Results 81 to 90 of about 8,196 (223)
Advanced Newton Methods for Geodynamical Models of Stokes Flow With Viscoplastic Rheologies
Geochemistry, Geophysics, Geosystems, 2020 Strain localization and resulting plasticity and failure play an important role in the evolution of the lithosphere. These phenomena are commonly modeled by Stokes flows with viscoplastic rheologies.
Johann Rudi +2 more
doaj +1 more source
, 2007 This article deals with a viscoplastic material model of overstress type. The model is based on a multiplicative decomposition of the deformation gradient into elastic and inelastic part.
A.V. Shutov +38 more
core +2 more sources
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.Abstract Melt migration in partially molten rocks is commonly described by porous flow models controlled by the hydro‐mechanical compaction length, which effectively explains melt extraction at mid‐ocean ridges. However, this framework cannot account for the paradoxical accumulation of small melt fractions into rhythmic leucosome–melanosome bands in ...
Qingpei Sun +3 more
wiley +1 more source
Steady-state and transient Zener parameters in viscoplasticity: Drag strength versus yield strength [PDF]
A hypothesis is put forth which enables the viscoplastician to formulate a theory of viscoplasticity that reduces, in closed form, to the classical theory of creep. This hypothesis is applied to a variety of drag and yield strength models. Because of two
Freed, A. D., Walker, K. P.
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Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.Abstract Natural hydrogen gas (H2) generated through the serpentinization of mantle rocks is a possible source of clean energy. For efficient serpentinization and large‐scale H2 generation to occur, mantle rocks need to be brought near the surface (exhumed) into a favorable temperature range (the serpentinization window) and in contact with water. Rift‐
Frank Zwaan +6 more
wiley +1 more source
NUMERICAL ASPECTS OF DYNAMIC, GEOMETRICALLY NON-LINEAR CALCULATIONS OF ELASTO-VISCOPLASTIC PLATES
TASK Quarterly, 1999 In the paper numerical aspects of elasto-viscoplastic dynamic calculations of circular plates are presented. Numerical results are compared with experiments carried out in the laboratory.
PAWEŁ KŁOSOWSKI
doaj
Applied SciencesThe contribution presents the verification of the methodology of accelerated creep tests from the point of view of obtaining more information about the stress–strain behaviour of the investigated materials using the Digital Image Correlation method ...
Zbynek Paska +4 more
doaj +1 more source
Discontinuities in regularised media [PDF]
, 2003 Discontinuous interpolation of the problem fields in non-local and rate-dependent media is considered. The necessity of discontinuities in the analysis of failure processes and some of the requirements for the introduction of discontinuities in ...
Simone, A, Sluys, LJ, Wells, GN
core
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.Abstract Underground hydrogen storage in porous formations (UHSP) subjects reservoir rocks to long‐term cyclic effective stress variations, potentially altering storage capacity and injectivity. In this study, we conduct hydrostatic loading tests on 18 Saint‐Maximin limestone (SML) samples (connected porosity 31.9%–37.2%) under various loading paths ...
Zhaochen Xu, Jean Sulem, Philipp Braun
wiley +1 more source
Far-field modelling of THM processes in rock salt formations
Open GeomechanicsGlaciation cycles are one aspect to be considered in assessing the safety of deep geological repository sites for long-term radioactive waste storage. This study examines the impact of time-dependent boundary conditions and thermo-hydro-mechanical (THM)
Florian Zill +4 more
doaj +1 more source