Long-term creep of rocks - experimental results with large specimens obtained in 27 years and those with small specimens in 10 years.

Kumagai, Naoiti; Ito, Hidebumi; Sasajima, Sadao

doi:10.2472/jsms.35.484

Cited by 9 publications

(5 citation statements)

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“…It is known that many liquids (including water) behave like elastic solids when subjected to sudden loading, and many solids may flow like liquids, albeit very slowly, even under very low stresses . Traditionally, the description of the fluid‐like behavior of materials was made independently from the theories for the solid‐like behavior.…”

Section: The Visco‐hypoplastic Constitutive Modelmentioning

confidence: 99%

Modeling the viscous behavior of frozen soil with hypoplasticity

2016

Num Anal Meth Geomechanics

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SUMMARYThis paper presents a hypoplastic constitutive model for the viscous behavior of frozen soil. The model is composed of a 'solid' part and a 'fluid' part. The solid part is based on the extended hypoplastic model, and the fluid part is dependent on the second time derivative of strain. The performance of the model is demonstrated by simulating some uniaxial compression tests at different strain rates. Moreover, the model can describe in a unified way the three stages of typical creep tests, that is, primary, secondary, and tertiary stage.

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Section: The Visco‐hypoplastic Constitutive Modelmentioning

confidence: 99%

Modeling the viscous behavior of frozen soil with hypoplasticity

2016

Num Anal Meth Geomechanics

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“…The principal stress values in this setting are • 1 = 39 MPa (the maximum principal stress), • 2 = 34 MPa (the intermediate principal stress), and • 3 = 29 MPa (the minimum principal stress), respectively, and the direction of the intermediate principal stress is set to be subparallel to the vertical direction. The stresses and pore pressures were determined on the basis of the values around 1.5 km depth, and the coefficients of viscoelasticity of the rocks were determined on the basis of several references, 15,25,26) assuming that the rocks are granite. The true values of the parameters estimated in this study are shown in Table 1.…”

Section: Simulated Asr Datamentioning

confidence: 99%

Theoretical Investigation on New Analyzing Procedure of Anelastic Strain Recovery Method for Stress Measurements Based on Bayesian Statistical Modeling

2021

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One significant issue associated with in situ stress measurements is that the uncertainty of the results cannot be determined. In this study, we propose a novel analytical procedure for the anelastic strain recovery (ASR) method, an in situ stress measurement method, enabling us to conduct uncertainty quantification based on Bayesian statistical modeling (BSM). The new procedure consists of the following steps: i) measuring the ASR of a rock core with strain gauges, ii) applying a probability model based on BSM to the measured ASR data and simulating the probability densities of the elements of an in situ stress tensor and other parameters; and iii) regarding the probability densities as the results of in situ stress measurements with uncertainty. This paper presents the results obtained by applying the proposed procedure to simulated ASR data. The results show that the uncertainties of some parameters are reduced by giving the elastic moduli. Notably, the rates of uncertainty decrease vary for each parameter. To reveal the cause of these differences, we introduce the new evaluation tool, Sobol' indices, which comprise a global sensitivity analytic tool, to facilitate a quantitative discussion.

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“…There is even scientific evidence of viscous movement observed over long periods of time in concrete formations such as granite (e.g. Kumagai, Sasajima, & Ito, 1978). Attending to viscosity reveals that everything that exists materially is also in movement, but that these matter-flows have varying speeds, consistencies, and coefficients of resistance and mutability.…”

Section: Viscositymentioning

confidence: 99%

Propositions for an Environmental Arts Pedagogy: A/r/tographic Experimentations with Movement and Materiality

Rousell

Cutcher

Cook

et al. 2020

Springer International Handbooks of Education

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This chapter works through a series of methodological experimentations with movement and materiality in order to explore the potentials of environmental arts pedagogies. We address the question of what environmental arts pedagogies might come to look like in the ever-changing contexts of children's social and environmental worlds. This leads us to engage with choreographic movement and the heterogeneous materialities of place through differential flows of human and non-human agencies as they come to co-compose pedagogical encounters. In doing so, we draw on new materialist accounts of matter as agentic, fluid and dynamic, movement as a choreographic architecting of experience, and a/r/tographic approaches to pedagogical engagement and embodied practice. We acknowledge that the impetus for movement generation may come from a multitude of sources, however in this project we develop a series of experimentations with movement, materiality, environment, art, and pedagogy through a/r/tographic fieldwork. These propositional encounters generated four artistic processes as they emerged through the concepts of 'corridors', 'flight', 'viscosity' and 'construction'. In teasing out the implications of these concepts for an environmental arts pedagogy, we combine imagery and text to both render and diagram the movement of bodies, materials and environments in passage through each of these four conceptual enactments. This leads us to develop a series of propositions for environmental arts pedagogy based on our creative research process. In doing so, we aim to retain the radical openness and contingency of what environmental arts pedagogies might come to look like in response to the rapidly changing material conditions of our times.

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Long-term creep of rocks - experimental results with large specimens obtained in 27 years and those with small specimens in 10 years.

Cited by 9 publications

References 0 publications

Modeling the viscous behavior of frozen soil with hypoplasticity

Modeling the viscous behavior of frozen soil with hypoplasticity

Theoretical Investigation on New Analyzing Procedure of Anelastic Strain Recovery Method for Stress Measurements Based on Bayesian Statistical Modeling

Propositions for an Environmental Arts Pedagogy: A/r/tographic Experimentations with Movement and Materiality

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