Results 11 to 20 of about 2,247,567 (328)

Experimental studies of scale effects on shear strength, and deformation of rock joints [PDF]

open access: yes, 1980
The effect of scale on shear strength is studied by performing direct shear tests on different sized samples of large joints. A rubber moulding system is used to obtain impressions of the roughness from a variety of natural joint surfaces.
Bandis, Stavros
core   +6 more sources

Friction of Shear-Fracture Zones [PDF]

open access: yesPhysical Review Letters, 2017
A shear fracture of brittle solids under compression undergoes a substantial evolution from the initial microcracking to a fully formed powder-filled shear zone. Experiments covering the entire process are relatively easy to conduct, but they are very difficult to investigate in detail. Numerically, the large strain limit has remained a challenge.
Pylväinen, J. I.   +3 more
openaire   +4 more sources

Viscoelastic behaviour of basaltic lavas. [PDF]

open access: yes, 2004
The rheological properties of basaltic lavas from Etna, Hawai′i and Vesuvius have been investigated at temperatures between 500 and 1150°C using a small-strain oscillatory shear. The viscoelastic response of the lavas to small, forced, sinusoidal torques
James, M R   +3 more
core   +4 more sources

Frictional shear cracks [PDF]

open access: yesJournal of Experimental and Theoretical Physics Letters, 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.e. the linear viscous friction law.
Brener, Efim A., Marchenko, V. I.
openaire   +2 more sources

Dilatancy and friction in sheared granular media [PDF]

open access: yesThe European Physical Journal E, 2000
10 ...
Lacombe, F.   +2 more
openaire   +2 more sources

Friction by Shear Deformations in Multilayer Graphene [PDF]

open access: yesThe Journal of Physical Chemistry C, 2012
We present accurate calculations of friction in graphene films in configurations simulating the presence of an anchoring substrate. We find that a slider induces both out-of-plane and shear deformations, which increase with the thickness of the supported film.
REGUZZONI, MARCO   +3 more
openaire   +5 more sources

Revealing the frictional transition in shear-thickening suspensions [PDF]

open access: yesProceedings of the National Academy of Sciences, 2017
Significance The sudden and severe increase in the viscosity of certain suspensions above an onset stress is one of the most spectacular phenomena observed in complex fluids. This shear thickening, which has major implications for industry, is a long-standing puzzle in soft-matter physics.
Clavaud, C   +3 more
openaire   +3 more sources

Experimental Study on the Influence of Slurry Concentration and Standing Time on the Friction Characteristics of a Steel Pipe-Soil Interface

open access: yesApplied Sciences, 2022
In pipe jacking, the continued growth of friction resistance around the pipe may cause problems, such as an insufficient jacking force, soil collapse, and even land subsidence, which seriously endangers the structural safety of the pipe and surrounding ...
Cong Zeng   +5 more
doaj   +1 more source

Shear friction performance between high strength concrete (HSC) and ultra high performance concrete (UHPC) for bridge connection applications

open access: yes, 2020
Ultra high performance concrete (UHPC) has been typically used as grout material in the bridge connections or as a repairing material in the bridge deck applications due to outstanding mechanical properties, especially, superior bond strength with ...
Ali A. Semendary   +3 more
semanticscholar   +1 more source

Mesoscopic response mechanism of shear surface roughness and residual strength in gravelly sliding zone soils

open access: yesYantu gongcheng xuebao, 2021
The mechanical properties of the gravelly sliding zone soils are closely related to the meso-structure of the shear surface. The quantitative characterization of shear surface roughness is of great significance to revealing the meso-mechanism of change ...
REN San-shao 1, 2, 3, ZHANG Yong-shuang 1, 3, XU Neng-xiong 2, WU Rui-an 4
doaj   +1 more source

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