Results 61 to 70 of about 26,650 (306)

A unified approach to unbiased frictional contact modelling from first-order to higher-order finite elements

open access: yes
Contact modelling is a critical part of simulations used in the design and development of complex engineering systems, as contact is the principal method of force transmission between solids.
Sahu, Indrajeet
core   +1 more source

Stima della potenza dissipata per attrito durante i terremoti: confronto tra faglie sperimentali e naturali. = Estimate of frictional seismic power dissipation from natural and experimental faults. [PDF]

open access: yes, 2012
In the last decades, several approaches were applied to understand the physics of seismic faulting. In the field, the recognition of pseudotachylytes (solidified friction melts produced during seismic slip) which record seismic ruptures along a fault ...
Castagna, Angela
core  

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş   +2 more
wiley   +1 more source

Analysis of a Dynamic Viscoelastic Contact Problem with Normal Compliance, Normal Damped Response, and Nonmonotone Slip Rate Dependent Friction

open access: yesAdvances in Mathematical Physics, 2016
We consider a mathematical model which describes the dynamic evolution of a viscoelastic body in frictional contact with an obstacle. The contact is modelled with a combination of a normal compliance and a normal damped response law associated with a ...
Mikaël Barboteu, David Danan
doaj   +1 more source

Contact numbers in packings of frictional cylinders [PDF]

open access: yesEPJ Web of Conferences
The mechanical stability of a granular system depends on the average number of contacts Z between its particles. For most particle shapes, predicting Z as a function of the average volume fraction ϕ is complicated by the spatial correlations between ...
Schröter Matthias   +2 more
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

open access: yesAdvanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal   +3 more
wiley   +1 more source

A general model for frictional contacts in colloidal systems

open access: yesCommunications Physics
In simulations of colloidal matter, frictional contacts between particles are often neglected. For spherical colloids, such an approximation can be problematic, since frictional contacts couple translational and rotational degrees of freedom, which may ...
Kay Hofmann   +3 more
doaj   +1 more source

The influence of frictional facing thickness on the contact pressure distribution of multi-disc dry clutches [PDF]

open access: yesFME Transactions, 2018
Frictional heat is generated when the clutch starts to engag. As a result of this operation the surface temperature is increased rapidly due to the difference in speed between the driving and driven parts.
Abdullah Oday I.   +2 more
doaj  

Improvement technique of tangential force between wheel and rail by injecting dry gas less than 30% humidity

open access: yesNihon Kikai Gakkai ronbunshu, 2020
This paper presents a basic study for developing a new adhesion improvement method for railway vehicles, focusing on the tangential force characteristics between wheels and rails.
Daisuke YAMAMOTO
doaj   +1 more source

Ultrasonic Reflection for Measurement of Oil Film Thickness and Contact between Dissimilar Materials [PDF]

open access: yes, 2012
The contact between dissimilar materials occurs in many machine elements where one of the contacting parts is manufactured from low modulus materials such as lip seals, o-rings, and metal on polymer prosthetic hip joints.
Gasni, Dedison
core  

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