Results 31 to 40 of about 2,306 (215)

Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations

open access: yesLubricants, 2022
Multi-leaf journal foil bearing (MLJFB) is well known for its applications in the air cycle machines (ACMs) of airplanes. However, its frictional energy dissipation mechanism of overlapped foils has not been theoretically studied and is still not clear ...
Changlin Li   +3 more
doaj   +1 more source

Coupled irradiation-thermal-mechanical analysis of fuel in solid core of heat pipe cooled reactor

open access: yesHe jishu
BackgroundHeat pipe cooled reactor (HPR) has many characteristics, such as reliability, inherent safety, small volume, modularity, and solid core. The nuclear fuel of solid core is seriously affected by high temperature, strong irradiation, and solid ...
YANG Xuan   +9 more
doaj   +1 more source

Design of interdigitated transducers for acoustofluidic applications

open access: yesNanotechnology and Precision Engineering, 2022
Interdigitated transducers (IDTs) were originally designed as delay lines for radars. Half a century later, they have found new life as actuators for microfluidic systems.
Shuren Song   +3 more
doaj   +1 more source

CALCULATION OF THERMAL EXPANSION COEFFICIENT OF MATERIALS IN THERMAL ELASTOHYDRODYNAMIC LUBRICATION OF LINE CONTACT

open access: yesJixie qiangdu, 2022
By combining the thermal elastohydrodynamic lubrication theory, thermoelastic mechanics theory and principle of heat-pressure conversion, a method was presented to solve the material thermal expansion coefficient of solid surface in the thermal ...
LU ZunYou
doaj  

Liquefaction of crushable granular media: A multiscale numerical analysis [PDF]

open access: yesEPJ Web of Conferences
Understanding liquefaction—the loss of shear resistance in granular materials under constantvolume shearing—is crucial for preventing landslides and geotechnical failures.
Cárdenas-Barrantes Manuel   +1 more
doaj   +1 more source

The Morphology of al Droplet in an Ultrasonic Oscillation Field: Kinetic and Equilibrium Thermodynamic Analysis

open access: yesMaterials Research, 2022
Wetting of metal droplet on the solid substrate is a fundamental phenomenon which is applicable to the surface chemistry. When an oscillation field is included in the wetting condition, the wetting process shows significant advancing and receding ...
Wendi Li   +4 more
doaj   +1 more source

Role of grain-level chemo-mechanics in composite cathode degradation of solid-state lithium batteries

open access: yesNature Communications
Solid-state Li-ion batteries, based on Ni-rich oxide cathodes and Li-metal anodes, can theoretically reach a high specific energy of 393 Wh kg−1 and hold promise for electrochemical storage.
Chuanlai Liu, Franz Roters, Dierk Raabe
doaj   +1 more source

A study of normal dynamic parameter models of joint interfaces based on fractal theory

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
The dynamic behaviors of the joint interfaces make a great difference in machine tools, especially in high-end numerical control machines. To provide an assessment of the normal dynamic parameters in contact deformation of elastoplastic solid joint ...
Wenwei LIU   +4 more
doaj   +1 more source

Mechanics of Viscoelastic Thin-Walled Structures [PDF]

open access: yes, 2013
Thin-walled structures made of polymers and reinforced polymer composites are prominent candidates for constructing large lightweight structures. A major challenge in designing polymer-based thin-walled structures is their time and temperature dependent ...
Kwok, Kawai
core   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

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