Results 41 to 50 of about 4,480,761 (104)
International 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
3D nonlinear coupled modelling of geomaterials using the unconventional Subloading Surface approach [PDF]
, 2013 The purpose of the work presented in this thesis is aimed to investigate the nonlinear behaviour of porous media, in detail soils, by means of an unconventional plasticity model named subloading surface.
Fincato, Riccardo
core
Revisiting strain localization analysis for elastoplastic constitutive models in geomechanics
International Journal for Numerical Methods in Engineering, Volume 125, Issue 24, 30 December 2024.Abstract The localization of deformations plays a crucial role in the failure of granular materials. Concerning classical continuum constitutive models, the localization of deformations is considered to be connected to the loss of ellipticity of the governing rate equilibrium equations, and entails mesh sensitivity in finite element simulations.
Paul Hofer +3 more
wiley +1 more source
Surface profile prediction and analysis applied to turning process [PDF]
, 2008 An approach for the prediction of surface profile in turning process using Radial Basis Function (RBF) neural networks is presented. The input parameters of the RBF networks are cutting speed, depth of cut and feed rate.
LU, Chen, COSTES, Jean-Philippe
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Nihon Kikai Gakkai ronbunshuWe investigate the deformation behavior of the ballast layer under a grid-type sleeper, using the elastoplastic FEM with the extended subloading surface model.
Kazuhiro KORO
doaj +1 more source
Constitutive Modelling of the Cyclic Response of Unsaturated Soils: A Discussion of the State‐of‐Art
Shock and Vibration, Volume 2024, Issue 1, 2024.Site response analysis (SRA) is an important aspect of seismic design that considers the impact of local site conditions on the ground response during earthquakes and plays a key role in the design of structures that interact or are made with soil. Although previous studies have demonstrated that factors such as the degree of saturation influence the ...
Rodrigo Perez +3 more
wiley +1 more source
Surface roughness prediction in milling based on tool displacements [PDF]
, 2011 In this paper, an experimental device using non-contact displacement sensors for the investigation of milling tool behaviour is presented. It enables the recording of high frequency tool vibrations during milling operations.
MOREAU, Vincent +3 more
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Elastoplastic analysis of mises metal by return-mapping algorithm for extended subloading surface model [PDF]
, 2019 The extended subloading surface model is capable of representing not only monotonic but also cyclic loading behaviors accurately. The various return-mapping methods have been adopted to for the elastoplastic deformation analysis in FEM incorporating the ...
Anjiki, Takuya +2 more
core +1 more source
E3S 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
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Subloading-overstress friction model
Nihon Kikai Gakkai ronbunshu, 2014 The subloading-friction model proposed formerly is capable of describing the transition from the static to the kinetic friction and the recovery of static friction, which leads to the negative rate-sensitivity, i.e.
Koichi HASHIGUCHI +4 more
doaj +1 more source