Results 251 to 260 of about 191,694 (304)
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Factors influencing creep model equation selection
International Journal of Pressure Vessels and Piping, 2008During the course of the EU-funded Advanced-Creep Thematic Network, ECCC-WG1 reviewed the applicability and effectiveness of a range of model equations to represent the accumulation of creep strain in various engineering alloys. In addition to considering the experience of network members, the ability of several models to describe the deformation ...
Holdsworth, S. R. +11 more
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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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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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Mechanism Based Creep Model Incorporating Damage
Journal of Engineering Materials and Technology, 2010The increasing demand of reliable creep design for very long lives (exceeding 100.000 h), as those for high stress-low temperatures and high temperature-low stress regimes, requires a model formulation capable to account for the nonlinearity in the stress dependence of the logarithm of the creep rate as a result of the combination of both diffusional ...
BONORA N, ESPOSITO, Luca
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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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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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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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Power Law Model to Predict Creep Movement and Creep Failure
Journal of Geotechnical and Geoenvironmental Engineering, 2019AbstractSoils deform as a function of time because of the consolidation and the creep processes.
Gang Bi +3 more
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Creep Life Prediction of HR3C Steel Using Creep Damage Models
Volume 3B: Design and Analysis, 2017The world’s energy market demands more efficient power plants, hence, the operating conditions become severe. For thermal plants, Ultra Super Critical (USC) conditions were employed with an operating temperature above 600°C. In such conditions, the main failure mechanism is creep rupture behavior.
Hoomin Lee +3 more
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Mechanism Based Unified Creep Model Incorporating Damage
Volume 6: Materials and Fabrication, Parts A and B, 2008Although it is often said that diffusional flow creep is out of the practical engineering applications, the need for a unified model capable to account for the resulting action of both diffusional and dislocation type creep is justified by the increasing demands of reliable creep design for very long lives (exceeding 100.000h), high stress-low ...
Bonora N, ESPOSITO, Luca
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