iMechanica

Hi All

I need ur help to know how can I use ABAQUS to model welding fracture ....

THX  

Watch the 3-part video seminar where Sia Nemat-Nasser discusses certain basic issues regarding systematic homogenization techniques to extract the frequency‐dependent dynamic properties of microstructurally periodic composites, illustrating the results in terms of measureable and experimentally verifiable quantities.  To watch the videos, go to http://tinyurl.com/caudkwp

An der Fakultät Bauingenieurwesen der Bauhaus-Universität Weimar ist ab sofort an der Professur "Modellierung und Simulation - Mechanik" die Stelle einer/eines

wissenschaftlichen Mitarbeiterin / Mitarbeiters

zu besetzen. Die Stelle ist zunächst für die Dauer von 2 Jahren befristet. Eine Verlängerung ist nach den geltenden Regelungen des Wissenschaftszeitvertragsgesetzes (WissZeitVG) möglich. Es handelt sich um eine Vollzeitstelle. Die wöchentliche Arbeitszeit beträgt 40 Stunden.

Aufgabengebiet:

Edited by Pieter de Wilde and David Coley, this special issue of Building and Environment deals with the implications of a changing climate for buildings. Climate change is considered to be one of the main challenges facing humankind in the 21st century, with serious and global consequences for the environment, human health, and the economy. 

The group of Advanced Materials and Dynamics
Lab at the University of Arkansas at Little Rock is seeking one highly
motivated candidate for Ph.D. positions. The appointment is starting on January
2013 or August 2013. The research topics involve dynamic modeling, elastic wave
propagation, structural health monitoring, experimental design and analysis of
the multifunctional elastic/acoustic metamaterials. A M.S. or equivalent degree
in solid mechanics, mechanical engineering, wave propagation, or material
science is needed. Talented applicants with a B.S. degree in the above field

In the developing embryo, tissues differentiate, deform, and move in an
orchestrated manner to generate various biological shapes driven by the complex
interplay between genetic, epigenetic, and environmental factors. Mechanics
plays a key role in regulating and controlling morphogenesis, and quantitative
models help us understand how various mechanical forces combine to shape the
embryo. Models allow for the quantitative, unbiased testing of physical
mechanisms, and when used appropriately, can motivate new
experimentaldirections. This knowledge benefits biomedical researchers who aim
to prevent and treat congenital malformations, as well as engineers working to

Minisymposium proposals for the 12th U.S. National Congress  (USNCCM12)

to be held July 22-25, 2013 in Raleigh, NC are solicited from people

interested in organizing sessions in their area of expertise or interest

and/or wishing to honor particular individual for their sustained

contributions or a special honorary birthday celebration.

The proposal should contain the minisymposium title, a one-page

The result of two workshops on ‘Space - the Final Frontier - What Potential for European Space Policy?’, this special issue of Space Policy gathers a range of papers, many by young researchers, which examines the contribution space policy can make to the European integration process.

To access the Space Issue, go to http://www.journals.elsevier.com/space-policy/journal-news/new-horizons-for-europe/

Some materials exhibits a Brittle/Ductile rupture during a test (ex: traction test) one can notice that by examining the shape of the stress/strain curve, some people try to examine the rupture surface via a microscopic observations, the surface's reliefs can be helpfull to find out the main microscopic mechanisms responsible of the final rupture of the considered material, for those who have a significant experiance in this fiels, what are the most imprtant methods ( or steps to take) used to classify the rupture of a studied material to take into account as a sufficient arguments for this

hi dears

i have som problems in my project that should be simulated  with abaqus .

The
elements contained in element set ErrElemExcessDistortion-Step2 have distorted
excessively.

There
is only one excessively distorted element

The
ratio of deformation speed to wave speed exceeds 1.0000 in at least one
element. This usually indicates an error with the model definition. Additional
diagnostic information may be found in the message file.

Can anyone please tell how do we differentiate between "Crack propogation" and "Fracture initiation". A simple example will be much appreciated!

Hi Everyone.

Can anybody please expalin me what is the meaning of "PIECEWISE" in Ls-Dyna material "MAT_PIECEWISE_LINEAR_PLASTICITY(MAT_24)".

 Thanks in Advance.

hello dear friends,

I am trying to conduct a pushover analysis on a 2D dam model by abaqus.the material is concrete and is modeled by damage plasticity. the problem is because of the softening issue ,while I apply force, the solution would not converge with a low magnitude of load and it remains elastic so I can not obtain a complete pushover curve. I have very little time to get the results so I appreciate anyone who would help.

Thanks 

January 21-23, 2013, Ein Gedi, Israel

Hi everyone,

I want to ask, does anyone know how to design vanes for unsymmetrical elbow? At least can you give me some calculation recommendations to design it? I am doing air simulation inside ductings for my final project. Thanks all

i working on impact, and I should model the penetration in armour, last time i modeled it by LS -DYNA and now I working with abaqus, but it does not have material model for ceramic. accordingly, i should write the VUMAT, but i do not know how I start.

I need some reference for starting to write subroutine. please help me

hello,

I am working on modeling of Continuum damage in isotropic materials. I have written a Matlab code for modeling of a continuous damage and I have verified it with several examples. In this modeling, I have mesh-size independent through the smeared damage model. Now, my aim is to present a continous-discontinous model.

Likun Tan, Amit Acharya and Kaushik Dayal (CMAME, 2013)

Please see the attached file for details.

Kenneth Liechti

AMD Executive Committee

The AMD Executive Committee (EC) is pleased to announce a student travel award and best paper competition at IMECE 2012 (http://www.asmeconferences.org/congress2012/) this year. This award is aimed to encourage younger members and particularly graduate students to participate in IMECE and the activities of the Division.

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