Results 91 to 100 of about 376,430 (233)

Atomic-scale friction behavior of layered graphene and graphene-like BN materials modulated by interaction potential

open access: yesAIP Advances, 2017
The understanding of fundamental issues related to friction at the atomic scale remains a great challenge due to the large difference between macroscopic and microscopic frictional behaviors. Here based on first-principles calculations, the applicability
Chunqiang Zhuang, Lei Liu
doaj   +1 more source

Simulation of the small punch creep test with consideration of variation of material properties [PDF]

open access: yes, 2009
A new finite element model of the small punch creep test is described. The material constitutive relationship for creep considered is a simple Norton power law: in this study the exponent in the power law is varied for each element to simulate the random
Boyle, J., Mackenzie, D., Pan, W.
core  

On turbulent friction in straight ducts with complex cross section: the wall law and the hydraulic diameter

open access: yes, 2018
We develop predictive formulas for friction resistance in ducts with complex cross-sectional shape based on the use of the log law and neglect of wall shear stress nonuniformities. The traditional hydraulic diameter naturally emerges from the analysis as
Pirozzoli, Sergio
core   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani   +3 more
wiley   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang   +8 more
wiley   +1 more source

Handling Characteristics of Mems-Tweezers with Contact Surface Fabricated by Deep-Rie

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
Methods for enhancing the gripping ability of microtweezers are examined in terms of friction force. Two aspects are investigated experimentally. One is a method for increasing the coefficient of friction of the handling part of the microtweezers.
Satomitsu IMAI   +4 more
doaj   +1 more source

Sliding without slipping under Coulomb friction: opening waves and inversion of frictional force

open access: yes, 2016
An elastic layer slides on a rigid flat governed by Coulomb's friction law. We demonstrate that if the coefficient of friction is high enough, the sliding localizes within stick-slip pulses, which transform into opening waves propagating at intersonic ...
Yastrebov, Vladislav A.
core   +3 more sources

3D Printing of Stretchable, Compressible and Conductive Porous Polyurethane for Soft Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
A 3D‐printable porous dopamine‐polyurethane acrylate elastomer results in conductive, stretchable, and compressible structures that can be metallized in situ through catechol‐mediated silver reduction. The resulting material function as both compliant soft robot with a and strain sensors without complex assemblies, enabling fully 3D‐printed soft ...
Ouriel Bliah   +3 more
wiley   +1 more source

Sensitivity of grounding line dynamics to the choice of the friction law

open access: yesJournal of Glaciology, 2017
Basal slip accounts for a large part of the flow of ice streams draining ice from Antarctica and Greenland into the ocean. Therefore, an appropriate representation of basal slip in ice flow models is a prerequisite for accurate sea level rise projections.
JULIEN BRONDEX   +3 more
doaj   +1 more source

Equivalence of the train model of earthquake and boundary driven Edwards-Wilkinson interface

open access: yes, 2013
A discretized version of the Burridge-Knopoff train model with (non-linear friction force replaced by) random pinning is studied in one and two dimensions.
Biswas, Soumyajyoti   +2 more
core   +1 more source

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