Results 31 to 40 of about 157,871 (287)

Plane problem of discrete environment mechanics

open access: yesПроблеми трибології, 2022
Many engineering problems related to the design of structures and machines, the mathematical description of technological processes, etc., are reduced to the need to solve a plane problem for materials with a significant effect of internal friction on ...
O.V. Bagrii
doaj   +1 more source

Technological features of production of copper-based composites reinforced with cast iron granules by means of casting

open access: yesЛитьë и металлургия, 2019
Increasing the operational reliability of friction units is one of the priorities for mechanical engineering, which requires the creation of effective tribotechnical materials.
A. S. Kalinichenko   +3 more
doaj   +1 more source

Numerical comparison between Hashin and Chang-Chang failure criteria in terms of inter-laminar damage behavior of laminated composite

open access: yesMaterials Research Express, 2021
In this paper, a general three-dimensional finite element model composed of eight-node three-dimension cohesive elements and eight-node solid elements with reduced integration for low-velocity impact analysis of composite materials is established ...
J R Shao, N Liu, Z J Zheng
doaj   +1 more source

Recent Milestones in Unraveling the Full-Field Structure of Dynamic Shear Cracks and Fault Ruptures in Real-Time: From Photoelasticity to Ultrahigh-Speed Digital Image Correlation [PDF]

open access: yes, 2020
The last few decades have seen great achievements in dynamic fracture mechanics. Yet, it was not possible to experimentally quantify the full-field behavior of dynamic fractures, until very recently.
Lapusta, N., Rosakis, A. J., Rubino, V.
core  

Stochastic Properties of Static Friction [PDF]

open access: yes, 2020
The onset of frictional motion is mediated by rupture-like slip fronts, which nucleate locally and propagate eventually along the entire interface causing global sliding.
Albertini, Gabriele   +3 more
core   +3 more sources

Static and Dry Friction due to Multiscale Surface Roughness

open access: yes, 2008
It is shown on the basis of scaling arguments that a disordered interface between two elastic solids will quite generally exhibit static and "dry friction" (i.e., kinetic friction which does not vanish as the sliding velocity approaches zero), because of
C. Grossiord   +14 more
core   +1 more source

Numerical modeling of friction stir welding using the tools with polygonal pins

open access: yesDefence Technology, 2015
Friction stir welding using the tools with polygonal pins is often found to improve the mechanical strength of weld joint in comparison to the tools with circular pins. However, the impacts of pin profile on the peak temperature, tool torque and traverse
M. Mehta, G.M. Reddy, A.V. Rao, A. De
doaj   +1 more source

The Effect of Bubbles on Particle Migration in Non-Newtonian Fluids

open access: yesSeparations, 2021
The movement of the gas–liquid interface caused by the movement of the bubble position will have an impact on the starting conditions for particle migration.
Jie Shan, Xiaojun Zhou
doaj   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Fault reactivation by fluid injection: Controls from stress state and injection rate [PDF]

open access: yes, 2018
We studied the influence of stress state and fluid injection rate on the reactivation of faults. We conducted experiments on a saw-cut Westerly granite sample under triaxial stress conditions.
Brantut, Nicolas   +2 more
core   +2 more sources

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