A Caputo variable-order fractional damage creep model for sandstone considering effect of relaxation time
Sign Up to like & getrecommendations! Published in 2021 at "Acta Geotechnica"
DOI: 10.1007/s11440-021-01230-9
Abstract: Establishing a fractional creep model with few parameters and explicit physical interpretation is of significant meaning for predicting rheological deformation of rock. In this study, based on the Caputo variable-order fractional derivative, a Caputo variable-order… read more here.
Keywords: caputo variable; order; creep model; damage ... See more keywords
Secondary development and application of the NP-T creep model based on FLAC3D
Sign Up to like & getrecommendations! Published in 2017 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-017-3301-9
Abstract: The Poynting-Thomson creep model is one of the classical combined creep models; however, it fails to demonstrate the plastic creep and the accelerated creep stage, which limit the popularization and the use of the model.… read more here.
Keywords: thomson creep; development application; creep model; poynting thomson ... See more keywords
A novel damage-based creep model considering the complete creep process and multiple stress levels
Sign Up to like & getrecommendations! Published in 2020 at "Computers and Geotechnics"
DOI: 10.1016/j.compgeo.2020.103599
Abstract: Abstract To develop a unified creep model, the complete creep process of rock is divided into the deceleration region and acceleration region based on the typical deformation characteristics and mechanism of the rock creep behavior.… read more here.
Keywords: creep model; model; creep; complete creep ... See more keywords
A 3D grain-based creep model (3D-GBCM) for simulating long-term mechanical characteristic of rock salt
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2019.106672
Abstract: Abstract A 3D micro-creep model based on the grain-based structure and the framework of the Particle Flow Code (PFC) approach is proposed. Simultaneously, a Voronoi polyhedral technique is employed to approximatively construct the grain structure… read more here.
Keywords: grain based; creep model; model; rock salt ... See more keywords
A combined loading-creep model of ETFE foils for flat-patterning structures
Sign Up to like & getrecommendations! Published in 2020 at "Thin-walled Structures"
DOI: 10.1016/j.tws.2020.106976
Abstract: Abstract Creep properties of ethylene tetrafluoroethylene (ETFE) foils are indispensable for assessing structural behavior of flat-patterning ETFE cushions that use creep strains to achieve desired forms. The understanding of corresponding structural form and force requires… read more here.
Keywords: creep model; model; flat patterning; etfe foils ... See more keywords
A wellbore creep model based on the fractional viscoelastic constitutive equation
Sign Up to like & getrecommendations! Published in 2017 at "Petroleum Exploration and Development"
DOI: 10.1016/s1876-3804(17)30117-9
Abstract: Abstract To simulate the evolution of wellbore creep accurately, predict and prevent severe accidents such as borehole wall sloughing, casing collapse and sticking of the drill, based on previous studies, the springpot element was introduced… read more here.
Keywords: model based; creep model; wellbore creep; model ... See more keywords
Nonlinear Creep Model for Rocks Considering Damage Evolution Based on the Modified Nishihara Model
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Geomechanics"
DOI: 10.1061/(asce)gm.1943-5622.0002071
Abstract: Abstract In general, the microdefects in rocks obey Weibull distribution. Based on the laws of statistics of microdefects in rocks, the relationship between the damage and the strain is established... read more here.
Keywords: nonlinear creep; creep model; damage; model rocks ... See more keywords
A new theoretical creep model of an epoxy-graphene composite based on experimental investigation: effect of graphene content
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DOI: 10.1177/0021998319895806
Abstract: In this paper, the creep behavior of an epoxy-based adhesive reinforced with different weight fractions of graphene up to 0.5 wt% was studied. Creep tests were performed in three stress levels, using the ultimate strength of… read more here.
Keywords: theoretical creep; epoxy graphene; creep model; graphene ... See more keywords
Design of an Anthracite Creep Model Based on Fractional Order Theory: Experiments and Simulations
Sign Up to like & getrecommendations! Published in 2023 at "Applied Sciences"
DOI: 10.3390/app13116522
Abstract: Fractional order theory was used to characterize the accelerated creep phase of a nonlinear creep model. To accurately describe each stage of the anthracite creep model, the “gyroscope” unit was introduced by combining the Heaviside… read more here.
Keywords: fractional order; anthracite creep; creep model; model ... See more keywords