Vibroengineering Procedia

Vibroengineering Procedia, Vol. 60, 2025, p. 229-236.Asanov Seyran, Umerov Fikret, Inoyatkhodjaev Jamshid, Bekmurodov Nodirbek, Kodirov BobiromonThis study compares the regenerative braking capability and energy efficiency of a small-class electric vehicle based on the Wuling Macaron EV with FWD or RWD engine configuration. Both drivetrain configurations were simulated under NEDC and WLTP Class 3 driving cycles using MATLAB/Simulink and parallel regenerative braking control, with the vehicle’s maximum speed limited to 100 km/h to emulate real operating conditions. Drivetrain arrangement significantly affects regenerative energy recovery. FWD had greater negative battery current peaks during deceleration, faster energy recovery, and a slower SOC decline than RWD. FWD layouts achieved up to 15 % greater regeneration energy and 3.4 percent lower net energy use under WLTP conditions. Due to better front-axle load transfer, traction and regenerative torque improve. An average driving distance of 20,000 km in Uzbekistan results in an estimated annual energy savings of 98 kWh, or 88,000 UZS (≈8 USD) per vehicle. Data shows that electric automobiles with higher motor torque and power ratings may have better regenerative braking. The results show that front-wheel drive and proper motor features improve braking energy recovery and vehicle performance more efficiently and economically for small urban electric cars.

Vibroengineering Procedia, Vol. 60, 2025, p. 353-358.Muzaffar Ubaydullaev, Elena Ruklinskaya, Umidbek Kosimov, Utkir KhalikulovAn innovative technology for the surface hardening of excavator bucket teeth by a composite carburizing method is proposed. The process is based on the application of a multilayer substrate consisting of AISI 321 stainless steel foil, carbon fiber, and borax (sodium tetraborate), followed by heat treatment in a controlled atmosphere. The experimental procedure involved the production of cast specimens in sand–clay molds and the application of various types of composite substrates. Results of microstructural examinations and hardness measurements demonstrated the high efficiency of the developed technology. It was established that the combined use of carbon fiber, metallic foil, and borax leads to the formation of a gradient hardened layer with a fine-grained structure, which ensures enhanced wear resistance and operational durability of the excavator bucket teeth.

Vibroengineering Procedia, Vol. 60, 2025, p. 641-649.Larisa Sulyukova, Zarrina AxmedjanovaThis paper addresses real-world agricultural transport logistics optimization in Uzbekistan, focusing on physical loading constraints and their impact on route efficiency. The study analyzes routing challenges specific to agricultural transportation – including vehicle capacity, delivery deadlines, and Last-In-First-Out (LIFO) loading requirements. Field measurements demonstrate that vibration exposure significantly affects product quality, with damage rates varying from 2-35 % depending on road conditions. A hybrid optimization approach combining differential evolution, genetic algorithms, and local search is proposed and validated using real operational data. Experiments on 450 delivery requests show 14.3 % distance reduction and 46 % reduction in product damage. The system achieves return on investment within 2.3 months with measurable improvements in transport efficiency and product quality preservation.

Vibroengineering Procedia, Vol. 60, 2025, p. 133-141.Abdukhamit Abdujabarov, Mashkhurbek Mekhmonov, Maqsudjon Khamidov, Mavjuda Mirkhanova, Auyezmurat YembergenovThe article presents the design of the transition section to be used in different conditions in the region of junction of roadbed and the bridge, establishment and reasons of vertical shifts under the action of vibro-dynamic forces which appear when trains are driven along transition section. Likewise, in the sections of the foundation of the roadbed and the bridge, the types and types of a variety of defects caused by this fact, such as when the pressure of the weight of constant and temporary forces dropped on the rolling stock passes the active pressure of the ground (Ea), which acts on the support of the bridge shore at the point of the passage, are provided. In order to minimize the active effort at the junction formed by soil, reinforce and make the junction location defect-free, reinforced concrete piles are driven into the embankment to act as bases of junction location between the roadbed of the railway and the bridge location and a formula of computing the spacing of the piles has been contributed taking into consideration outer influences.

Vibroengineering Procedia, Vol. 60, 2025, p. 345-352.K. K. Kadirbekova, M. M. Abdullaev, Makhbuba ZiyaevaThe study investigates the structural and functional characteristics of zirconium-niobium oxide (Zr-Nb-O) coatings deposited using a modernized UVN-75-1 physical vapor deposition (PVD) system. The influence of deposition parameters on the microstructure, phase composition, hardness, and corrosion resistance of the coatings was systematically analyzed. X-ray diffraction, Auger electron spectroscopy, and microhardness testing were used to assess structural and mechanical behavior. It was found that oxygen incorporation and the Nb content in the Zr-Nb system significantly affect coating density and phase stability. The thermally optimized coatings demonstrated enhanced hardness up to 660 HV and improved corrosion resistance compared to single-component films. The novelty of this study lies in the comprehensive evaluation of Zr-Nb-O coatings produced by magnetron PVD and in the establishment of correlations between discharge parameters and mechanical-corrosive performance. These coatings exhibit strong potential for vibration-resistant and corrosion-protective applications in transport engineering, particularly for components operating under cyclic loads and dynamic stresses.