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To address the wear life prediction challenge of Guide Cones in passive compliant connectors under dynamic loads within specialized equipment, this study proposes a dynamic wear modeling and life assessment method based on the improved Archard model. Through integrated theoretical modeling, finite element simulation, and experimental validation, we establish a bidirectional coupling framework analyzing dynamic contact mechanics and wear evolution. By developing phased contact state identification criteria and geometric constraints, a transient load calculation model is established, revealing dynamic load characteristics with peak contact forces reaching 206.34 N. A dynamic contact stress integration algorithm is proposed by combining Archard's theory with ABAQUS finite element simulation and ALE adaptive meshing technology, enabling real-time iterative updates of wear morphology and contact stress. This approach constructs an exponential model correlating cumulative wear depth with docking cycles (R = 0.997). Prototype experiments demonstrate a mean absolute percentage error (MAPE) of 14.6% between simulated and measured wear depths, confirming model validity. With a critical wear threshold of 0.8 mm, the predicted service life reaches 45,270 cycles, meeting 50-year operational requirements (safety margin: 50.9%). This research provides theoretical frameworks and engineering guidelines for wear-resistant design, material selection, and life evaluation in high-reliability automatic docking systems.
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http://dx.doi.org/10.3390/polym17152091 | DOI Listing |
JB JS Open Access
September 2025
Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Science, Niigata, Japan.
Background: Lower extremity alignment in knee osteoarthritis (OA) is conventionally assessed using standing radiographs. However, symptoms often manifest during gait. Understanding dynamic alignment during gait may help characterize disease progression and inform treatment strategies.
View Article and Find Full Text PDFLangmuir
September 2025
School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, P. R. China.
Understanding the mechanism of action of graphene oxide (GO)-based lubrication materials is of great significance to effectively suppress the surface damage accumulation of bearing steel during service. However, GO typically exhibits weak interfacial adsorption and poor dispersion stability, severely limiting its ability to form a dynamic tribofilm during friction. In this study, we synthesized an efficient lubricant, oleylamine-grafted chlorinated graphene (OA/Cl-GO), using GO as the carrier and introducing lipophilic terminal groups through chlorination and interfacial covalent modification.
View Article and Find Full Text PDFACS Omega
August 2025
Department of Mechanical and Industrial Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia.
Cellulose, a sustainable and biodegradable biopolymer, has emerged as a promising candidate for lubricant additives due to its ability to form protective boundary layers, reduce surface roughness, and enhance load-bearing capacity. This review explores the underlying tribological mechanisms, such as the mending effect, physical adsorption, and hydrogen bonding, which contribute to the performance of cellulose-based lubricants. Various applications are then discussed across liquid, semisolid, and solid lubrication systems.
View Article and Find Full Text PDFSensors (Basel)
August 2025
School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China.
In response to the instability fluctuations and erosion characteristic changes in pantograph-catenary system (PCS) arcs induced by humidity variations in an open environment, a single-variable controlled experimental approach based on multi-source data fusion is proposed. This study innovatively establishes a humidity-controlled reciprocating current-carrying arc initiation test platform, integrating digital image processing with the dynamic analysis of multi-physics sensor signals (current, voltage, temperature). The study quantitatively evaluates the arc motion characteristics and the erosion effects on the frictional contact pair under different relative humidity levels (30%, 50%, 70%, and 90%) with a DC power supply (120 V/25 A).
View Article and Find Full Text PDFPolymers (Basel)
August 2025
Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia.
Composite materials have been increasingly used in various branches of industry, transport, construction, and medicine-as well as in other sectors of the economy and science-in recent decades. A significant advancement in the improvement of composite material characteristics has been achieved through the use of nanoparticles, which substantially enhance the properties of the base material, whether it is the matrix or the reinforcing phase in hybrid composites. The broad application of polymers and polymer composites in many areas of engineering has had a significant impact on reducing friction and wear, improving the thermal characteristics of individual components and entire technical systems, enhancing electrical conductivity, reducing the specific weight of components, lowering noise and vibration levels, and ultimately decreasing fuel consumption, production costs, and the costs of operation and maintenance of technical systems.
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