Results 1 to 10 of about 104,078 (99)

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

open access: yesActa 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   +2 more sources

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

open access: yesEnvironmental 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 and health monitoring.
Aman Pawar   +5 more
openaire   +2 more sources

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

open access: yesTRANSACTIONS 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
openaire   +3 more sources

Effects of the Change of the Maximum Stress and the Stress Ratio on the Cyclic Creep Behaviors

open access: yesBulletin of JSME, 1981
Cyclic creep behaviors of carbon steel are investigated by the true stress controlled low-cycle fatigue tests, stepwise or linearly increasing or decreasing maximum stress with a changing stress ratio. The constitutive equation proposed previously by the authors is found to be applicable to represent the strain accumulations in both increasing and ...
Fusahito YOSHIDA   +2 more
openaire   +2 more sources

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

open access: yesMATEC 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
openaire   +2 more sources

Cyclic creep behavior and life prediction of DZ125 alloy under different stress ratios

open access: yesJournal of Physics: Conference Series
Abstract In order to study the creep behavior and mechanism of DZ125 alloy under cyclic creep under different stress ratios, cyclic creep experiments are performed under a temperature of 850°C and peak stress of 500 MPa, with stress ratios of 0.1, 0.3, 0.5, 0.7, 0.9, and 1, and the mechanical behavior and microstructure of creep samples ...
Haowen Chen   +4 more
openaire   +1 more source

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

open access: yesInternational 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
openaire   +3 more sources

Effect of Cyclic Stress Level and Overconsolidation Ratio on Permanent Deformation Behaviour of Clayey Subsoil [PDF]

open access: yesCivil Engineering Journal, 2018
This paper presents the results of a series of one-way cyclic triaxial tests carried out to investigate the role of cyclic stress level and overconsolidation ratio (OCR) on the permanent deformation behaviour of saturated clayey subsoil during long-term cyclic loading.
openaire   +1 more source

Influence of Lateral Stress Ratio on N-Value and Cyclic Strength of Sands Containing Fines

open access: yesJournal of the Society of Materials Science, Japan, 2022
Kenji Harada   +2 more
openaire   +2 more sources

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

open access: yesComputers and Geotechnics
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   +2 more sources

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