Results 111 to 120 of about 391,243 (302)

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

Thermomechanical Simulation of Orthogonal Metal Cutting with PFEM and SPH Using a Temperature-Dependent Friction Coefficient: A Comparative Study. [PDF]

Materials (Basel), 2023
Rodríguez Prieto JM, Larsson S, Afrasiabi M.   +2 more
europepmc   +1 more source

Experimental analysis and modeling of orthogonal cutting using material and friction models [PDF]

, 2007
In this study, a process model for orthogonal cutting processes is proposed. The model involves the primary and secondary deformation zones. The primary shear zone is modeled by a Johnson-Cook constitutive relationship and a shear plane having constant ...
Budak, Erhan, Ozlu, Emre, Özlü, Emre
core  

Triply‐Twinned Metamaterials: Unraveling the Mechanics and Failure Pathways Through High‐Resolution XCT

Advanced Materials, EarlyView.
Triply‐twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High‐resolution synchrotron XCT and image‐based simulations reveal how meta‐grain architecture, defects, and AM build orientation govern failure pathways ...
David McArthur, George Maddison, Jaianth Vijayakumar, Paul Tafforeau, Kathy Christofidou, Peter David Lee, PJ Tan, Chu Lun Alex Leung   +7 more
wiley   +1 more source

Measurement of the equivalent friction coefficients of ball bearings based on the variations in kinetic energy

Friction
Friction energy consumption is the primary cause of energy loss in rolling bearings, and friction characteristics are critical indicators of rolling bearing quality.
Panlong Wu, Chunlei He, Zhiyang Ren, Qiang Feng, Guang Chen, Chengzu Ren   +5 more
doaj   +1 more source

Study of CFD-DEM on the Impact of the Rolling Friction Coefficient on Deposition of Lignin Particles in a Single Ceramic Membrane Pore. [PDF]

Membranes (Basel), 2023
Wang H, Wang X, Wu Y, Wang S, Wu J, Fu P, Li Y.   +6 more
europepmc   +1 more source

The Friction Coefficient of Fasteners

Transactions of the Japan Society of Mechanical Engineers, 1977
(1) The influence of the tightening velocity on the friction coefficient of fastener μ was investigated. (2) The influence on μ of the lubrication state, the surface treatment and the material combination of bolts and nuts was examined from the viewpoints of the central tendency and the dispersion.
openaire   +3 more sources

Friction and deformation behavior of single-crystal silicon carbide [PDF]

Friction and deformation studies were conducted with single-crystal silicon carbide in sliding contact with diamond. When the radius of curvature of the spherical diamond rider was large (0.3), deformation of silicon carbide was primarily elastic.
Buckley, D. H., Miyoshi, K.
core   +1 more source

Hydrogelation via Supramolecular Copolymerization of Structural Water within Adaptive Metal–Organic Fibers

Advanced Materials, EarlyView.
Structural water is harnessed as an active co‐monomer to drive supramolecular polymerization in bulk water. Zinc(II) Salphen complexes confine water molecules to form hollow, metal–organic nanofibers that assemble into adaptive hydrogels with thermoresponsive mechanics and selective chiral recognition.
Merlin R. Stühler, Hesam Makki, Tarek Hilal, Debsena Chakraboty, Mathias Dimde, Kai Ludwig, Rainer Haag, Sabine Rosenfeldt, Dorothee Silbernagl, Andreas Schäfer, Alex J. Plajer   +10 more
wiley   +1 more source

The influence of the pavement friction coefficient evolution caused by traffic flow on the risk of motorway horizontal curves. [PDF]

PLoS One, 2022
Xu G, Xu J, Shan H, Gao C, Ran J, Ma Y, Yao Y.   +6 more
europepmc   +1 more source