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A Geometric Structure-Preserving Discretization Scheme for Incompressible Linearized Elasticity

Submitted by arash_yavari on Wed, 03/06/2013 - 06:38

In this paper, we present a geometric discretization scheme for incompressible linearized elasticity. We use ideas from discrete exterior calculus (DEC) to write the action for a discretized elastic body modeled by a simplicial complex. After characterizing the configuration manifold of volume-preserving discrete deformations, we use Hamilton's principle on this configuration manifold. The discrete Euler-Lagrange equations are obtained without using Lagrange multipliers.

Building and Environment: Virtual Special Issue on CFD simulation of micro-scale pollutant dispersion in the built environment

Submitted by Laure Ballu on Tue, 03/05/2013 - 15:34

The full articles selected for this Virtual Special Issue are freely available until 28 May 2013, from the Journal Homepage

Research highlights:

• Outdoor air quality is one of the major environmental problems today

• Micro-scale pollutant dispersion covers the building scale and the meteorological micro-scale

Post Doctoral Research Assistantship in Computational Mechanics available at Institut de Physique du Globe, Paris France

Submitted by harshasbhat on Tue, 03/05/2013 - 10:27

research

post doctoral assistantship

Journal Club Theme of March 2013: Interfacial Adhesion of Graphene - Measurements and Analysis

Submitted by Rui Huang on Sat, 03/02/2013 - 00:28

Several recent papers have reported measurements of adhesion energy between graphene and other materials (e.g., Si/SiOx and copper) [1-3]. Like thin films, many experimental methods may be adopted to measure the interfacial properties of graphene, such as the pressurized blister test [2] and the double-cantilever beam test [3]. The challenges lie in the handling of atomically thin membranes and analysis/interpretation of the data.

Aqua load by python

Submitted by Arturo on Fri, 03/01/2013 - 13:42

Dear All

I am quite new in this area.

Somebody can give me an idea on:

How to impose aqua loads by phyton scripting in abaqus?

Thanks in advance

Polluelo

A question about RPIM shapefunction

Submitted by 11hours on Fri, 03/01/2013 - 03:06

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Computational Mechanics Forum

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rpim shape function

I am solving a simple solid mechanics problem by meshless method. use RPIM to calculate shape function.

when i calculate the derivatives of shape function, i found the derivative is not close to zero at the compute point, when the point is on the boundry of problem domain.

My question is, should the derivative be zero if the node is on the boundry?

Ph.D. Position on Magnetorheological Elastomers at Ecole Polytechnique, France

Submitted by Kostas Danas on Thu, 02/28/2013 - 15:12

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numerical methods

magnetorheological Elastomers (MRE)

experiments

One Ph.D. position is now available starting October 2013 on magnetorheological elastomers in the Solid Mechanics Laboratory of Ecole Polytechnique, France. The potential student will work on the development of new experimental procedures and high fidelity numerical models for the understanding and constitutive description of microstructured magnetorheological solids. Students with strong interest in new coupled problems and strong background in engineering, physics or/and mechanics are encouraged to apply.

Stress strain for blind bolt steel

Submitted by Sadeqkeewan on Wed, 02/27/2013 - 23:20

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Materials Forum

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Hello,

If i know the yield stress,ultimate stress, and modules of elasticity.can i predict the behavior of stress strain in the plastic region using some kind of model.?

Thank you

Mathematics and Mechanics of Complex Systems - a new journal

Submitted by Ostoja-Starzewski on Wed, 02/27/2013 - 15:07

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mathematics mechanics complex systems

A new scientific journal, Mathematics and Mechanics of Complex Systems (MEMOCS) [http://msp.org/memocs/], has been launched this winter. You may view the first edition at http://msp.org/memocs/2013/1-1/index.xhtml. MEMOCS is a very unique publication in several ways: a
nonprofit publication owned, managed, and supported by academic
institutions from countries all over the world. Because it is supported
by these sponsoring institutions, subscription fees and page charges are
not necessary, and electronic access to the publication is open
and free to all. Accepted manuscripts are published free of charge

Questions about RPIM shapefunction

Submitted by 11hours on Wed, 02/27/2013 - 04:56

research

meshless

rpim

derivative of shape function

I am solving a simple solid mechanics problem by meshless method. use RPIM to calculate shape function.

when i calculate the derivatives of shape function, i found the derivative is not close to zero at the compute point, when the point is on the boundry of problem domain. and good derivative result can be got if the compute point is in problem domain.

is there anybody has experience in working with RPIM shape function help me to fix the problem?

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