Results 11 to 20 of about 8,865,343 (255)

Indices to Determine the Reliability of Rocks under Fatigue Load Based on Strain Energy Method

open access: yesApplied Sciences, 2019
Rock is a complicated material which includes randomly distributed grains and cracks. The reliability of rocks under fatigue load is very important during the construction and operation of rock engineering.
Huanran Fu   +3 more
doaj   +1 more source

Mechanical properties of pre-strained austenitic stainless steel from the view of energy density

open access: yesResults in Physics, 2018
The effect of pre-strain on mechanical properties was investigated for 316L austenitic stainless steel over pre-strain value ranging from 0% to 35%. The effect of pre-strain on energy density of tensile curve was focused, and pre-strain enhances elastic ...
Jian Peng   +3 more
doaj   +1 more source

A Modified Bursting Energy Index for Evaluating Coal Burst Proneness and Its Application in Ordos Coalfield, China

open access: yesEnergies, 2020
Coal burst is a type of dynamic geological hazard in coal mine. In this study, a modified bursting energy index, which is defined as the ratio of elastic strain energy at the peak strength to the released strain energy density at the post-peak stage, was
Xuewei Liu   +3 more
doaj   +1 more source

Effect of Joint Density on Rockburst Proneness of the Elastic-Brittle-Plastic Rock Mass

open access: yesShock and Vibration, 2021
The prediction of rockburst proneness is the basis of preventing and controlling rockburst disasters in rock engineering. Based on energy theory and damage mechanics, the quantitative functional relationship between joint density and energy density was ...
Jiliang Pan, Fenhua Ren, Meifeng Cai
doaj   +1 more source

Application of the strain energy density criterion to ductile fracture [PDF]

open access: yes, 1985
The strain energy density criterion due to Sih is used to predict fracture loads of two thin plates subjected to large elastic-plastic deformation. The prediction is achieved with a finite element analysis which is based on Hill's variational principle ...
Chow CL, 徐纪林
core   +1 more source

Mechanical responses and energy characteristics of the Jinping marble under the dynamic impact

open access: yesShuiwen dizhi gongcheng dizhi, 2022
To study the dynamic responses and energy characteristics of the marble from the Jinping hydropower station, the dynamic compression tests on the rock samples are carried out using the split-Hopkinson pressure bar, and the fractal dimension of the ...
Ao LI   +6 more
doaj   +1 more source

Characteristics of energy evolution during total stress-strain in rocks under uniaxial compression

open access: yesMeikuang Anquan, 2023
To study the energy evolution of rocks under uniaxial compression, uniaxial compression and uniaxial step loading and unloading tests were performed on granite, sandstone, and coal, and the stress-strain curves under different conditions were obtained ...
LI Dongwen   +3 more
doaj   +1 more source

IMPACT TESTING OF ORDNANCE GELATINE UNDER MODERATE STRAIN RATE CONDITIONS

open access: yesActa Polytechnica CTU Proceedings, 2018
An experimental study on energy absorption capabilities and strain rate sensitivity of ordnance gelatine was performed. Strain energy density under quasi static compression and moderate strain rate impact tests was compared.
Tomáš Doktor   +4 more
doaj   +1 more source

Research on Fretting Fatigue of Tungsten Carbide Coating Based on Strain Energy Density Methods [PDF]

open access: yesArchives of Metallurgy and Materials, 2023
The numerical solutions of stress and strain components on the critical plane of tungsten carbide coating were solved based on the critical plane method in three-dimensional coordinate system, and accordingly three strain energy density parameters (Smith-
Xin Zeng   +4 more
doaj   +1 more source

Complementary foods in Jamaica: viscosity, energy density and feeding practices. [PDF]

open access: yes, 2002
OBJECTIVES: To develop and validate a field method for measuring the viscosity of small quantities of weaning porridges, to measure the viscosity and energy density of porridges fed in urban and rural environments, and to relate the findings to ...
Walker, Susan P   +3 more
core   +1 more source

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