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Modelling of Steel Creep at High Temperatures Using an Implicit Creep Model
Key Engineering Materials, 2013The paper presents the numerical procedure for modelling the behaviour of steel structures at high temperatures using a newly developed implicit creep model. This implicit creep model uses the calculated creep strains to modify the material stress-strain curves, thus implicitly taking into account the effect of the developed creep strain.
Harapin, Alen, Boko, Ivica, Torić, Neno
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A model for the creep of concrete
Cement and Concrete Research, 1975Abstract Porosity and density changes were measured for a series of mortar specimens and a series of cement paste specimens subjected to various compressive stress histories during desorption and sorption cycles. It was found that hydration is inhibited by compressive stress.
Brian B. Hope, Noel H. Brown
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physica status solidi (b), 1968
AbstractA model of creep in solids is developed in which flow units, identified with dislocation segments in crystals, overcome energy barriers u1 ≦ u ≦ u2 with the aid of thermal activation. Each successful transition of a unit increases or decreases the barrier for the subsequent jump by a stress‐dependent increment.
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AbstractA model of creep in solids is developed in which flow units, identified with dislocation segments in crystals, overcome energy barriers u1 ≦ u ≦ u2 with the aid of thermal activation. Each successful transition of a unit increases or decreases the barrier for the subsequent jump by a stress‐dependent increment.
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Journal of the Mechanics and Physics of Solids, 1963
Abstract The introduction of recovery into the logarithmic (exhaustion) creep model leads to a form of creep curve which accords with the experimental observations. In particular, an approximately cubic transient creep, followed by a steady state creep, are both exhibited.
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Abstract The introduction of recovery into the logarithmic (exhaustion) creep model leads to a form of creep curve which accords with the experimental observations. In particular, an approximately cubic transient creep, followed by a steady state creep, are both exhibited.
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Il Nuovo Cimento D, 1991
Experimental results of dynamic modulus and internal friction, measured directly during creep deformation, and back-stress data from dip test measurements are considered for an explanation of the power law of creep. The explanation is essentially based on the assumption that stationary creep depends on dislocations in the subgrain interior with zones ...
P. GONDI, SILI, Andrea Mariano
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Experimental results of dynamic modulus and internal friction, measured directly during creep deformation, and back-stress data from dip test measurements are considered for an explanation of the power law of creep. The explanation is essentially based on the assumption that stationary creep depends on dislocations in the subgrain interior with zones ...
P. GONDI, SILI, Andrea Mariano
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Compression Creep Characteristics and Creep Model Establishment of Gangue
Geotechnical and Geological Engineering, 2016How to describe the compression creep behavior of gangue is very essential for the design of gangue backfilling mining. In this paper, compression tests of two kinds of gangue are studied, finding that logarithmic function is suitable for describing its equal-time stress–strain relationship. Stress–strain–time relationship is proposed through modifying
Wei-yao Guo +5 more
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2009
Abstract This article, to develop an understanding of the underlying mechanisms governing deformation at elevated temperatures, discusses the phenomenological effects resulting from temperature-induced thermodynamic and kinetic changes. It describes the deformation behavior of engineering materials using expressions known as constitutive
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Abstract This article, to develop an understanding of the underlying mechanisms governing deformation at elevated temperatures, discusses the phenomenological effects resulting from temperature-induced thermodynamic and kinetic changes. It describes the deformation behavior of engineering materials using expressions known as constitutive
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Creep and creep modelling of a multimodal nickel-base superalloy
Acta Materialia, 2011The creep properties of different γ'-Ni3Al distributions in the Ni115 nickel superalloy produced by heat treatment have been examined. At the stresses and temperatures employed it is shown that particle bypass cannot occur by cutting or bowing and so presumably occurs by a climb-glide motion.
Coakley, James +2 more
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Constitutive Modeling and Analysis of Creeping Slopes
Journal of Geotechnical Engineering, 1995Reference LMS-ARTICLE-2006-022View record in Web of Science Record created on 2006-11-10, modified on 2016-08 ...
Desai, C.S., Samtani, N., Vulliet, L.
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2009
Abstract The overarching goal of life-prediction research is to develop models for the various types of time dependencies in the crack-tip damage accumulation that occur in materials subjected to elevated temperatures. This article focuses on describing the models based on creep, oxidation kinetics, evolution of crack-tip stress fields ...
Jeffrey L. Evans, Ashok Saxena
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Abstract The overarching goal of life-prediction research is to develop models for the various types of time dependencies in the crack-tip damage accumulation that occur in materials subjected to elevated temperatures. This article focuses on describing the models based on creep, oxidation kinetics, evolution of crack-tip stress fields ...
Jeffrey L. Evans, Ashok Saxena
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