Results 31 to 40 of about 103 (87)

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

Análise e implementação de modelo constitutivo de viscoplasticidade em regime de deformação finita: aplicação em polímeros termoplásticos [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2014Nas últimas décadas a aplicação de componentes feitos de materiais poliméricos sofre um aumento ...
Jenovencio, Guilherme
core  

Anisotropic creep model for soft soils

, 2008
In this paper a new anisotropic model for time-dependent behaviour of soft soils is presented. The formulation is based on a previously developed isotropic creep model, assuming rotated Modified Cam Clay ellipses as contours of volumetric creep strain ...
Leoni, Martino, EC MRTN-CT-2004–512120 (Funder), , EC MRTN-CT-2004–512120 (Funder), , Academy of Finland Grant 210744 (Funder), Academy of Finland Grant 210744 (Funder), , University of Stuttgart, Vermeer, Pieter, University of Stuttgart, University of Strathclyde, , University of Strathclyde, Karstunen, Minna   +10 more
core   +1 more source

A Comparative Study of Vibrations of Elasto-Viscoplastic Shells and Plates

Engineering Transactions, 1995
A method of solution of the problem of nonlinear vibrations of elasto-viscoplastic plates and shells is presented, based on the first order shear deformation-moderate rotation theory of the laminated shells. Viscoplastic material behaviour is taken into
P. Kłosowski, K. Woźnica, D. Weichert
doaj  

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

Microstructural behaviour of solder alloys

, 2004
In this contribution a strongly nonlocal diffuse interface theory is used to model the microstructure evolution of a multiphase solder alloy. The mechanical behaviour of the material is modelled using a hyperelasto-viscoplastic Perzyna model.
Ubachs, R.L.J.M., Zhang, G.Q., Saint Leger, O, Schreurs, P.J.G., Ernst, L.J., Rodgers, P., Geers, M.G.D.   +6 more
core   +2 more sources

Mixed Finite Element Solution of Quasi-Static Problems of Viscoplastic Plates

Engineering Transactions, 1980
The paper is concerned with the numerical analysis of rigid, viscoplastic and elastic viscoplastic plates subjected to static loading. The small deflection theory of thin plates is employed.
M.J. Mikkola, K. Saloviin
doaj  

Viscoelastic plastic creep constitutive model based on energy conservation law and strain energy theory

Scientific Reports
On the basis of the law of conservation of energy, the three stages of rock creep are analyzed. The reasons for the difficulty in studying the accelerated creep stage of rocks using the traditional creep model are expounded.
Di Zhou, Xiangjin Tian, Shuguang Zhang, Wang Zeng, Minye Zhang, Yanchao Feng, Wenbo Liu, Xiang Huang, Mingzhuo Fan, Ye Sun   +9 more
doaj   +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