The Assessment of Elastic Follow-Up Effects on Cyclic Accumulation of Inelastic Strain Under Displacement-Control Loading

Ferezqi, Hamid Zabihi; Shariati, Mahmoud; Moud, Saeid Hadidi

doi:10.1007/s40997-017-0089-x

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…Loading and unloading under the condition of constant amplitude forms a closed hysteresis loop. If, according to Pyke's loading and unloading criteria [23], the stiffness of each load is only related to the current turning point (Figure 1), this behavior will produce the obvious accumulation of residual plastic deformation, which is similar to the ratchet effect [24][25][26][27][28]. Additionally, the applicability of the two models to the experimental results needs to be verified.…”

Section: Introductionmentioning

confidence: 99%

Research on Shear Behavior of Sand–Structure Interface Based on Monotonic and Cyclic Tests

2021

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In order to study the shear behavior of the interface between sand and structure, a series of shear tests were carried out using an HJ-1 ring shear apparatus (Nanjing, China). First, through the monotonic shear tests, the loose sand and dense sand were sheared at the steel interface with different roughnesses. The results showed that when the interface was relatively smooth, the shear stress–shear displacement curves of loose sand and dense sand both exhibit strain hardening characteristics. When the interface was rough, the dense sand showed strain softening. The initial shear stiffness of the sand–steel interface increased with the increase in normal stress, interface roughness, or sand relative density. Then, considering the influence of initial shear stress, through the cyclic shear test, this work analyzed the shape of the loading and unloading curves and the development law of cumulative normal deformation, and discussed the change of loading and unloading shear stiffness under different stress level amplitudes and the residual deformation generated during the cycle. The research results showed that loose sand and dense sand generally shrunk in volume during the cycle. The initial loading process was similar to the case of static loading. In the later dynamic loading process, the shear shrinkage per cycle was relatively small and continued to develop. Additionally, it was found that the unloading stiffness of the sand–steel interface is always greater than the initial loading stiffness. As the number of cycles increases, the loading stiffness increases, and it may eventually approach the unloading stiffness.

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Section: Introductionmentioning

confidence: 99%

Research on Shear Behavior of Sand–Structure Interface Based on Monotonic and Cyclic Tests

2021

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Experimental and Numerical Study of Turbine Blade Fatigue Based on a Creep-Fatigue Prediction Model

Sun

Huo

2022

Journal of Engineering Materials and Technology

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To scrupulously predict the creep-fatigue life of materials, a creep life prediction model is firstly proposed in this study considering real-time creep damage derived from the Kachanov creep damage model; secondly, combined with the Chaboche fatigue damage model and the nonlinear coupling mechanism of continuous damage mechanics, a creep-fatigue life prediction model of material is ulteriorly presented in this paper; finally, the effectiveness of the creep-fatigue life model is corroborated by experiment data of DZ125, whose prediction results are in the ±2.0 dispersion zone and then the creep-fatigue life of the turbine blade is calculated to compare with the experimental results of the blade specimen to further prove the practicability, whose error is about 3.2%, which can provide a theoretical reference for the damage prediction, durability analysis, and life prediction of the turbine blade.

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Parameters Calibration of the Combined Hardening Rule through Inverse Analysis for Nylock Nut Folding Simulation

Kacar¹

2021

Computer Modeling in Engineering &Amp; Sciences

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The Assessment of Elastic Follow-Up Effects on Cyclic Accumulation of Inelastic Strain Under Displacement-Control Loading

Abstract: This document is the author's post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it.

Cited by 3 publications

References 28 publications

Research on Shear Behavior of Sand–Structure Interface Based on Monotonic and Cyclic Tests

Research on Shear Behavior of Sand–Structure Interface Based on Monotonic and Cyclic Tests

Experimental and Numerical Study of Turbine Blade Fatigue Based on a Creep-Fatigue Prediction Model

Parameters Calibration of the Combined Hardening Rule through Inverse Analysis for Nylock Nut Folding Simulation

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