Results 1 to 10 of about 10,515 (113)
Implementation of Dahl’s dynamic friction model to contact mechanics of elastic solids [PDF]
SN Applied Sciences, 2021 AbstractThis study presents an analytical method for the solution of dynamic frictional contact problem between a rigid punch and an isotropic elastic solid. Rigid flat punch moves over the isotropic elastic solid at a constant subsonic speed and friction force develops based on Dahl’s friction law instead of Coulomb’s dry friction law.
Mehmet N Balcı
exaly +3 more sources
How friction and adhesion affect the mechanics of deep penetration in soft solids†
Soft Matter, 2022 Friction and adhesion create an increment in penetration force with the depth of the penetrator (needle) tip. This work provides the correlation between the force increment, the material properties and the needle radius.
Mattia Bacca
exaly +4 more sources
Exploring the influence of friction in the puncture mechanics of soft solids
MeccanicaAbstract Friction is an ever-present force in our lives, affecting the interaction between objects in numerous ways. The common hypothesis of frictionless contact between a foreign rigid object (needle) and a target material during puncturing leads to a constant penetration force.
Andrea Spagnoli, Matteo Montanari
exaly +4 more sources
Slip and Friction Mechanisms at Polymer Semi-Dilute Solutions/Solid Interfaces [PDF]
Macromolecules, 2021 The role of the polymer volume fraction, $ϕ$, on steady state slippage and interfacial friction is investigated for a semi-dilute polystyrene solutions in diethyl phthalate in contact with two solid surfaces. Signicant slippage is evidenced for all samples, with slip lengths b obeying a power law dependence.
Grzelka, Marion +5 more
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Friction mechanisms at polymer–solid interfaces
Comptes Rendus. Chimie, 2005 We present series of experiments conducted on model systems consisting of smooth solid surfaces covered with end grafted polymer chains at controlled surface density, and put into contact with either a polymer melt or a crosslinked elastomer of the same chemical species, and devoted to the characterization of friction as a function of the molecular ...
Leger, L, Hervet, H, Bureau, Lionel
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Friction, 2023 AbstractHigh-temperature ablation is a common failure phenomenon that limits the service life of the transmission parts on heavy-duty machines used in heavy load, high temperature, high shock conditions due to in-sufficient supply of lubricating oil and grease.
Sheng Tan +7 more
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The Mechanical Impulse Method for Determining Dynamic Elastic Moduli and Internal Friction of Solids [PDF]
Australian Journal of Physics, 1964 The theory governing the excitation of a linear mechanical system by delta function impulse is summarized. In the case of a finite elastic rod excited by an impulse, the Fourier transform of the output function enables the frequency spectrum of the rod to be obtained.
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A Study on the Mechanical Properties of the Friction Welding with Solid Shaft of SM45C
Journal of The Korean Society of Manufacturing Technology Engineers, 2012 AbstractIn the presented study, SM45C carbon steel parts were joined by friction welding. The welding process was carried out under optimized conditions using statistical approach. The study of SM45C is conducted with various combinations of process parameters.
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Observation of a Dislocation Related Interfacial Friction Mechanism in Mobile Solid $^4$He
, 2012 We report a study of the temperature and stress dependence of the friction associated with a relative motion of two masses of solid $^4$He in contact. The situation where "two masses" coupled only by friction exists emerges spontaneously during a disordering of a single crystal contained inside a annular sample space of torsional oscillator (TO). Under
Eyal, Anna, Livne, Ethan, Polturak, Emil
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Nano-Micro LettersAbstract Solid–liquid interfaces are ubiquitous in nature and engineering, and their frictional behavior remains a key factor limiting performance gains in surface engineering. However, conventional tribology has largely focused on the effect of macroscopic variables such as surface topography, which do not account for the microscopic
Han, Yishu +3 more
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