Experimental study and model prediction of the influence of different factors on the mechanical properties of saline clay by Hui Cheng, Lingkai Zhang, Chong Shi, Pei Pei Fan

“…The findings indicate the following: (1) Cohesion in direct shear tests has a linear negative correlation with water content and a positive correlation with dry density and initially decreases with increasing salt content until 2%, after which it increases. The internal friction angle initially increases and then decreases with increasing water content, reaching a peak at the optimal water content, and then gradually increases with dry density while initially decreasing, followed by an increase in salt content, stabilizing thereafter. …”
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Profiling Near-surface Winds on Mars Using Attitude Data from Mars 2020 Ingenuity by Brian Jackson, Lori Fenton, Travis Brown, Asier Munguira, German Martinez, Claire Newman, Daniel Viúdez-Moreiras, Matthew Golombek, Ralph Lorenz, Mark D. Paton, Dylan Conway

“…For flights during which we have MEDA data to compare to, inferred wind speeds imply friction velocities >1 m s ^−1 and roughness lengths >10 cm, which seem implausibly large. …”
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Combined multi-scale characterization of pores in ultra-thick coal seams of Jurassic Xishanyao Formation, Tiaohu-Malang sags, Santanghu Basin by Yue CHEN, Qiqi LEI, Dongmin MA, Xin WANG, Xinggang WANG, Diefang HUANG, Gaoxiang RONG

“…The surface of the 9-1 coal sample contains a large number of mineral crystal particles, with well-developed pores, breccia pores, friction holes, and micro-fractures, displaying a distinct pore-fracture topological structure. …”
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Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF by Dandan Zhang, Qiang Li, Chuntao Chang, Guan Zhang, Xu Ma, Rongze Sun

“…The dry sliding wear test demonstrates that the Mn0.5 coating demonstrates superior wear resistance with a significantly lower average friction coefficient of 0.433 and wear rate of 9.7 × 10−5 mm3·N−1·m−1 compared to both the Mn0 coating and 304 stainless steel. …”
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The unseen perils of oral-care products generated micro/nanoplastics on human health by Utsa Saha, Snehasmita Jena, Faizan Zarreen Simnani, Dibyangshee Singh, Anmol Choudhury, Shaikh Sheeran Naser, Sudakshya S. Lenka, Apoorv Kirti, Aditya Nandi, Adrija Sinha, Swadheena Patro, Małgorzata Kujawska, Mrutyunjay Suar, Nagendra Kumar Kaushik, Aishee Ghosh, Suresh K. Verma

“…Particles from sources like toothpaste, toothbrushes, orthodontic implants, and denture materials are generated through mechanical friction, pH changes, and thermal fluctuations. These processes cause surface stress, weaken material integrity, and induce wear, posing health risks such as exposure to harmful monomers and additives, while contributing to environmental contamination. …”
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Creep enhancement and sliding in a temperate, hard-bedded alpine glacier by J.-P. Roldán-Blasco, A. Gilbert, L. Piard, F. Gimbert, C. Vincent, O. Gagliardini, A. Togaibekov, A. Togaibekov, A. Walpersdorf, N. Maier

“…Our study provides further evidence that borehole inclinometry, combined with full-Stokes flow modeling, allows for the constraining of both ice rheology and basal friction at scales that cannot be inferred from surface velocity measurements alone.…”
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Role of stability analysis and waste discharge concentration of ternary hybrid nanofluid in a non-Newtonian model with slip boundary conditions by Nurhana Mohamad, Shuguang Li, Umair Khan, Anuar Ishak, Ali Elrashidi, Mohammed Zakarya

“…Trio slip parameters reduce shear stress, heat, and mass transfer rates, while the mixed convection parameter enhances the skin friction coefficient in the assisting flow and diminishes it in the opposing flow. …”
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Influence of Ni, Al, W doping on microstructure, corrosion and wear resistance of HVOF spraying Fe-based amorphous alloy coatings by Chengwu Zhang, Lei Xie, Qiang Li, Guan Zhang, Chuntao Chang, Hongxiang Li, Xu Ma, Lin Liu

“…Dry wear tests revealed that among these Fe-based AACs, the W-doped AAC exhibited the superior wear resistance, with the lowest coefficient of friction (0.42) and wear rate (2.8 × 10−5 mm3·N−1·m−1), because of higher amorphous content and higher hardness. …”
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Gravitational wave luminosity distance for Starobinsky gravity in viscous cosmological models by Jia-nan Chi, Ya-Bo Wu, Yu Sang, Xue Zhang, Yi-liang Hu, Wen-zhong Liu, Bo-hai Chen

