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Influence of Hold Time and Stress Ratio on Cyclic Creep Properties Under Controlled Tension Loading Cycles of Grade 91 Steel

open access: diamondNuclear Engineering and Technology, 2017
Influences of hold time and stress ratio on cyclic creep properties of Grade 91 steel were systemically investigated using a wide range of cyclic creep tests, which were performed with hold times (HTs) of 1 minute, 3 minutes, 5 minutes, 10 minutes, 20 ...
Woo-Gon Kim   +4 more
doaj   +4 more sources

Nonlinear shear mass participation factor (rd) for cyclic shear stress ratio evaluation

open access: greenSoil Dynamics and Earthquake Engineering, 2004
Most methods for assessment of in situ seismic soil liquefaction potential require evaluation of the earthquake-induced cyclic shear stress ratio (CSR). Estimates of the in situ CSR can be developed directly, using dynamic response analyses, but it is common in ‘simplified’ analysis methods to develop estimates of the in situ CSR using empirical ...
K.Onder Cetin, Raymond B. Seed
exaly   +5 more sources

Artificial intelligence algorithms for prediction of cyclic stress ratio of soil for environment conservation

open access: goldEnvironmental Challenges, 2023
Civil Engineering structures are constantly subjected to environmental forces and changes around the surroundings hence a strong need for assessment of the interaction and predictive measures that lead to pro-active actions towards the structural safety ...
Aman Pawar   +5 more
doaj   +3 more sources

Cyclic compression of sands at constant stress ratio—experimental investigations and constitutive modelling [PDF]

open access: hybridActa Geotechnica, 2022
AbstractSeveral constitutive models for sands are based on an additive split of the effective stress rate into two terms. One term accounts for the deviatoric stress ratio $$\varvec{r}$$ r , the other for the mean effective stress $${p}$$ p ...
Christian Carow, Frank Rackwitz
openaire   +3 more sources

Influences of Stress Ratio on Cyclic Stress Corrosion Crack Growth Characteristics of a High Strength Steel

open access: bronzeTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1981
Influences of stress ratios and stress cycle frequencies on cyclic stress corrosion crack growth characteristics of a high-strength steel have been investigated. The influences of stress ratios on crack growth rate under cyclic SCC are clearly distinguished between above and below KISCC. In the range of Kmax, KFSCC≤ Kmax < KISCC, a decrease of R causes
Kichiro ENDO   +2 more
  +6 more sources

Cyclic stress-controlled tests on offshore clay

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2017
One of the main concerns in cyclic behavior of soft clay is gradual degradation with the progression of loading cycle. A series of cyclic constant-volume direct simple shear (CDSS) loading tests was performed on Malaysia offshore clay to study its ...
S.Y. Thian, C.Y. Lee
doaj   +3 more sources

Including the normal to shear stresses ratio in fatigue life estimation for cyclic loadings [PDF]

open access: diamondMATEC Web of Conferences, 2019
The paper presents the estimation of the fatigue life under multiaxial cyclic loading of two construction materials. The main aim of this paper is to present a new method which allows evaluation of fatigue life during the design and construction phase of machine elements. In paper three well known multiaxial fatigue criteria based on the critical plane
Marta Kurek
openaire   +3 more sources

A shear history model for capturing the liquefaction resistance of sands at various cyclic stress ratios

open access: hybridComputers and Geotechnics, 2023
Various constitutive formulations have been developed over the years to reproduce the cyclic resistance of sands. A common challenge for existing models is the accurate simulation of the cyclic strength of sands for a wide range of initial conditions and different cyclic stress levels when adopting a single calibration. Many liquefaction models tend to
J.K. Möller   +3 more
openaire   +3 more sources

Equivalent stress concept to account for the effect of local cyclic stress ratio on transverse cracking in tension–tension fatigue

open access: greenInternational Journal of Fatigue
Presented test results on transverse cracking in cross-ply laminates upon tension–tension cyclic loading show that the increase of crack density depends not only on the maximum transverse stress in the cycle but also on the local cyclic stress ratio RTloc in the analyzed layer.
Vivek Richards Pakkam Gabriel   +3 more
  +6 more sources

Undrained heating effects on monotonic shear behaviors and critical cyclic stress ratios of deep-sea sediment

open access: closedYantu gongcheng xuebao, 2023
A series of temperature-controlled triaxial tests are conducted on the deep-sea sediment from the Western trough of the South China Sea. The undrained heating effects on undrained shear strength, pore pressure and critical cyclic stress ratio are ...
SUN Anyuan 1, YANG Gang 1, REN Yubin 1, KONG Gangqiang 2, YANG Qing 1
doaj   +2 more sources

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