The article presents the results of computational and experimental studies of the response of torsion shafts of suspension systems of light armored vehicles to the action of loading, taking into account the complex interaction of their main elements. The study is aimed at overcoming the limitations of traditional approaches, which are mainly focused on the analysis of the torsion...
The study experimentally investigates the impact response of a beam model of the middle grate bar of an overloading screen and to determine the influence of impact energy, support compliance, and a sand interlayer on the parameters of the initial transient process. Two scale‑consistent beam models based on the “grate bar – two supports” configuration were used for physical...
Under conditions of large-scale landmine contamination, the development of efficient demining machines capable of operating in severe and uncertain environments becomes highly relevant. The reliability, productivity, and operational safety of such machines are largely determined by the parameters of their power drive systems, particularly the transmission, which provides power...
The paper considers the current state of research on hydrostatic and hydrostatic-mechanical transmissions, which are key components of modern transport and military vehicle drivetrains. It is shown that their application ensures continuously variable speed control, high tractive performance, and efficient power distribution. The analysis of scientific literature demonstrates that...
A methodology for the analysis of the non-axisymmetric thermoelastoplastic stress–strain state of shells of revolution with a branched meridian is presented. The problem is solved using the semi-analytical finite element method in combination with the Kirchhoff–Love hypotheses. The solution is obtained in a quasi-static uncoupled formulation within the framework of geometrically...
This paper presents a simulation model of an energy-efficient turbocharger-generator developed in the MATLAB/Simulink environment, in which the rotor of a conventional turbocharger is augmented with an electric motor-generator. The objective of the study is to evaluate the energetic and dynamic effects of electrifying the boost system in automotive internal combustion engines...
The paper describes a general approach to justifying progressive technical solutions. of the armored hull lightly armored vehicle from the latest materials. We are talking about high-alloy steels, alloys of various non-ferrous metals, ceramic compositions, plastics, woven and non-woven and network materials, materials with coatings and surface-strengthened using advanced...
The experience of modern warfare has shown that the principal direction of the employment of air attack means is the integrated use of cruise and ballistic missiles, unmanned aerial vehicles of various types in delivering massed strikes against critical infrastructure facilities of the country, as well as the conduct of intensive air strikes to provide air support to ground force...
In many machine-building structures, parts that are in contact interaction are widespread. In many cases, such interaction occurs on surfaces that nominally coincide or are close. That is, the gap between the bodies is nominally either zero or very small. In these cases, two factors become important factors. The first is the contact stiffness, which is determined by the...
The article examines the prospects for the application of segmented (modular) screws in equipment used in industrial engineering and applied mechanics as an alternative to traditional solutions based on solid metal or polymer structures. A concept of a screw assembled from separate unified elements is proposed, where the flight together with a shaft fragment is manufactured as a...
Article presents the design and operating principles of new type safety-overrunning clutches with axial and radial operating principle. These clutches implement the overrunning function through mechanical engagement, while the safety function is achieved by means of friction forces and the wedging effect of conical surfaces. This enables smooth, shock-free operation under...
The paper addresses the актуal scientific and technical problem of improving the performance and durability of piston rings in internal combustion engines. Particular attention is paid to reducing weight and dimensional parameters of components, enhancing fuel efficiency, and decreasing harmful emissions. It is shown that traditional materials such as cast iron and steel, despite...
This paper investigates the causes of failures in transmission units and assemblies of BTR-4 series wheeled armored personnel carriers, with particular emphasis on inter-axle and inter-wheel differentials during operation. The sources of static and dynamic loads acting on the units and assemblies of a hydromechanical transmission in a four-axle wheeled vehicle are examined. Based...
Increasing the reliability of assemblies and structures, the efficiency of machines and equipment for various purposes require the development and application of new materials that are capable of operating in difficult conditions at low or high temperatures, in aggressive environments, under heavy loads, in particular, high-strength metals and alloys, composite and non-metallic...
In the context of modern warfare, new and much higher requirements have arisen for improving the protection parameters of light armored vehicles. There has always been a need for combat armored vehicles that are sufficiently protected, provide adequate fire support for infantry, are maneuverable, and, above all, are relatively inexpensive compared to heavy tanks. Currently...
The article addresses current issues related to improving the efficiency and accuracy of evaluating the energy characteristics of transmission systems in tracked military vehicles. Modern trends in the development of armored vehicles lead to increased requirements for controllability, reliability, and energy efficiency, which limits the capabilities of traditional mechanical and...
The article examines the operational features of vehicles equipped with gasoline, diesel, hybrid, and electric powertrains in the context of current requirements for energy efficiency, cost-effectiveness, and environmental safety. Attention is focused on the fact that the comparative assessment of different powertrain types should be carried out comprehensively, taking into...
The paper reviews recent developments and publications in the field of designing a fan cooling system for the diesel engine equipped with a hydraulic fan drive. An analysis of experimental characteristics describing the variation of power unit parameters with a dual-fan cooling system installed on a wheeled armored personnel carrier is carried out. Based on the obtained results...
The article analyzes the results of studies of combined outlet of centrifugal pumps. Almost all modern studies are carried out using numerical simulation of the flow, which allows obtaining both differential and integral characteristics of the working process that takes place in the combined outlet. Comparison of the results of numerical simulation with the results of physical...
The work develops a new approach to the analysis of the stress-strain state of armored hulls of lightly armored vehicles made of unconventional, surface-hardened materials and compositions. Based on computational-experimental and computational-calculation studies, it is proposed to create express models of the stress-strain state of these armored hulls. In particular, multilayer...
Modern civil and military vehicles are operated under intensive load conditions, including contact interaction. This causes problems with their strength and durability. In particular, these are elements of turboexpander units, vehicle transmissions, diesel locomotive and tank engines, engines, suspension systems, ground robotic complexes, as well as technological systems for...
This article reviews self-propelled tractor chassis and their frame types. Promising designs of universal row-crop self-propelled machines using various frames are considered. The most common areas of application for tractor self-propelled chassis in agriculture, forestry, municipal services, and road construction are presented, utilizing a variety of specialized mounted and...
The article examines engineering trends in the design of weapons and military equipment that demonstrate a significant increase in the role of high-technology systems and innovative approaches to their development. In particular, the development of military equipment is strongly influenced by artificial intelligence technologies, robotics, new materials, and energy systems, which...
The paper employs a parametric approach to investigate the stress-strain state and critical motion regimes of rotor systems in tank engine superchargers. Using a test assembly as an example, the influence of the bearing span on the critical speeds of the rotor was determined. The impact of overall dimensions on the stress-strain state of the compressor impeller was also analyzed...
The article investigates approaches to improving the operational and energy‑performance indicators of a dry dual‑flow clutch used in robotic transmissions of modern vehicles. The relevance of the study is driven by the need to enhance functional reliability, efficiency, and uniformity of torque transfer in dual‑flow clutch systems. The object of the study is a dry dual‑flow...