical systems. Based on the nesting principle of mechanical systems, a method for increasing the retentivity of military equipment was proposed. The use of nested mechanical systems makes it possible to ensure the mechanical retention of military equipment by reducing the total energy supplied to the allowable value for the product to be stored.Документ Substantiation of the possibility of accelerated refueling of auto-armored vehicles in conditions of special operations(NTU "KhPI", 2017) Kovtun, Anatoliі; Tabunenko, VоlоdimirConducting special operations to neutralize illegal armed groups that operate over wide areas is a challenging task. Its successful solution requires a comprehensive support of the operation. Conducting special operation is not possible without a clear and permanent system of logistics. The course and outcome of the operation depends on how welland timely the troops will be provided with everything necessary. The current battle is characterized by high dynamism, strength and short-term, abrupt changes in the situation. Modern and fast refueling of the armored vehicles with fuel in combat is one of the basic conditions for support combat readiness. Reduction of time filling by fuel armored vehicles is an important task that affects of the success of military operations. Analysis of existing methodsof fueling vehicles (armored vehicles) in field conditions, with the corresponding not hiding signs for refueling fuel technology, with a concentration on technology and site servicing considerable time toconduct refueling in terms of illegal armed groups, shows the vitality of means low servicing. To improve the survivability of the system "vehicle-vehicle refueling" by reducing time refueling dispersal vehicles during refueling for fuel flow can use the mechanical energy of the car, which fueled (without using additional means of filling). However, as the capacitances of fuel used in flexible containers that provide fuel displacement are at running wheel of the car, which fueled. The work proved and proposed a new way to deliver fuel and rapid refueling of cars (armored vehicles) in the field conditions during the special operation that will reduce the likelihood of defeats increased survivability and technology, to refuse filling existing methods. Resultsof calculation are consistent with previous experimental studies that argue that the elastic reservoir is not broken when hitting the wheel of the car and allow you to use it to determine the parameters of armored vehicles. Using the method of rapid refueling of cars would reduce the likelihood of defeat armored vehicles cars and increase its survivability by 15-25% in contrast to the existing methods of filling.Документ Theorem about the change of resonance frequencies of vibrations of mechanical systems with friction(НТУ "ХПІ", 2018) Kovtun, Anatoliі; Tabunenko, Vоlоdimir; Parkhomchuk, AlexanderThere are the insufficiently known phenomena, resulting in the operating damages of knots and details of machines, among that most dangerous are a friction, wear, and dynamic tiredness. They behaves to the mechanical systems, the elements of that are bound by inter se forces of dry friction, that is widely widespread in a technique, especially in the knots of contact of elements with a friction. It results in the origin of new effects the account of that is needed for providing of increase of reliability of work of machines and mechanisms. At the decision of practical tasks usually use the simplified charts that are characterized the eventual number of degrees of freedom, although the real mechanical system has an endless large number of degrees of freedom. The study of vibrations of the mechanical systems on such models allows to get basic conformities to law of influence of interesting factors on dynamic descriptions of the system. In the theory of vibrations are of interest research of questions of cooperation of forces of friction, operating in the system, and force vibrations. However paid attention to the question of influence of forces of friction on the size of frequency of resonant vibrations of the mechanical systems. Under the inlaid constructions we understand such, when one elements of construction are located into other and here constrained inter se on opposite surfaces by forces of dry friction. The selection of class of the inlaid constructions, among the nonlinear mechanical systems, requires the row of clarifications. Consists the feature of design of one mass models of the inlaid constructions in that they have two degrees of freedom. It results in appearance at the inlaid constructions of new properties, what and dedicated hired.Документ Modeling of the high-speed punching drummer barriersas a set of hollow cylinders(НТУ "ХПІ", 2017) Kovtun, Anatoliі; Tabunenko, VоlоdimirWere analyzed the characteristics of damaging elements of artillery systems and small arms. Were analyzed the characteristics and structures of personal Armor protection. Modern protection has layered structure. The main blow of high speed sub munitions takes the hard plate. They can be made of metal or high-strength double-layer panels. At a meeting with the panel the toe of bullet was destroyed. As a result of growing area of interaction between the bullet and the panel, there is a deflection and uncoupling ceramic bullet while destruction. When you hit the drummer in the obstacle created several types of wave perturbations that propagate with different velocities. These effects cause is a complex stress state structure, whose intensity decreases rapidly with time. The aim of the article is to investigate the interaction of highstriker with a protective barrier in the form of a set of hollow cylinders. The methods that are used: Improving personal armor protection can be achieved by applying the optimum combination of new materials and advanced structural and circuit design. Character penetration drummer an obstacle may change if the obstacle is to imagine a structure that consists of a set of hollow cylinders. Considered the process of interaction, of high-speed impactor, with a protective barrier, in the form of a set of hollow cylinders. In contact with the surface layer drummer obstacles by having an expanded, drummer enters the hollow cylinder, which closely hugs the side surface of the impactor, creating resistance to motion. When moving drummer in the cylinder is converting kinetic energy into energy impactor cylinder and deformation work to overcome friction. Thus, the energy of drummer extinguished intermediate layer and redistributed to the power frame inner layer. following results are obtained. The proposed a model to determine the depth of penetration drummer an obstacle in the form of a set of hollow cylinders. There are results of the calculations. It is proposed to further improve the protection of personal Armor achieve by applying the optimum combination of new materials and advanced structural and circuit design.