Earth science: Missing link in mantle dynamics
http://www.nature.com/nature/journal/v507/n7490/full/nature13064.html
Disclinations provide the missing mechanism for deforming olivine-rich rocks in the mantle
http://www.nature.com/nature/journal/v507/n7490/full/nature13043.html
Abstract:
Hello all,
I want to simulate loading of 2D RVE of dual phase steels, by giving individual phases properties, to get homogenised mechanical properties like yield strength, % elongation etc, using micromechanics based approach. Litterature shows people have used two kinds of boundary condition viz. Periodic boundary condition and homogenous boundary condition for this case. My doubt is two folds:
1) What is the theoretical difference between these two kinds of boundary conditions?
I am modelling a very simple 2D contact problem between a rigid indenter and a deformable squared-shape specimen. I used a implicit function f to describe the rigid indenter.
The contact condition is: Inside the contact zone of the deformable specimen, a node n is outside of rigid indenter for f(n)>0, and inside for f(n)<0. In case f(n)=0, the contacting node lies on the surface of the rigid body.
I did a 2D beam bending problem with CST and Q4 element, respectively. CST gives better accuracy. Is it due to the shear locking effect with Q4?
Hi everyone,
I am performing FSI simulation under abaqus.
The simulation consists in a porous solid (elastic isotrope and homogeneous under Abaqus/explicit) filled by a non newtonian (viscous fluid under Abaqus/CFD). The whole is contained in a cubic shell in order to apply proper boundary condition.
Hydrogenation-Assisted Graphene Origami and Its Application in Programmable Molecular Mass Uptake, Storage, and Release
Shuze Zhu and Teng Li, ACS Nano, 8 (3), pp 2864–2872 (2014)
Faculty from Caltech, UC Berkeley , University of Michigan, Georgia Tech, Brown University, University of Calgary, University of Pennsylvania, UCLA, Johns Hopkins University, Imperial College, London, and UCSD and researchers from the Lawrence Livermore National Laboratories congregated to UCSD on January 18-19, 2014 to attend the third in a series of symposia on Multiscale Dislocation Dynamics and to honor Professor Michael Ortiz on his 60th birthday. Faculty also brought their graduate students and postdocs to engage in such a powerful intellectual activity.
I am interested in developing a global-local finite element model (micro/macro) to simulate flexural testing of a composite material. Flexural loading will be applied on global model (macro) and crack propagation will be simulated in the local model (micro). I want to compare stress intensity factor or any other fracture property obtained from local model (micro) with that of experimental results.
I would appreciate if anyone could suggest some references/literature in this area. Any kind of suggestions would be great!
Venkata
In this paper, a phenomenological constitutive
model based on microplane model is used to simulate tension, torsion and proportional tension-torsion on NiTi thin-walled tube. Validation of the
microplane model against experimental results in different loading conditions demonstrates
the capability of this approach.
This publication will benefit the numerical and experimental study on SMAs.
Normal
0
false
false
false
EN-US
X-NONE
AR-SA
