A constitutive model for inelastic flow and damage evolution in solids under triaxial compression

Chan, Kwai S.; Bodner, S. R.; Fossum, A.F.; Munson, D.E.

doi:10.1016/0167-6636(92)90014-5

Cited by 79 publications

(42 citation statements)

References 13 publications

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“…Van Sambeek et al (1993) referred to the disturbed zone which forms upon mining as the initial DRZ and the subsequent disturbed zone which forms as a result of creep deformation and stress redistribution as the secondary D E . Both the magnitude and extent of damage in the Salado DRZ are time-dependent because the micromechanical deformation mechanism governing the dilatant inelastic deformation of the salt is a timedependent micro-fracturing mechanism (Chan et al, 1992). This mechanism is operable only under a limited range of stress states, specifically high stress difference relative to low mean stress.…”

Section: Description Of the Drzmentioning

confidence: 99%

WIPP shaft seal system parameters recommended to support compliance calculations

Hurtado¹,

Knowles

Kelley³

et al. 1997

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Section: Description Of the Drzmentioning

confidence: 99%

WIPP shaft seal system parameters recommended to support compliance calculations

Hurtado¹,

Knowles

Kelley³

et al. 1997

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“…While the MD model is relatively advanced in comparison to some creep models, it lacks other features that are important for more-advanced modeling of salt response. A descendant of the MD model that incorporates a few more advanced features is the Multi-mechanism Deformation Creep Fracture (MDCF) Model (Chan et al, 1992). At a minimum, this model needs to be incorporated into the code.…”

Section: Other Unique Featuresmentioning

confidence: 99%

“…See references for more detailed descriptions of each model. The three constitutive models reviewed are the multimechanism deformation coupled fracture model (Chan et al, 1992;Chan et al, 1994;Munson, 1993), representing the state of the art creep model developed through the mid-90s and used at SNL, the composite dilatancy model (Hampsel, 2007), and a rock salt model that describes transient, stationary, and accelerated creep and dilatancy (Salzer et al, 2006;Gunter and Salzer, 2007). The latter two models represent state of the art constitutive models developed in the last decade.…”

Section: B30 Constitutive Modelsmentioning

confidence: 99%

Nuclear Energy Advanced Modeling and Simulation (NEAMS) waste Integrated Performance and Safety Codes (IPSC) : gap analysis for high fidelity and performance assessment code development.

Lee¹,

Siegel²,

Argüello³

et al. 2011

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This report describes a gap analysis performed in the process of developing the Waste Integrated Performance and Safety Codes (IPSC) in support of the U.S. Department of Energy (DOE) Office of Nuclear Energy Advanced Modeling and Simulation (NEAMS) Campaign. The goal of the Waste IPSC is to develop an integrated suite of computational modeling and simulation capabilities to quantitatively assess the long-term performance of waste forms in the engineered and geologic environments of a radioactive waste storage or disposal system. The Waste IPSC will provide this simulation capability (1) for a range of disposal concepts, waste form types, engineered repository designs, and geologic settings, (2) for a range of time scales and distances, (3) with appropriate consideration of the inherent uncertainties, and (4) in accordance with rigorous verification, validation, and software quality requirements.The gap analyses documented in this report were are performed during an initial gap analysis to identify candidate codes and tools to support the development and integration of the Waste IPSC, and during follow-on activities that delved into more detailed assessments of the various codes that were acquired, studied, and tested. The current Waste IPSC strategy is to acquire and integrate the necessary Waste IPSC capabilities wherever feasible, and develop only those capabilities that cannot be acquired or suitably integrated, verified, or validated.The gap analysis indicates that significant capabilities may already exist in the existing THC codes although there is no single code able to fully account for all physical and chemical iv processes involved in a waste disposal system. Large gaps exist in modeling chemical processes and their couplings with other processes. The coupling of chemical processes with flow transport and mechanical deformation remains challenging. The data for extreme environments (e.g., for elevated temperature and high ionic strength media) that are needed for repository modeling are severely lacking. In addition, most of existing reactive transport codes were developed for nonradioactive contaminants, and they need to be adapted to account for radionuclide decay and ingrowth. The accessibility to the source codes is generally limited. Because the problems of interest for the Waste IPSC are likely to result in relatively large computational models, a compact memory-usage footprint and a fast/robust solution procedure will be needed. A robust massively parallel processing (MPP) capability will also be required to provide reasonable turnaround times on the analyses that will be performed with the code.A performance assessment (PA) calculation for a waste disposal system generally requires a large number (hundreds to thousands) of model simulations to quantify the effect of model parameter uncertainties on the predicted repository performance. A set of codes for a PA calculation must be sufficiently robust and fast in terms of code execution. A PA system as a whole must be able to provide multi...

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“…1 is the difference in principal stresses given by 101 -021, or the Tresca maximum shear stress criterion. The second term in the right-hand-side of Under normal conditions, the strong influence of the lithostatic pressure, expressed through the complicated second term on the right-hand-side of Eq.…”

Section: Conceptual Model Of Fracture and Spall Formationmentioning

confidence: 99%

Interior cavern conditions and salt fall potential

Munson¹,

Molecke²,

Myers³

1998

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DISCLAIMERThis report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employes, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its usc would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, m mmendirtion, or favoring by the United States Government or any agency thereof. ABSTRACTA relatively large number of salt caverns are used for fluid hydrocarbon storage, including an extensive set of facilities in the Gulf Coast salt domes for the Strategic Petroleum Reserve (SPR) Program. Attention is focused on the SPR caverns because of available histories that detail events involving loss and damage of the hanging string casing. The total number of events is limited, making the database statistically sparse. The occurrence of the events is not evenly distributed, with some facilities, and some caverns, more susceptible than others. While not all of these events could be attributed to impacts from salt falls, many did show the evidence of such impacts. As a result, a study has been completed to analyze the potential for salt falls in the SPR storage caverns. In this process, it was also possible to deduce some of the cavern interior conditions. Storage caverns are very large systems in which many factors could possibly play a part in casing damage. In this study, all of the potentially important factors such as salt dome geology, operational details, and material characteristics were considered, with all being logically evaluated and most being determined as secondary in nature. As a result of the study, it appears that a principal fixtor in determining a propensity for casing damage from salt MIS is the creep and fracture characteristics of salt in individual caverns. In addition the hxture depends strongly upon the concentration of impurity particles in the salt. Although direct observation of cavern conditions is not possible, the average impurity concentration and the accumulation of salt fall material can be determined. When this is done, there is a reasonable correlation between the propensity for a cavern to show casing damage events and accumulation of salt fall material. Interestingly, the accumulation volumes of salt fXl material can be extremely large, indicating that only a few of the salt falls are large enough to cause impact damage.

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A constitutive model for inelastic flow and damage evolution in solids under triaxial compression

Cited by 79 publications

References 13 publications

WIPP shaft seal system parameters recommended to support compliance calculations

WIPP shaft seal system parameters recommended to support compliance calculations

Nuclear Energy Advanced Modeling and Simulation (NEAMS) waste Integrated Performance and Safety Codes (IPSC) : gap analysis for high fidelity and performance assessment code development.

Interior cavern conditions and salt fall potential

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