Results 61 to 70 of about 471 (140)

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, Matthias Neuner, Peter Gamnitzer, Günter Hofstetter   +3 more
wiley   +1 more source

Simulation of wellbore construction in offshore unconsolidated methane hydrate-bearing formation [PDF]

, 2018
The unconsolidated nature of offshore methane hydrate-bearing formation poses challenges to sustainable methane gas production as the weak formation is susceptible to disturbance during wellbore construction.
Elshafie, MZEB, Sasaki, T, Soga, K
core   +1 more source

Accurate prediction of spring-back phenomenon by subloading surface mode [PDF]

, 2019
The subloading surface model possesses the distinguished capability to describe the plastic strain rate for the rate of stress inside the yield surface accurately and the stresscontrolling function to pull-back the stress to the yield surface even when ...
Hashiguchi, Koichi, Tateishi, Motoharu
core   +2 more sources

Finite element analysis of ballast layer deformation caused by wheel passing through a rail joint with a grid-type sleeper

Nihon Kikai Gakkai ronbunshu
We 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, Tony Fierro, Filippo Santucci de Magistris, Manoj Khandelwal   +3 more
wiley   +1 more source

A unified description of Toyoura sand [PDF]

, 2012
application/pdfBeijing, China, 15-16 October 2012conference ...
1000070303691, 14723, 14724, 8619, Bin, Ye, Guanlin, Ye, Zhang, Feng   +6 more
core   +1 more source

Research Activities of JWRI [PDF]

, 2016
s of the ...

core  

Extension of subloading surface model for accurate prediction of elastoplastic deformation behavior of metals with cyclic softening

Nihon Kikai Gakkai ronbunshu, 2014
The subloading surface model has been formulated and applied to the prediction of cyclic loading behavior of metals. However, the existing formulation of this model is limited to metals exhibiting only the cyclic hardening.
Ryota HIGUCHI, Kazuo OKAMURA, Fumio OHTA, Koichi HASHIGUCHI   +3 more
doaj   +1 more source

Consolidation of Clay and Compaction of Sand : An elasto-plastic description [PDF]

, 2004
Naturally deposited clays/sands are mostly found in structured, and usually also in overconsolidated states. Furthermore, they exhibit what is more or less a condition of anisotropy.
ASAOKA, Akira
core   +1 more source

Elastoplastic deformation analysis by return-mapping and consistent tangent modulus tensor based on subloading surface model (2st Report, Deformation analyses of machine elements)

Nihon Kikai Gakkai ronbunshu, 2014
The implicit stress integration algorithm was devised in the first report by formulating the return-mapping based on the cutting-plane projection and the consistent tangent modulus tensor due to the numerical method for the subloading surface model.
Noriyuki SUZUKI, Koichi HASHIGUCHI, Masami UENO   +2 more
doaj   +1 more source