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Energy Balance Invariance for Interacting Particle Systems

Submitted by arash_yavari on

This paper studies the invariance of balance of

energy for a system of interacting particles under groups of

transformations. Balance of energy and its invariance is first

examined in Euclidean space. Unlike the case of continuous media,

it is shown that conservation and balance laws do not follow

from the assumption of invariance of balance of energy under

time-dependent isometries of the ambient space. However, the

postulate of invariance of balance of energy under arbitrary

Crack propagation in ABAQUS for a mode II kind of crack opening

Submitted by pthiyaga on

I am modelling a system subjected to a thermal shock, where in there are both vertical cracks (mode I ) and also infacial cracks (cracks that primarily fail by delaminaton-mode II)

 For vertical cracks, Iam able to get reasonable answers for mode I crack propagation in ABAQUS using a critical crack opening displacement criterion. However when it comes to interfacial crack, I dont know how to propagate it becz all the criterion in the debond subroutines in abaqus assume a mode I kind of crack opening.

Is my assumption wrong ? Can anyone help me out in this?

LiquidPub Project: Scientific Publications meet the Web, a project from University of Trento

Submitted by Mike Ciavarella on
Liquid Publications: Scientific Publications meet the Web

Some very interesting projects from University of Trento. Changing the way scientific knowledge is produced, disseminated, evaluated, and consumed

A Ph.D.+MSc Position on Brain Surgery Simulation by XFEM and FleXFEM

Submitted by Stephane Bordas on

High Performance Computing MSc+Ph.D. position available at the University of Glasgow on Massively Parallel Brain Surgery Simulation with the extended finite element method (XFEM and FleXFEM)  (University of Glasgow) -- funding body is EPSRC.

One year MSc in HPC in Edinburgh (all costs covered by funding) + 3 year Ph.D.  and access to HecToR, one of the world's largest super-computer, including training with experts in massively parallel simulation (10,000+ processors).

Professor Zhigang will give lectures at Tongji University, Shanghai China

Submitted by zhan-sheng guo on

from the prof. Ying Dai:

Prof. Zhigang will give two lectures on 1:45pm, 29 May, 2008 at Tongji University, Shanghai China.

Position is the second floor meeting room of Run Run Shaw building.

 1. from Learning Harvard University to The National Academy of Engineering (NAE) of American

2.  Mechanics of Soft Active Materials

Invalid Geometry Problem!!!!

Submitted by nina333 on

Hi all

I have posted two posts before and NO BODY has REPLIED to my questions....

please i need some help with my ABACUS....I have my data and whenever i run my data on ABACUS it says INVALID GEOMETRY...

If any any one knows how to solve this as i have tried searching the web and go through tools---> repairs and still not working...

 

Thank you

Nina

reverse shoulder implant

Submitted by nina333 on

 

dear all

I need help in my work i started to work with ABACUS and i suppose to work with shoulder data to review the reverse implant inside this shoulder.

 i can not explain this very well but i need some expert in ABACUS to ask them what to do exactly or at least get me started.

 Pleaseeeeeeeee i need an URGENT help......FROM ANY ONE.

please reply to me on: nl1422 [at] hotmail.com (nl1422[at]hotmail[dot]com)

Need softwares that can Model Multilayer Thin Film Coatings

Submitted by SudhirBrahmandam on

Hi,

 I want to know what are some useful softwares in which I can simulate multilayer coatings in terms of thermal (CTE mismatch) stresses, and stresses due to contact type loading. I am looking for softwares that are easy to use by a person like me who has an experimental background, does not have exposure to using Abaqus, but can use softwares like Matlab.

 Thank you in advance for your suggestions.

Regards,

Sudhir