Results 21 to 30 of about 117,281 (201)

A Novel Experimental Test Bench to Investigate the Effects of Cutting Fluids on the Frictional Conditions in Metal Cutting

open access: yesJournal of Manufacturing and Materials Processing, 2020
The tribological effect of cutting fluids in the machining processes to reduce the friction in the cutting zone is still widely unknown. Most test benches and procedures do not represent the contact conditions of machining processes adequately ...
Thomas Lakner, Marvin Hardt
doaj   +1 more source

Energetics of rocked inhomogeneous ratchets [PDF]

open access: yes, 2001
We study the efficiency of frictional thermal ratchets driven by finite frequency driving force and in contact with a heat bath. The efficiency exhibits varied behavior with driving frequency.
A. Ajdari   +23 more
core   +2 more sources

A phase-field method for modeling cracks with frictional contact

open access: yes, 2019
We introduce a phase-field method for continuous modeling of cracks with frictional contacts. Compared with standard discrete methods for frictional contacts, the phase-field method has two attractive features: (1) it can represent arbitrary crack ...
Choo, Jinhyun, Fei, Fan
core   +2 more sources

Rothe method and numerical analysis for history-dependent hemivariational inequalities with applications to contact mechanics [PDF]

open access: yes, 2019
In this paper an abstract evolutionary hemivariational inequality with a history-dependent operator is studied. First, a result on its unique solvability and solution regularity is proved by applying the Rothe method.
Migorski, Stanislaw, Zeng, Shengda
core   +2 more sources

Influence of Heterogeneous Contact Stiffness and Heterogeneous Friction Coefficient on Frictional Squeal

open access: yesShock and Vibration, 2018
Contact stiffness and friction coefficient are excitation sources and key influencing factors to frictional squeal with obvious inhomogeneous characteristic that is always neglected.
Lijun Zhang, Wenbo Li, Dejian Meng
doaj   +1 more source

Projective dynamics with dry frictional contact [PDF]

open access: yesACM Transactions on Graphics, 2020
Projective dynamics was introduced a few years ago as a fast method to yield an approximate yet stable solution to the dynamics of nodal systems subject to stiff internal forces. Previous attempts to include contact forces in that framework considered adding a quadratic penalty energy to the global system, which however broke the simple - constant ...
Ly, Mickaël   +3 more
openaire   +2 more sources

Contact Hamiltonian Description of 1D Frictional Systems

open access: yesCommunications in Advanced Mathematical Sciences, 2021
In this paper, we consider contact Hamiltonian description of 1D frictional dynamics with no conserved force. Friction forces that are monomials of velocity, and sum of two monomials are considered.
Furkan Semih Dündar, Gülhan Ayar
doaj   +1 more source

Friction-induced Shear thickening: a microscopic perspective

open access: yes, 2016
We develop a microscopic picture of shear thickening in dense suspensions which emphasizes the role of frictional forces, coupling rotational and translational degrees of freedom.
Heussinger, Claus   +2 more
core   +1 more source

On the Origin of Frictional Adhesion in Geckos: Small Morphological Changes Lead to a Major Biomechanical Transition in the Genus \u3cem\u3eGonatodes\u3c/em\u3e [PDF]

open access: yes, 2017
The evolutionary history of vertebrate locomotion is punctuated by innovations that have permitted expansion into novel ecological niches. Frictional adhesion of geckos is an innovation renowned for enabling locomotion on vertical and inverted smooth ...
Gamble, Tony   +2 more
core   +1 more source

Bifurcation shifts in a rotor-stator contact system under frictional forces to higher rotational speeds caused by stator thickness

open access: yesMechanical Engineering Journal
Accurate simulations of detrimental vibrations observed in a rotor-stator contact system are beneficial. Existing contact models that consider the contact configurations between the rotor and stator cannot deal with the frictional forces simultaneously ...
Daijiroh YOSHIMORI   +2 more
doaj   +1 more source

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