Results 21 to 30 of about 73 (70)

Capturing Complex Rate‐Dependent Behaviors of Saturated Clays: A Fractional Consistency Kinematic Hardening Viscoplastic Approach

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Saturated high plasticity clays show complex nonlinear, rate‐dependent, and hysteresis behaviors under non‐monotonic stress paths, requiring advanced mathematical constitutive equations for accurate description. Taking into account the inherent advantages of kinematic hardening mechanisms in simulating complex stress histories, this paper ...
Wei Cheng, Zhen‐Yu Yin
wiley   +1 more source

A Thermodynamic Framework for Turing‐Type Instabilities in Porous Media: Part I Theory

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Pattern formation in geological materials is commonly described using analogies to Turing‐type reaction–diffusion systems, yet a unifying thermodynamic explanation remains elusive. Here we develop a multiscale, thermodynamically consistent framework for pattern‐forming instabilities in porous media undergoing coupled thermo–hydro–mechanical ...
Klaus Regenauer‐Lieb, Manman Hu, Qingpei Sun, Chong Liu, Zhennan Zhu, Victor Calo   +5 more
wiley   +1 more source

A Reaction‐Cross‐Diffusion Formulation for the Evolution of Compaction Bands

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 3, March 2025.
Abstract We present a new thermodynamically consistent model for the time‐dependent evolution of compaction bands in porous rocks. The model extends a closed‐form analytical solution of compaction band formation for porous media into the time domain.
Qingpei Sun, Klaus Regenauer‐Lieb, Manman Hu   +2 more
wiley   +1 more source

Numerical Investigation Into Mechanical Behavior of Metastable Olivine During Phase Transformation: Implications for Deep‐Focus Earthquakes

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 2, February 2025.
Abstract One hypothesized mechanism that triggers deep‐focus earthquakes in oceanic subducting slabs below ∼300 km depth is transformational faulting due to the olivine‐to‐spinel phase transition. This study uses finite element modeling to investigate phase transformation‐induced stress redistribution and material weakening in olivine.
S. Sindhusuta, Sheng‐Wei Chi, Craig Foster, Timothy Officer, Yanbin Wang   +4 more
wiley   +1 more source

A depth‐integrated SPH framework for slow landslides

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 48, Issue 16, Page 3848-3875, November 2024.
Abstract Slow and very slow landslides can cause severe economic damage to structures. Due to their velocity of propagation, it is possible to take action such as programmed maintenance or evacuation of affected zones. Modeling is an important tool that allows scientists, engineers, and geologists to better understand their causes and predict their ...
Manuel Pastor, Andrei Hernández, Saeid M. Tayyebi, Gustavo A. Trejos, Ginés Suárez, Junwei Zheng   +5 more
wiley   +1 more source

Granular material regime transitions during high energy impacts of dry flowing masses: MPM simulations with a multi‐regime constitutive model

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 48, Issue 15, Page 3699-3724, 25 October 2024.
Abstract The dynamic interaction between granular flowing masses and rigid obstacles is a complex phenomenon characterised by both large displacements and high strain rates. In case the flowing mass is modelled as a continuum, its numerical simulation requires both advanced computational tools and constitutive relationships capable of predicting the ...
Pietro Marveggio, Matteo Zerbi, Irene Redaelli, Claudio di Prisco   +3 more
wiley   +1 more source

m‐AGC tangent visco‐plastic operator with hardening/softening, and application to the visco‐plastic relaxation analysis of stable and unstable problems using fracture‐based geomechanical interfaces

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 48, Issue 11, Page 2762-2789, 10 August 2024.
Abstract A previous perfect visco‐plastic constitutive formulation of the Perzyna type incorporating the concepts of prescribed stress increments and m‐AGC tangent operator (m‐Assumed algorithmic generalized compliance tangent operator) is extended to the case of Hardening/Softening (H/S).
Irene Jaqués, Ignacio Carol
wiley   +1 more source

On the Interplay Between Distributed Bulk Plasticity and Local Fault Slip in Evolving Fault Zone Complexity

Geophysical Research Letters, Volume 51, Issue 14, 28 July 2024.
Abstract We numerically investigate the role of plastic strain accumulation on the mechanical response of a planar strike‐slip fault. Our models show that fault‐zone strength significantly impacts the ensuing sequence of earthquakes. Weaker fault zones accumulating more plastic strain promote more complexity in the seismicity pattern through aperiodic ...
Mohamed Abdelmeguid, Md Shumon Mia, Ahmed Elbanna   +2 more
wiley   +1 more source

Progress and Perspective of Controlling Li Dendrites Growth in All‐Solid‐State Li Metal Batteries via External Physical Fields

Advanced Energy and Sustainability Research, Volume 5, Issue 1, January 2024.
This review focuses on the current research progress of utilizing a variety of external physical fields to regulate lithium dendrites penetration in all solid‐state batteries. To this end, the mechanical properties of lithium and solid electrolytes as well as the experimental results that visually track lithium penetration dynamics are also reviewed ...
Jianhua Yao, Guoxi Zhu, Kang Dong, Markus Osenberg, André Hilger, Henning Markötter, Jiangwei Ju, Fu Sun, Ingo Manke, Guanglei Cui   +9 more
wiley   +1 more source

Advances in Permanent Deformation Modeling of Asphalt Concrete-A Review. [PDF]

Materials (Basel), 2022
Alamnie MM, Taddesse E, Hoff I.
europepmc   +1 more source