Results 51 to 60 of about 376,430 (233)

Using the fractional interaction law to model the impact dynamics in arbitrary form of multiparticle collisions

open access: yes, 2004
Using the molecular dynamics method, we examine a discrete deterministic model for the motion of spherical particles in three-dimensional space. The model takes into account multiparticle collisions in arbitrary forms.
D. C. Rapaport   +9 more
core   +1 more source

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

open access: yesAdvanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source

Law of Friction: from Tribology to Tribo-Fatigue. Report 3. Experimental Studies

open access: yesМеханика машин, механизмов и материалов, 2019
To date, many laws of nature have been discovered. The knowledge of each of them led to the accelerated development of the relevant sections of Science and further, as a rule, to progress in any practical area of the community of people.
Leonid A. Sosnovskiy
doaj  

Development of hot surfaces generated by friction contacts of titanium alloy and steel

open access: yesAdvances in Mechanical Engineering, 2020
When light alloys used in coal mine, the sparks generated by mechanical friction and impacts are the main effective ignition source. While the hot surfaces are concomitant in friction process, prior to the occurrence of mechanical sparks, whether the hot
He Pan, Yang Zhang
doaj   +1 more source

Atomic simulations of kinetic friction and its velocity dependence at Al/Al and alpha-Al_2O_3/alpha-Al_2O_3 interfaces [PDF]

open access: yes, 2005
Kinetic friction during dry sliding along atomistic-scale Al(001)/Al(001) and alpha-Al2O3(0001)/alpha-Al2O3(0001) interfaces has been investigated using molecular dynamics (MD) with recently developed Reactive Force Fields (ReaxFF).
Goddard, William A., III   +4 more
core  

Frictional shear cracks

open access: yes, 2002
We discuss crack propagation along the interface between two dissimilar materials. The crack edge separates two states of the interface, ``stick'' and ``slip''. In the slip region we assume that the shear stress is proportional to the sliding velocity, i.
Brener, Efim A., Marchenko, V. I.
core   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

open access: yesAdvanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov   +3 more
wiley   +1 more source

Influence of lubrication on the friction and wear of car rolling bearings

open access: yesПроблеми трибології, 2021
The goal of the work is to develop computational and experimental approaches to determine the wear resistance of friction units with internal contact of cylinders with slip.
O. Dykha, O. Makovkin, S. Posonsky
doaj   +1 more source

Cross-sectional river shapes: A variational discharge-resistance formulation [PDF]

open access: yes, 1999
Cross-sectional river shapes were obtained from a variational principle: minimizing the bed friction for a given discharge and a given maximum lateral bed slope (angle of repose).
Beckum, F.P.H. van   +2 more
core   +1 more source

On slip pulses at a sheared frictional viscoelastic/ non deformable interface

open access: yes, 2000
We study the possibility for a semi-infinite block of linear viscoelastic material, in homogeneous frictional contact with a non-deformable one, to slide under shear via a periodic set of ``self-healing pulses'', i.e.
A. Anooshehpoor   +25 more
core   +2 more sources

Home - About - Disclaimer - Privacy