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How to cut finite elment model from a geometry model?

Submitted by Yue Yang on
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Hello all! I imported an .inp file model which was converted from another .am file into Abaqus. This model (model 1) doesn’t include any geometry information but only has 3D finite element model. I want to create an air model (Cube) surrounding model 1, subtracting model 1 from air model and leave a hole whose shape is the same as model 1. Then I want to insert model 1 to the hole again and compute acoustic problem. The question is: I can’t use ‘cut/merge’ function in Abaqus because there is no geometry information in model 1. Could someone tell me how to do that? Thanks very much.

Continuum interpretation of virial stress in molecular simulations

Submitted by Arun K. Subramaniyan on
research
molecular dynamics
Virial Stress
Arun K. Subramaniyan and C. T. Sun, accepted for publication in International Journal of Solids and Structures, doi:10.1016/j.ijsolstr.2008.03.016

The equivalence of the virial stress and Cauchy stress is reviewed
using both theoretical arguments and numerical simulations. Using
thermoelasticity problems as examples, we numerically demonstrate that
virial stress is equivalent to the continuum Cauchy stress. Neglecting

How to do sound transmission in solid in Abaqus?

Submitted by Yue Yang on
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Biomechanics Forum
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Hello all. I am a phd student from UNB. Now I want to use Abaqus to simulate acoustic problem which is sound transmission from fluid such as air to solid. The outputs I want to get are acoustic pressure in fluid and solid, especially inside solid. What I did before is treating solid as fluid by using acoustic medium. However, the mechanics of solids are fundamentally different from fluids, and its not sensible to treat them the same. For example solids support shear, while fluids do not. Hope someone could answer my question. Thanks a lot.

PhD projects in computational fracture and computational/theoretical fluids at University of Melbourne

Submitted by Petar Liovic on
job
fracture
computational mechanics
multiscale
damage
CFD

The Australian Mineral Science Research Institute (AMSRI) is a consortium of Australia's best scientists working in minerals industry-related fields. Research activities span the breadth of minerals processing, with major themes of the research being energy efficiency, frugal water use and efficient management of waste. The Mathematics program of AMSRI performs modelling and analysis research across multiple minerals processing areas, including comminution, flotation and waste treatment.

a question about ALE method

Submitted by Yan Liu on
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Computational Mechanics Forum
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ALE in initial configuration

hi, I'm a student studying ALE method. In the book of "Nonlinear Finite Elements for Continua and Structures" written by Ted Belytschko el, conservation equations which discribed in the reference configuration and current configuration are given out (see chapter 7). But how about Balance Laws in initial configuration?

a review of a paper by HD Bui found in the internet !!

Submitted by Mike Ciavarella on
mechanician
Internet
Review
hd bui
future of solid mechanics

dear iMechanica friends



I came across a review of a paper by HD Bui who was somewhere in the internet, and I find it is very interesting. I could even have written this review myself !!  I don't think the reviewer exaggerates....



michele

difficulties CONTACT problem with plasticity using ABAQUS FEA code.

Submitted by lazghabt on
research
ABAQUS
contact
FEA
CShear

Hello everyone:

1.  I have built a FEM model 2D plane strain using ABAQUS/Standard (CPE4R) elements,

2. I am  modeling the contact between a cylinder and a plate in 2D.

3. The Cylinder material is given is ELASTIC ISOTROPIC material with no plasticit E=310 GPa

4.  The plate is with a Ramberg-Osgood plasticity with a Young's modulus E=210 GPa.

5. The mesh at the the contact point is VERY refined element characteristic length is about 1 micron. (My model units are  (mm,N,sec)).

Michael Ortiz wins inaugural Rodney Hill Prize in Solid Mechanics

Submitted by Dean Eastbury on
solid mechanics
Rodney Hill Prize

I am delighted to announce on behalf of Elsevier that Professor Michael Ortiz of CalTech has won the very first Rodney Hill Prize in Solid mechanics in reconition of his body of research during the decade 1998-2007. The prize will be presented at ICTAM in Adelaide on 27 August by Y.S. Chi, Vice Chairman of Elsevier immediately prior to Michael's Hill Prize lecture. For more details please see http://www.elsevier.com/wps/find/P10.cws_home/hillprizewinner

Dean Eastbury

Publisher

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