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Pore fluid pressure

Submitted by ntoohey on

I am trying to model a simple 2-D consolidation test in Abaqus.  I am essentially applying a distributed line load across the top of a square soil mesh.  The excess pore pressures that are generated are plotting as negatives.  Is this the expected sign convention for a 2-phase soil/water mesh in compression?

Position in Computational Geomechanics

Submitted by jessica.lewis on
job
physics
mathematics
engineering
theoretical geomechanics
rock failure criteria
and constitutive modeling
geophysics

Job Title:Computational Geomechanics Job Summary:ExxonMobil Research and Engineering Company has an immediate opening in Computational Mechanics for research scientist at our Corporate Strategic Research Laboratory. Our lab focuses on fundamental science that can lead to technologies having a direct impact on the oil and gas industry.

double cantilever beam test question

Submitted by dukkipat on
Forums
Ask iMechanica

I have a beginner's question on DCB testing of polymers. The fracture strength during Mode 1 loading increases with crack length due to the compliance of the test specimen. In other words it becomes harder to induce fracture as the crack length increases.Is my understanding correct?

Thanks

Venkat

Phd position in computational mechanics

Submitted by Angelo Simone on
job
fracture
Rocks
soils
xfem
gfem
damage
homogenization
multi-scale
concrete
discontinuities
geomaterials

A fully funded PhD position is immediately available in the area of multi-scale modeling of geomaterials within the research project "Failure of cohesive geomaterials: bridging the scales - GEOBRIDGE" at Laboratoire Sols, Solides, Structures - Risques (3S-R), Université Joseph Fourier, Grenoble, France.

New paper on a Gurson like fracture model for plastically anisotropic materials

Submitted by Anonymous (not verified) on
research
ductile fracture
homogenization
Gurson model
void growth
anisotropic plasticity

Hello All. This is my first blog entry in iMechanica!. This post is about my new paper with Prof. Amine Benzerga entitled "A constitutive model for plastically anisotropic solids with non-spherical voids", accepted for publication in JMPS (URL: http://dx.doi.org/10.1016/j.jmps.2010.03.007 ). In case you are not able to view the online version, a preprint of the paper is attached. This paper should be of interest to anyone working in the ductile fracture area. Your comments and feedback are welcome.

PhD student or Postdoc position in Multiscale Modelling

Submitted by Steffen Brinckmann on
job
molecular dynamics
Fatigue
dislocations

The
Interdisciplinary Centre for Advanced Materials Simulation (ICAMS) is
a new research centre at the Ruhr-University Bochum, Germany. At
ICAMS an interdisciplinary team of scientists from engineering,
materials science, chemistry, physics and mathematics is working on
the development and application of a new generation of simulation
tools for multi-scale materials modelling.

Total or Updated Lagrange?

Submitted by hadi on

Hi Guys,

Would someone let me know if ABAQUS uses total Lagrange or updated Lagrange formulation to calculate the strain-displacement or the so-called B matrix (ref. K J Bathe finite element procedures chapter 6), or whether or not one can switch from total to updated Lagrange and vice versa in ABAQUS?

best,

hadi

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