Results 61 to 70 of about 19,020 (254)

Experimental and Numerical Analysis of Ratcheting Behavior of Super Duplex SAF2507 Stainless Steel Under Uniaxial Loading

open access: yesApplied Sciences
Super duplex SAF2507 stainless steel is widely used in petrochemical piping systems during the transport of substances. The pipelines are subjected to cyclic loads due to road vibration and internal pressure, which causes the ratcheting behavior. In this
Hongru Liu   +3 more
doaj   +1 more source

Biomechanical investigation of a novel ratcheting arthrodesis nail

open access: yesJournal of Orthopaedic Surgery and Research, 2010
Background Knee or tibiotalocalcaneal arthrodesis is a salvage procedure, often with unacceptable rates of nonunion. Basic science of fracture healing suggests that compression across a fusion site may decrease nonunion.
Billiar Kristen L   +4 more
doaj   +1 more source

COMPETITION AND RATCHET HYPOTHESIS: HOW SAFE ARE MANUFACTURING COMPANIES IN SUB-SAHARAN AFRICA?

open access: yesMalaysian Management Journal, 2021
This study applied the conventional ratcheting notion that managers (agents) chose to restrict their performance because they anticipated that firms (principals) would respond to higher performance levels by raising targets or by cutting pay in a piece ...
Olusola Enitan Olowofela   +2 more
doaj   +1 more source

Ratcheting of Granular Materials [PDF]

open access: yesPhysical Review Letters, 2004
We investigate the quasi-static mechanical response of soils under cyclic loading using a discrete model of randomly generated convex polygons. This response exhibits a sequence of regimes, each one characterized by a linear accumulation of plastic deformation with the number of cycles.
Alonso-Marroquin, F, Herrmann, HJ
openaire   +4 more sources

Evolution of Physical Intelligence Across Scales

open access: yesAdvanced Intelligent Discovery, EarlyView.
By following the evolution of physical intelligence across scales, this article shows how intelligence arises from materials, structures, physical interactions, and collectives. It establishes physical intelligence as the evolutionary foundation upon which embodied intelligence is built.
Ke Liu   +7 more
wiley   +1 more source

CRYOGENIC RATCHETING OF PRESTRAINED AUSTENITIC STAINLESS STEEL S30408

open access: yesJixie qiangdu, 2020
Taking advantage of the EUM-25 K20 tension-torsion fatigue testing machine by CARE,the cryogenic uniaxial ratcheting tests were carried out for the S30408 specimens with and without weld,and with 0%,8%,and 12% pre-strains at110 K.
LI LeiLei   +3 more
doaj  

Two Contributions to Rolling Contact Fatigue Testing Considering Different Diameters of Rail and Wheel Discs

open access: yesLubricants, 2023
Scaled rolling contact fatigue tests, used to practically simulate the wear of the wheel and rail material under laboratory conditions, are typically classified into two categories. Tests in the first category use twin-disc stands, while the second group
Jiří Šmach   +5 more
doaj   +1 more source

Chaperone-assisted translocation of flexible polymers in three dimensions

open access: yes, 2016
Polymer translocation through a nanometer-scale pore assisted by chaperones binding to the polymer is a process encountered in vivo for proteins. Studying the relevant models by computer simulations is computationally demanding.
Linna, R. P., Suhonen, P. M.
core   +1 more source

Study on ratcheting of beams under the combination of gravity and seismic load

open access: yesMechanical Engineering Journal, 2019
Ratcheting is one common phenomenon under excessive earthquakes. This study focuses on clarifying the ratcheting mechanism of beams subjected to the combination of gravity and seismic loadings. The sinusoidal excitations or their combinations represented
Jinqi LYU   +4 more
doaj   +1 more source

Formulation of plastic strain distribution derived from long-distance travel of temperature distribution based on residual stress required for elastic shakedown behavior

open access: yesMechanical Engineering Journal, 2021
In an experimental study that simulated a fast breeder reactor (FBR) vessel near the coolant surface, it was reported that the long distance travel of temperature distribution causes a new type of thermal ratcheting, even in the absence of primary stress.
Satoshi OKAJIMA
doaj   +1 more source

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