Results 21 to 30 of about 388,551 (295)

From the Fan-KKM principle to extended real-valued equilibria and to variational-hemivariational inequalities with application to nonmonotone contact problems

open access: yesFixed Point Theory and Algorithms for Sciences and Engineering, 2022
This paper starts off by the celebrated Knaster–Kuratowski–Mazurkiewicz principle in the formulation by Ky Fan. We provide a novel variant of this principle and build an existence theory for extended real-valued equilibrium problems with general, then ...
Joachim Gwinner
doaj   +1 more source

Computational and experimental diagnostics of the shear properties of greases [PDF]

open access: yesMATEC Web of Conferences, 2021
The study of the properties of consistent and liquid oils is currently receiving much attention in tribology. This is because lubrication is one of the most effective ways to improve machine durability.
Dykha Aleksandr   +3 more
doaj   +1 more source

Multi-physics simulation of friction stir welding process [PDF]

open access: yes, 2009
Purpose: The Friction Stir Welding (FSW) process comprises of several highly coupled (and non-linear) physical phenomena: large plastic deformation, material flow transportation, mechanical stirring of the tool, tool-workpiece surface interaction ...
Hamilton, R., Li, Hongjun, Mackenzie, D.
core   +1 more source

A Discrete Approach to Meshless Lagrangian Solid Modeling

open access: yesComputation, 2017
The author demonstrates a stable Lagrangian solid modeling method, tracking the interactions of solid mass particles rather than using a meshed grid. This numerical method avoids the problem of tensile instability often seen with smooth particle applied ...
Matthew Marko
doaj   +1 more source

Experimental validation of a new biphasic model of the contact mechanics of the porcine hip [PDF]

open access: yes, 2014
Hip models that incorporate the biphasic behaviour of articular cartilage can improve understanding of the joint function, pathology of joint degeneration and effect of potential interventions.
Anderson AE   +21 more
core   +1 more source

Moving contact line problem: Advances and perspectives

open access: yesTheoretical and Applied Mechanics Letters, 2014
The solid-liquid interface, which is ubiquitous in nature and our daily life, plays fundamental roles in a variety of physical-chemical-biological-mechanical phenomena, for example in lubrication, crystal growth, and many biological reactions that govern
Yapu Zhao
doaj   +1 more source

A meshfree computational framework for the numerical simulation of the solid-state additive manufacturing process, additive friction stir-deposition (AFS-D)

open access: yesMaterials & Design, 2021
In this work, a fully coupled thermo-mechanical meshfree approach is developed for the first time to simulate a solid-state layer-by-layer additive manufacturing process, Additive Friction Stir-Deposition (AFS-D). The meshfree method in this present work
G.G. Stubblefield   +4 more
doaj   +1 more source

Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations

open access: yesLubricants, 2022
Multi-leaf journal foil bearing (MLJFB) is well known for its applications in the air cycle machines (ACMs) of airplanes. However, its frictional energy dissipation mechanism of overlapped foils has not been theoretically studied and is still not clear ...
Changlin Li   +3 more
doaj   +1 more source

Elastic Deformation of Soft Coatings Due to Lubrication Forces

open access: yes, 2017
Elastic deformation of rigid materials with soft coatings (stratified materials) due to lubrication forces can also alter the interpretation of dynamic surface forces measurements and prevent contact formation between approaching surfaces.
Frechette, Joelle   +2 more
core   +1 more source

Coupled irradiation-thermal-mechanical analysis of fuel in solid core of heat pipe cooled reactor

open access: yesHe jishu
BackgroundHeat pipe cooled reactor (HPR) has many characteristics, such as reliability, inherent safety, small volume, modularity, and solid core. The nuclear fuel of solid core is seriously affected by high temperature, strong irradiation, and solid ...
YANG Xuan   +9 more
doaj   +1 more source

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