Results 31 to 40 of about 256 (102)
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
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Influence of longitudinal structural connectivity on seismic performance of three-hinged precast arch culverts [PDF]
, 2021 The hinge type of precast concrete arch culvert was introduced to Japan from France in the 1990s in consideration of the saving of labor, shortening of the construction period, and high quality control of the concrete members.
Kimura, Makoto +3 more
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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
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
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
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Journal of applied mechanics, 2008 The stagnation phenomenon of isotropic hardening is observed in the cyclic loading behavior of metals. An extended formulation of this phenomenon is formulated so as to describe the smooth evolution of isotropic hardening by incorporating the concept of the subloading surface, which falls within the framewodc of stress space formulation. In addition it
Koichi Hashiguchi, Toshiyuki Ozaki
openaire +2 more sources
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
3D modelling of geomaterials accounting for an unconventional plasticity approach [PDF]
, 2011 The coupled hydro-mechanical state in geomaterials undergoing plasticity phenomena is here evaluated by means of the subloading surface model . The most important feature of this theory is the abolition of the distinction between the elastic and plastic ...
Fincato, Riccardo +1 more
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Software for evaluating probability-based integrity of reinforced concrete structures [PDF]
, 2004 In recent years, much research work has been carried out in order to obtain a more controlled durability and long-term performance of concrete structures in chloride containing environment.
Ferreira, Rui Miguel +2 more
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