Results 21 to 30 of about 387,846 (192)

Numerical investigation of the influence of mineral mesostructure on quasi-static compressive behaviors of granite using a breakable grain-based model

open access: yesFrontiers in Ecology and Evolution, 2023
The mesostructure of brittle rocks, such as granite, plays a vital role in determining their mechanical properties and failure mode. Understanding the influence of rock mesostructure on mechanical behavior requires a realistic representation of grain ...
Cheng Pan   +7 more
doaj   +1 more source

Key generation method based on reconfigurable intelligent surface in quasi-static scene

open access: yes网络与信息安全学报, 2021
Aiming at the problems of slow channel changes and low key generation rate in IoT quasi-static scenarios, a key generation method based on reconfigurable intelligent surface (RIS) was proposed.
HAO Yinuo, JIN Liang, HUANG Kaizhi, XIAO Shuaifang
doaj   +3 more sources

Modeling Method Analysis of the Friction Torque for High Speed Spindle Bearing

open access: yesMATEC Web of Conferences, 2018
The friction torque inside the high-speed spindle bearing determines the performance of the friction, wear, heat, temperature rise and life of the bearing.
Li Songsheng   +4 more
doaj   +1 more source

Three-dimensional quasi-static general solution for isotropic thermoelastic medium with applications

open access: yesCase Studies in Thermal Engineering, 2021
An accurate and efficient method for three dimensional quasi-static thermal elastic problems is established. The three-dimensional equations of isotropic quasi-static-thermo-elasticity are simplified by the introduction of two displacement functions.
Qiuhua Li, Pengfei Hou
doaj   +1 more source

Solving quasi‐static equations with the material‐point method

open access: yesInternational Journal for Numerical Methods in Engineering, 2015
SummaryThe material‐point method models continua by following a set of unconnected material points throughout the deformation of a body. This set of points provides a Lagrangian description of the material and geometry. Information from the material points is projected onto a background grid where equations of motion are solved.
Sanchez, J.   +3 more
openaire   +3 more sources

Calibration of quasi-static aberrations in exoplanet direct-imaging instruments with a Zernike phase-mask sensor [PDF]

open access: yes, 2013
Context. Several exoplanet direct imaging instruments will soon be in operation. They use an extreme adaptive optics (XAO) system to correct the atmospheric turbulence and provide a highly-corrected beam to a near-infrared (NIR) coronagraph for starlight
Dohlen, K.   +4 more
core   +5 more sources

An Improved Method for Calculating the Quasi-Static EMP [PDF]

open access: yesIEEE Transactions on Nuclear Science, 1983
A new time-independent numerical method is used to determine the late-time electromagnetic pulse (EMP) resulting from a surface nuclear burst. Completely arbitrary source terms are employed and the non-linear dependence of the air chemistry and air conductivity parameters on the electric field strength is incorporated into the solutions.
James R. Downey, John H. Erkkila
openaire   +1 more source

Measurement of Quasi-Static and Dynamic Displacements of Footbridges Using the Composite Instrument of a Smartstation and an Accelerometer: Case Studies

open access: yesRemote Sensing, 2020
Monitoring the dynamic responses of bridge structures has received considerable attention. It is important to synchronously measure both the quasi-static and dynamic displacements of bridge structures. However, the traditional accelerometer method cannot
Jiayong Yu   +4 more
doaj   +1 more source

STUDY ON MESH STIFFNESS CALCULATION AND LOAD DISTRIBUTION AMONG TEETH OF HELICAL GEAR PAIR AND UNDER BROKEN TOOTH FAULT (MT)

open access: yesJixie qiangdu, 2023
The mesh stiffness calculation and load distribution among teeth of helical gear are the basis of its dynamics analysis and strength calculation. Aiming at the accuracy of approximate replacement method of mesh stiffness of helical gear, the quasi-static
WANG ZhengBing   +4 more
doaj  

Dynamic Stiffness Effect of Mechanical Components on Gear Mesh Misalignment

open access: yesApplied Sciences, 2018
In this work, we propose a method that considers the dynamic elastic stiffness of mechanical components in a quasi-static condition, and we investigate this parameter’s effect on gear mesh misalignment.
Jin-Gyun Kim   +4 more
doaj   +1 more source

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