Vorticity and non-coaxiality in progressive deformations
Journal of Structural Geology, 1980 A measure of the non-coaxiality involved in progressive deformation histories is proposed in the form of the kinematical vorticity number, Wk. This number is a measure of the relative effects of rotation of material lines (relative to the instantaneous stretching axes) and of stretching of these material lines.
Means, W.D. +3 more
openaire +2 more sources
Application of a Non-Coaxial Soil Model with an Anisotropic Yield Criterion in Tunnelling
Advances in Materials Science and Engineering, 2019 Soil strength isotropy and coaxiality of the principal axes of stress and plastic strain rate tensors are often assumed in modelling the soils around tunnels, in the conventional plastic theory.
Ran Yuan +5 more
doaj +1 more source
Experimental Study on Mechanical Properties of Rockfill Materials under Constant p and Constant b Stress Paths [PDF]
长江科学院院报[Objective] Under the actual filling conditions of high rockfill dams, rockfill materials are typically subjected to complex three-dimensional stress states.
PAN Jia-jun, WANG Jun-peng, ZHOU Yue-feng, WAN Hang, SUN Xiang-jun, HAN Bing
doaj +1 more source
Experimental investigation on the deformation characteristics of granular materials under drained rotational shear [PDF]
, 2015 Rotational shear is the type of loading path where samples are subjected to cyclic rotation of principal stress directions while the magnitudes of principal stresses are maintained constant.
Li, X, Wanatowski, D, Yang, LT, Yu, HS
core +1 more source
Unified anisotropic elastoplastic model for sand [PDF]
, 2016 This paper presents a unified approach to model the influence of fabric anisotropy and its evolution on both the elastic and plastic responses of sand.
Gao, Zhiwei, Zhao, Jidong
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A new model of fluid flow to determine pressure balance characteristics [PDF]
, 2013 Some projects such as the EUROMET project 463 have underlined the lack of agreement between experimental measurements and calculations by the finite element method (FEM), used to determine the piston fall rate of a high-pressure balance used in primary ...
NOGUERA, Ricardo +3 more
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Macroscopic model with anisotropy based on micro-macro informations [PDF]
, 2014 Physical experiments can characterize the elastic response of granular materials in terms of macroscopic state-variables, namely volume (packing) fraction and stress, while the microstructure is not accessible and thus neglected.
Kumar, Nishant +2 more
core +7 more sources
DEM investigation on characteristics of rolling resistance for modelling particle shape
EPJ Web of Conferences, 2017 To examine the capability of rolling resistance to model the effects of particle shape, two sets of samples, composed of binary clumped particles and circular particles with rolling resistance, are tested in DEM simulation.
Zhou Lunlun, Chu Xihua, Xu Yuanjie
doaj +1 more source
Effects of principal stress rotation on the wave–seabed interactions [PDF]
, 2016 This paper simulates the wave–seabed interactions considering the principal stress rotation (PSR) by using the finite element method. The soil model is developed within the framework of kinematic hardening and the bounding surface concept, and it can ...
DS Jeng +18 more
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A Soil Model Considering Principal Stress Rotations [PDF]
, 2014 This paper presents an elastoplastic soil model considering the principal stress rotation (PSR). The model is developed on the basis of a well-established kinematic hardening soil model using the bounding surface concept.
Yang, YM, Yu, H-S
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