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Micromechanical Modelling of Time-Dependent Stress-Corrosion Behaviour of High-Strength Steel
Springer Science and Business Media LLC - Tập 2 - Trang 229-244 - 1998
This paper provides micromechanical bases to explain the time-dependent stress corrosion behaviour of high-strength prestressing steel wires. To this end, two eutectoid steels in the form of hot rolled bar and cold drawn wire were subjected to slow strain rate tests in aqueous environments in corrosive conditions corresponding to localized anodic dissolution and hydrogen assisted cracking. While a...... hiện toàn bộ
On the representative volume element of asphalt concrete at low temperature
Springer Science and Business Media LLC - - 2016
The generalized Kelvin chain-based model for an orthotropic viscoelastic materialAbstract We propose a constitutive material model to describe the rheological (viscoelastic) mechanical response of timber. The viscoelastic model is based on the generalized Kelvin chain applied to the orthotropic material and is compared to the simple approach given by standards. The contribution of this study consists of the algorithmization of the viscoelastic m... ... hiện toàn bộ
Springer Science and Business Media LLC -
Stress Relaxation in Superalloys Due to Microstructural Changes
Springer Science and Business Media LLC - Tập 2 - Trang 1-12 - 1998
Relaxation of residual stresses in metallic materials is caused by diffusion of inhomogeneously distributed solved alloying elements and by microstructural mechanisms like rearrangements of dislocation structure and precipitation processes, respectively. Both processes are often linked with each other. Therefore, the description and the modelling of stress relaxation on a microstructural basis is ...... hiện toàn bộ
Rheological parameters and characteristics of bamboo in compression perpendicular to grain under hot-pressing process
Springer Science and Business Media LLC - Tập 25 - Trang 313-325 - 2020
Bamboo with high specific strength is a renewable biomaterial. Studying the rheological properties of bamboo is helpful to improve the performance and quality of bamboo products. In this paper, four-element Burgers model was applied to describe the creep behavior of moso bamboo (Phyllostachs pubescens) in compression perpendicular to grain under hot-pressing process. The relationship between creep...... hiện toàn bộ
Experimental study of the dynamic characteristics of sandstone with preexisting creep damage
Springer Science and Business Media LLC - - 2022
The creep behavior of rock shear seepage under different seepage-water pressures
Springer Science and Business Media LLC - Tập 27 - Trang 351-365 - 2023
The long-term compression–shear–seepage coupling of rock mass is a cause of many engineering geological disasters. This study aimed to explore the creep characteristics of rock mass under different seepage conditions. Based on the shear-creep–seepage test results of shale, the shear-creep–seepage model considering damage was constructed using a series connection of the elastomer (H), a nonlinear v...... hiện toàn bộ
The effect of moisture on the nonlinearly viscoelastic behavior of an epoxy
Springer Science and Business Media LLC - Tập 24 - Trang 435-461 - 2020
The shear and bulk relaxation moduli required to characterize a homogeneous, isotropic, and linearly viscoelastic material were determined using a confined compression experiment and by introducing a new iterative scheme that accounts for the fact that the hoop and radial strains are not step functions. In addition, the coefficients of thermal and hygral expansion of the epoxy being considered wer...... hiện toàn bộ
A triaxial creep model for salt rocks based on variable-order fractional derivative
Springer Science and Business Media LLC - Tập 25 - Trang 101-118 - 2020
This paper intend to describe the entire creep process of a salt rock under triaxial loading, especially the creep characteristics in the accelerated creep stage, by replacing the Newtonian dashpot in the Maxwell model with the variable-order fractional derivative component and extending it from one to three dimensions. The experimental data were obtained from the creep of salt rock under multista...... hiện toàn bộ
Creep Behavior of Dispersion-Hardened Aluminum Materials
Springer Science and Business Media LLC - Tập 3 - Trang 1-13 - 1999
Dispersion-hardened aluminum materials of pure aluminum with extremely fine oxide and carbide dispersions and very fine grain sizes were creep-deformed under compressive loadings between 573 and 773 K. The creep behavior of the investigated materials is influenced by time, temperature, stress level and microstructure. An increasing content of dispersions causes increasing threshold stresses σthand...... hiện toàn bộ
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