Results 21 to 30 of about 509,322 (292)

Prediction of Fatigue Crack Growth in Metallic Specimens under Constant Amplitude Loading Using Virtual Crack Closure and Forman Model

open access: yesMetals, 2020
This paper considers the applicability of virtual crack closure technique (VCCT) for calculation of stress intensity factor range for crack propagation in standard metal specimen geometries with sharp through thickness cracks.
Sanjin Krscanski, Josip Brnic
doaj   +1 more source

Estimating the intrinsic dissipation using the second harmonic of the temperature signal in tension‐compression fatigue: Part I. Theory

open access: yesFatigue & Fracture of Engineering Materials & Structures, 2021
An analytical framework was developed to correlate the intrinsic dissipation to the second harmonic of the temperature signal evaluated by means of the Fourier transform.
G. Meneghetti, M. Ricotta
semanticscholar   +1 more source

A physical-space version of the stretched-vortex subgrid-stress model for large-eddy simulation [PDF]

open access: yes, 2000
A physical-space version of the stretched-vortex subgrid-stress model is presented and applied to large-eddy simulations of incompressible flows. This version estimates the subgrid-kinetic energy required for evaluation of the subgrid-stress tensor using
Chan, Daniel C.   +2 more
core   +2 more sources

Finite-element modelling of frictional behaviour between oesophagus and endoscope

open access: yesBiosurface and Biotribology, 2020
The endoscopy is the most direct and effective means for digestive tract diseases. Medical workers can conduct a series of manipulations with the help of endoscope, including checking, removing, stripping the diseased tissue or placing the stent.
Chengxiong Lin   +4 more
doaj   +1 more source

Where is the Inner Edge of an Accretion Disk Around a Black Hole? [PDF]

open access: yes, 2002
What is meant by the "inner edge" of an accretion disk around a black hole depends on the property that defines the edge. We discuss four such definitions using data from recent high-resolution numerical simulations.
Ebisawa K.   +2 more
core   +2 more sources

Protective Effects of Selenium on Wheat Seedlings under Salt Stress

open access: yesAgronomy, 2019
Wheat is a staple food worldwide, but its productivity is reduced by salt stress. In this study, the mitigative effects of 22 μM selenium (Se) on seedlings of the wheat (Triticum aestivum L.) cultivar Taichung SEL.
Chiu-Yueh Lan   +3 more
doaj   +1 more source

Mechanical Properties and Damage Evolution of Heated Granite Subjected to Liquid Nitrogen Cooling

open access: yesApplied Sciences, 2022
To investigate the effect of liquid nitrogen on the granite failure process, the deterioration effect of liquid nitrogen on heated granite was investigated from experimental and theoretical perspectives.
Chunbo Zhou   +4 more
doaj   +1 more source

Numerical evaluation of three non-coaxial kinematic models using the distinct element method for elliptical granular materials [PDF]

open access: yes, 2016
This is the accepted version of the following article: [Jiang, M. J., Liu, J. D., and Arroyo, M. (2016) Numerical evaluation of three non-coaxial kinematic models using the distinct element method for elliptical granular materials. Int. J. Numer.
Arroyo Alvarez de Toledo, Marcos   +2 more
core   +2 more sources

Mechanical Properties and Energy Dissipation of Sandstone under Cyclic Loading-Unloading

open access: yesShock and Vibration, 2021
For the bearing rock in geotechnical engineering, it is frequently affected by external loads. This paper adopted different upper limits of stress to carry out cyclic loading-unloading on the sandstone specimens to make them in different damage degrees ...
Shoudong Xie   +5 more
semanticscholar   +1 more source

Experimental Study of the Tensile Strength and Energy Characteristics of Sandstone with Different Moisture Contents

open access: yesRenmin Zhujiang, 2021
In order to study the influence of the tensile strength and energy characteristics of sandstone with different moisture contents,this paper tests the tensile strength of sandstone with different moisture contents by the rock test press.The results show ...
LIAO Anjie, LAI Lin
doaj  

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