“…Concretely, on the basis of the propagation equation of the metric perturbation derived by using transverse-traceless gauge for the linear perturbation of the metric in FRW background, we obtain the analytical expressions of the modified friction term $$\delta (z)$$ δ ( z ) and the ratio $$d_L^{GW}(z)/d_L^{EM}(z)$$ d L GW ( z ) / d L EM ( z ) of GW to electromagnetic (EM) wave luminosity distance, and find that they only depend on the SG model parameter $$\alpha $$ α and the shear viscous coefficient $$\eta $$ η , regardless of the bulk viscous coefficient $$\zeta $$ ζ . …”
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Studies on wear resistance of the radial bearing design taking into account rheological properties of micropolar lubricant by M. A. Mukutadze, H. N. Abdulrahman, V. E. Shvedova, G. A. Badakhov, N. V. Zinoviev

“…The novelty of the work lies in the concretization of the technique of engineering calculations for the design of an effective radial bearing with an antifriction polymer coating with an axial groove on the bearing surface of the bearing bush, taking into account the dependence of the rheological properties of a micropolar lubricant on pressure and temperature in a turbulent mode, which makes it possible to estimate the value of the main operational characteristics: hydrodynamic pressure, load ability and coefficient of friction, as well as to expand the scope of practical application of models for engineering calculations. …”
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Effect of Moisture Content on the Shear Behaviour of a Completely Decomposed Granite: An Experimental Study by Pan Liu, Jinhong Lin, Yang Wang, Xueqiang Yang

“…The test results showed that the increasing moisture content could obviously weaken the shear strength, cohesion, and frictional angle. Two linear equations were proposed for estimating the cohesion and the frictional angle at any moisture content in the field. …”
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Optimal Stroke Path for Reciprocating Heat Engines by Mahmoud Huleihil

“…This results from minimizing frictional losses. The purpose of this study is to determine piston trajectories that are optimal for noncombustion strokes in reciprocating engines, in the sense of minimizing frictional dissipation and hence maximizing efficiency and power. …”
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APPLICATION OF ANTIFRICTION ALUMINIUM-SILICON ALLOY by V. Ju. Stetsenko, A. I. Rivkin

“…It is shown that antifriction aluminium-silicon alloy is perspective material for change of the parts of heavy and expensive bronze in different frictional units of machines and mechanisms.…”
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A Binary Medium Model for Frozen Silty Sand Simplified by Breakage Parameter by Shuming Zhang, Guanlu Jiang, Junfeng Cai, Xiongwei Ye, Bin Luo, Shengyang Yuan

“…In the plastic deformation stage, the stress sharing ratio of the bonded element decreases and that of the frictional element increases. In the strain softening stage, the stress sharing ratio of the bonded element decreases rapidly, while that of the frictional element increases rapidly. …”
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Modeling and Experimental Study on Dynamic Characteristics of Dual-Mass Flywheel Torsional Damper by Long Chen, Wen-ku Shi, Zhi-yong Chen

“…Secondly, the arc spring is analyzed by the discrete element method. For the different frictional torques in the working process, the linear fitting and equivalent energy methods are used to model the frictional torque under the dynamic condition of the arc spring. …”
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Shear Strength of Compacted Clays as Affected by Mineral Content and Wet-Dry Cycles by Frederick Nai Charkley, Kunyong Zhang, Guoxiong Mei

“…Generally, montmorillonite-dominated mixtures were less susceptible to the changes in cohesion strength than kaolin-dominated mixtures, and the reduction in frictional strength was relatively insignificant.…”
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Deformation and Failure Characteristics of Soil-Rock Mixture considering Material Composition and Random Structure by Shengnian Wang, Tingting Ji, Qinpei Xue, Zhifu Shen, Qiang Zhang

“…The soil-rock mixture is a cohesive-frictional geomaterial subjected to impacts of composition and structure seriously. …”
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Study on the Different Effects of Power and Trailer Wheelsets on Wheel Polygonal Wear by X. N. Zhao, G. X. Chen, Z. Y. Huang, C. G. Xia

“…The wheels of power and trailer wheelset show different polygonal characteristics since their structures are obviously different. Therefore, the frictional self-excited vibration models of wheelset-track systems are established based on the viewpoint of the frictional self-excited vibration in reducing the wheel polygonal wear. …”
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METROLOGICAL MAINTENANCE OF SIMULATORS WITH MANY AMOUNTS OF FREEDOM by N. B. Sotsky

“…On the basis of carried out research the concept of frictional power simulators with many amounts of freedom is offered and realized.…”
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Research on the Distribution Regularity of Air Volume in the Pipelines of Mining Ventilation Clothing by Bo You, Jiao Yang, Yixin Zhang, Gang Li, Xuemin Zeng, Siqi Wang, Xiao Luo

“…Based on the data obtained from the transverse type simulation, the air volume of the pipelines airflow is inversely proportional to the frictional resistance along the course.…”
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