Results 121 to 130 of about 2,706 (226)

DEFINING DEVIATORIC SECTION OF THE FLUIDITY SURFACE FOR MATHEMATICAL MODELING OF ELASTOPLASTIC BEHAVIOR OF MATERIALS

open access: yesInformatika, 2016
A prospective approach to the development of nonlinear models of elastoplasticity based on the gen-eralization of nonlinear elasticity models is considered.
O. L. Shwed
doaj  

The influence of non–associativity on localization and failure in geomechanics based on gradient elastoplasticity

open access: yes, 2007
We present results of a parametric study on shearband formation in geomaterials, examining the influence of material dilatancy on shearband properties. The study is based on a new higher order continuum theory, called gradient elastoplasticity, developed
Zervos, A   +5 more
core   +1 more source

An Elastoplastic Endochronic Constitutive Model for Soil Considering Multi hardening Mechanisms

open access: yes工程科学与技术, 2009
:In order to establish an elastoplastic stress strain model for soil which conforms to the actual situation,an elastoplastic endochronic constitutive model was developed incorporating the multi hardening mechanisms and the interaction between deviatoric ...
doaj  

Research and application of high temperature low-density elastoplasticity cement slurry

open access: yesYouqicang pingjia yu kaifa, 2020
In Ordovician of Tahe Oilfield, the bottom hole temperature is high, the seam hole is developed, the leakage easily occurs, and the annular clearance of cementing is small. Therefore, the conventional low density cement slurry system cannot guarantee the
PENG Jinlong, LI Quanshuang
doaj  

Qualitative and Numerical Analysis of Quasistatic Problems in Elastoplasticity

open access: yes
. The quasistatic problem of elastoplasticity with combined kinematic-isotropic hardening is formulated as a time-dependent variational inequality (VI) of the mixed kind, that is, it is an inequality involving a nondifferentiable functional and is ...
Gregory C. Schroeder   +2 more
core  

Improved Elasto-plasticity Damage Constitutive Models for Concrete

open access: yes工程科学与技术, 2011
:In order to improve the limitation and lacuna of the traditional damage constitutive models for concrete,by using Hsieh-Ting-Chen four-parameter yield function,which could reflect the different strength characteristics of concrete in tension and ...
徐强, 陈健云, 白卫峰, 刘智光
doaj  

Development and preliminary numerical investigations of a dislocation density-based finite-strain rate-dependent elastoplasticity constitutive model [PDF]

open access: yes
Development and preliminary numerical investigations of a dislocation density-based finite-strain rate-dependent elastoplasticity constitutive model Finite-strain elastoplasticity constitutive models suitable for process-scale simulation are typically ...
Garschagen, Emma
core   +1 more source

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