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Post-doc Vacancy for Molecular Dynamics studies of Polymer Adhesion

Submitted by Erik Van der Giessen on

The Micromechanics of Materials group in Groningen (the Netherlands) has an opening for a PostDoc to study the adhesion of polymers by meands of Molecular Dynamics simulations. The two-year position is part of a collaborative, multiscale modeling project in which other groups in the Netherlands focus on more macroscopic models. More info on http://micromechanics.phys.rug.nl/index.php?s=Openings or by contacting E.van.der.Giessen [at] rug.nl.

How to cut finite elment model from a geometry model?

Submitted by Yue Yang on

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
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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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

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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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?