Results 51 to 60 of about 471 (140)

Seismic performance of group pile foundation with ground improvement during liquefaction [PDF]

open access: yes, 2021
A pile foundation with ground improvement under the footing is a composite foundation with the objectives of enhancing the seismic performance and rationalizing the substructure by combining the pile foundation with ground improvement.
Hattori, Masahiro   +5 more
core   +1 more source

Cyclic plasticity model for fatigue with softening behaviour below macroscopic yielding

open access: yesMaterials & Design, 2019
Experimental observations have evidenced the insufficiency of yield surface definition via monotonic loading to guarantee adequate description of material behaviour under fatigue tests.
S. Tsutsumi, R. Fincato
doaj   +1 more source

Analysis of Springback Behaviour in Micro Flexible Rolling of Crystalline Materials

open access: yesAdvances in Materials Science and Engineering, Volume 2018, Issue 1, 2018., 2018
This paper presents a constitutive modelling of the polycrystalline thin metal strip under a state of combined loading in microflexible rolling. The concept of grained inhomogeneity is incorporated into the classic Chaboche hardening model that accounts for the Bauschinger effect, in order to provide more precise description and analysis of the ...
Feijun Qu   +4 more
wiley   +1 more source

Comparison study of constitutive models for overconsolidated clays [PDF]

open access: yes, 2020
Widely distributed in natural deposits, the overconsolidated (OC) clays have attracted extensive experimental investigations on their mechanical behaviors, especially in the 1960s and 1970s.
Gao, Zhiwei, Wan, Zheng, Yao, Yangping
core   +1 more source

Unified Description of the Mechanical Properties of Typical Marine Soil and Its Application

open access: yesShock and Vibration, Volume 2017, Issue 1, 2017., 2017
This study employed a modified elastoplastic constitutive model that can systematically describe the monotonic and cyclic mechanical behaviors of typical marine soils combining the subloading, normal, and superloading yield surfaces, in the seismic response analysis of three‐dimensional (3D) marine site.
Yongqiang Li   +5 more
wiley   +1 more source

A viscoplasticity model with an enhanced control of the yield surface distortion

open access: yes, 2012
A new model of metal viscoplasticity, which takes combined isotropic, kinematic, and distortional hardening into account, is presented. The basic modeling assumptions are illustrated using a new two-dimensional rheological analogy.
Ihlemann, J., Shutov, A. V.
core   +1 more source

A Mathematical Approach to Establishing Constitutive Models for Geomaterials

open access: yesJournal of Applied Mathematics, Volume 2013, Issue 1, 2013., 2013
The mathematical foundation of the traditional elastoplastic constitutive theory for geomaterials is presented from the mathematical point of view, that is, the expression of stress‐strain relationship in principal stress/strain space being transformed to the expression in six‐dimensional space.
Guang-hua Yang   +3 more
wiley   +1 more source

Fully undrained cyclic loading simulation on unsaturated soils using an elastoplastic model for unsaturated soils

open access: yesE3S Web of Conferences, 2016
Several researchers have reported that Bishop’s mean effective stress decreases in unsaturated soils under fully undrained cyclic loading conditions, and unsaturated soils are finally liquefied in a similar manner as saturated soils.
Komolvilas Veerayut, Kikumoto Mamoru
doaj   +1 more source

A Discrete Element Method–Based Energetic Approach to Model Two‐Dimensional Fatigue Crack Propagation

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 49, Issue 5, Page 1420-1436, 10 April 2025.
ABSTRACT In this work, a fatigue crack propagation model is proposed using the two‐dimensional discrete element method (DEM). The challenge lies in describing the small progressive fatigue crack growth within a single cycle, which is typically much smaller than the size of the smallest particles, making it difficult to continuously capture the loss of ...
Lei Ma   +3 more
wiley   +1 more source

Subloading surface plasticity model algorithm for 3D subsidence analyses above gas reservoirs [PDF]

open access: yes, 2011
The coupled hydro-mechanical state in soils coming from consolidation/subsidence processes and undergoing plasticity phenomena is here evaluated by means of the subloading surface model.
Fincato, Riccardo L.   +1 more
core   +2 more sources

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