FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2029835897> ?p ?o ?g. }

• W2029835897 endingPage "283" @default.
• W2029835897 startingPage "267" @default.
• W2029835897 abstract "The Disturbed State Concept (DSC) provides a general approach for constitutive modeling of deforming materials. Here, we briefly explain the DSC and present the results of laboratory tests on two regionally significant North American tills, along with the results of a numerical simulation to predict the behavior of one of the tills in an idealized physical system. Laboratory shear tests showed that plastic strain starts almost from the beginning of loading, and that failure and resulting motion begin at a critical disturbance, when about 85% of the mass has reached the fully adjusted or critical state. Specimens of both tills exhibited distributed strain, deforming into barrel shapes without visible shear planes. DSC parameters obtained from shear and creep tests were validated by comparing model predictions against test data used to find the parameters, as well as against data from independent tests. The DSC parameters from one of the tills were applied in a finite-element simulation to predict gravity-induced motion for a 5000-m long, 100-m thick slab of ice coupled to an underlying 1.5-m thick layer of till set on a 4° incline, with pore-water pressure in the till at 90% of the load. The simulation predicted that in the middle segment of the till layer (i.e., from x=2000 to 3000 m) the induced (computed) shear stress, strain, and disturbance increase gradually with the applied shear stress. Induced shear stress peaks at ∼60 kPa. The critical disturbance, at which failure occurs, is observed after the peak shear stress, at an induced shear stress of ∼23 kPa and shear strain of ∼0.75 in the till. Calculated horizontal displacement over the height of the entire till section at the applied shear stress of 65 kPa is ∼4.5 m. We note that the numerical prediction of critical disturbance, when the displacement shows a sharp change in rate, compares very well with the occurrence of critical disturbance observed in the laboratory triaxial tests, when a sharp change in the rate of strain occurs. This implies that the failure and concomitant initiation of motion occur near the residual state, at large strains. In contrast to the Mohr–Coulomb model, which predicts failure and motion at very small (elastic) strain, the DSC thus predicts failure and initiation of motion after the till has undergone considerable (plastic) strain. These results suggest that subglacial till may be able to sustain stress in the vicinity of 20 kPa even after the motion begins. They also demonstrate the potential of the DSC to model not only local behavior, including potential “sticky spot” mechanisms, but also global behavior for soft-bedded ice." @default.
• W2029835897 created "2016-06-24" @default.
• W2029835897 creator A5006255937 @default.
• W2029835897 creator A5026025165 @default.
• W2029835897 creator A5034187981 @default.
• W2029835897 creator A5055184491 @default.
• W2029835897 creator A5077878521 @default.
• W2029835897 creator A5084837273 @default.
• W2029835897 date "2008-02-01" @default.
• W2029835897 modified "2023-10-16" @default.
• W2029835897 title "Disturbed State constitutive modeling of two Pleistocene tills" @default.
• W2029835897 cites W1569211986 @default.
• W2029835897 cites W1600515466 @default.
• W2029835897 cites W1660495403 @default.
• W2029835897 cites W1963835052 @default.
• W2029835897 cites W1967920261 @default.
• W2029835897 cites W1972380841 @default.
• W2029835897 cites W1973402039 @default.
• W2029835897 cites W1980021094 @default.
• W2029835897 cites W1980291384 @default.
• W2029835897 cites W1983883208 @default.
• W2029835897 cites W1998953231 @default.
• W2029835897 cites W2002137006 @default.
• W2029835897 cites W2004762927 @default.
• W2029835897 cites W2020697768 @default.
• W2029835897 cites W2025865560 @default.
• W2029835897 cites W2029486441 @default.
• W2029835897 cites W2029554950 @default.
• W2029835897 cites W2045326188 @default.
• W2029835897 cites W2048627998 @default.
• W2029835897 cites W2049647879 @default.
• W2029835897 cites W2054754818 @default.
• W2029835897 cites W2066304179 @default.
• W2029835897 cites W2071316355 @default.
• W2029835897 cites W2074984164 @default.
• W2029835897 cites W2075081175 @default.
• W2029835897 cites W2076437246 @default.
• W2029835897 cites W2082585113 @default.
• W2029835897 cites W2087192402 @default.
• W2029835897 cites W2087544033 @default.
• W2029835897 cites W2091921014 @default.
• W2029835897 cites W2098531493 @default.
• W2029835897 cites W2099455652 @default.
• W2029835897 cites W2113112617 @default.
• W2029835897 cites W2131648110 @default.
• W2029835897 cites W2145016426 @default.
• W2029835897 cites W2314630295 @default.
• W2029835897 cites W2328415063 @default.
• W2029835897 cites W2909743337 @default.
• W2029835897 cites W4238913025 @default.
• W2029835897 cites W4240909439 @default.
• W2029835897 cites W4242377938 @default.
• W2029835897 cites W4250090968 @default.
• W2029835897 cites W4253360691 @default.
• W2029835897 doi "https://doi.org/10.1016/j.quascirev.2007.10.003" @default.
• W2029835897 hasPublicationYear "2008" @default.
• W2029835897 type Work @default.
• W2029835897 sameAs 2029835897 @default.
• W2029835897 citedByCount "60" @default.
• W2029835897 countsByYear W20298358972012 @default.
• W2029835897 countsByYear W20298358972013 @default.
• W2029835897 countsByYear W20298358972014 @default.
• W2029835897 countsByYear W20298358972015 @default.
• W2029835897 countsByYear W20298358972016 @default.
• W2029835897 countsByYear W20298358972017 @default.
• W2029835897 countsByYear W20298358972018 @default.
• W2029835897 countsByYear W20298358972019 @default.
• W2029835897 countsByYear W20298358972022 @default.
• W2029835897 crossrefType "journal-article" @default.
• W2029835897 hasAuthorship W2029835897A5006255937 @default.
• W2029835897 hasAuthorship W2029835897A5026025165 @default.
• W2029835897 hasAuthorship W2029835897A5034187981 @default.
• W2029835897 hasAuthorship W2029835897A5055184491 @default.
• W2029835897 hasAuthorship W2029835897A5077878521 @default.
• W2029835897 hasAuthorship W2029835897A5084837273 @default.
• W2029835897 hasConcept C102579867 @default.
• W2029835897 hasConcept C113740112 @default.
• W2029835897 hasConcept C127313418 @default.
• W2029835897 hasConcept C127413603 @default.
• W2029835897 hasConcept C135628077 @default.
• W2029835897 hasConcept C149912024 @default.
• W2029835897 hasConcept C159985019 @default.
• W2029835897 hasConcept C187320778 @default.
• W2029835897 hasConcept C192562407 @default.
• W2029835897 hasConcept C202973686 @default.
• W2029835897 hasConcept C21141959 @default.
• W2029835897 hasConcept C5900021 @default.
• W2029835897 hasConcept C66938386 @default.
• W2029835897 hasConcept C8058405 @default.
• W2029835897 hasConcept C96035792 @default.
• W2029835897 hasConceptScore W2029835897C102579867 @default.
• W2029835897 hasConceptScore W2029835897C113740112 @default.
• W2029835897 hasConceptScore W2029835897C127313418 @default.
• W2029835897 hasConceptScore W2029835897C127413603 @default.
• W2029835897 hasConceptScore W2029835897C135628077 @default.
• W2029835897 hasConceptScore W2029835897C149912024 @default.
• W2029835897 hasConceptScore W2029835897C159985019 @default.
• W2029835897 hasConceptScore W2029835897C187320778 @default.

• next