Results 11 to 20 of about 42,214 (237)
International Journal for Numerical Methods in Engineering, 2003 AbstractThis paper describes the implicit integration and consistent tangent modulus of an inelastic constitutive model with transient and steady strain rates, both of which are time‐ and temperature‐dependent; the transient rate is influenced by the evolution of back stress decomposed into parts, while the steady rate depends only on applied stress ...
Kobayashi, M. +5 more
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General formulation for local integration in standard elastoplasticity with an arbitrary hardening model. [PDF]
, 2003 International audienceThis paper describes a general method for deriving the plastic corrections and the consistent tangent modulus for a wide range of arbitrary non-linear hardening models within the framework of standard small strains elastoplasticity.
de Saxcé, Géry +2 more
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Nihon Kikai Gakkai ronbunshu, 2016 Elastoplastic analysis of solid structures under cyclic loadings is increasingly required in recent years. To this end, it is necessary to adopt elastoplastic model capable of describing cyclic loading behavior and to employ stress integration algorithm ...
Takuya ANJIKI +2 more
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Strain localization analysis using a multiscale model [PDF]
, 2007 In order to analyze the formability of steels in sheet metal forming, a ductility loss criterion is coupled with a multiscale model. The behavior at the mesoscopic (grain) scale is modeled by a large strain micromechanical constitutive law, which is then
ABED-MERAIM, Farid +4 more
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Results in Physics, 2023 In the current work electrical and ion transport parameters of polymer electrolyte (PE) system of chitosan (Ch)/poly(2-oxazoline) (POZ)loaded with various concentrations of lithium nitrate (LiNO3) salt were studied.
Peshawa O. Hama +5 more
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Yantu gongcheng xuebao, 2018 The overconsolidated unsaturated soils emerge in many engineering projects. The constitutive models for unsaturated soils are very complicated due to the complex mechanical beahviour of overconsolidated unsaturated soils. A modified constitutive model is
LI Wu-gang 1, 2, YANG Qing 1
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Stiffness of clays and silts: Modeling considerations [PDF]
, 2014 A large database has recently been published that details the development of new empirical expressions for the stiffness reduction with strain of clays and silts.
Bolton, Malcolm, Vardanega, Paul J
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Nihon Kikai Gakkai ronbunshu, 2019 The extended subloading surface model is capable of describing cyclic loading behavior accurately. The elastoplastic deformation analysis by the finite element analysis can be executed efficiently by the complete implicit stress integration method with ...
Takuya ANJIKI +2 more
doaj +1 more source
Tangent modulus in numerical integration of constitutive relations and its influence on convergence of N-R method [PDF]
Applied and Computational Mechanics, 2009 For the numerical solution of elasto-plastic problems with use of Newton-Raphson method in global equilibrium equation it is necessary to determine the tangent modulus in each integration point. To reach the parabolic convergence of Newton-Raphson method
Poruba Z., Halama R.
doaj
Stabilized four-node tetrahedron with nonlocal pressure for modeling hyperelastic materials [PDF]
, 2008 Non-linear hyperelastic response of reinforced elastomers is modeled using a novel three-dimensional mixed finite element method with a nonlocal pressure field. The element is unconditionally convergent and free of spurious pressure modes.
Areias, P., Matou, K.
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