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2D modelling of laser welding

while carrying out a simple 2D analysis of welding of butt joint considering the source of constant heat flux and applying it at certain nodes as constant heat flux, i encountered a problem that it says that the temperature at particular node is exceeding the pre set limit and no solution is obtained. I am a freshman in Ansys so any help in this regard will be helpful

Jonathan Zimmerman's picture

Submit an abstract for IMECE-2012 sympoisum "Multiscale Perspectives on Plasticity in Metals"

My co-organizers and I invite you to submit an abstract to the upcoming symposium “Multiscale Perspectives on Plasticity in Metals” at the ASME 2012 International Mechanical Engineering Congress & Exposition (IMECE), to be held November 9-15, 2012 in Houston, Texas. This symposium will explore the unique challenges to understanding plastic deformation in metals and formulating material models that can accurately predict thermo-mechanical deformation.

2012 SIMULIA Community Conference - International Gathering of Simulation Experts

2012 SIMULIA Community Conference
May 15-17, 2012 – Providence, Rhode Island

Join our international gathering of simulation experts

PhD Studentship at Simon Fraser University Fuel Cell Lab

PhD and Master's Studentships
Fuel Cell Modeling and Experimentation
Simon Fraser University Fuel Cell Laboratory
Vancouver, Canada
Starting Date: January 1, 2012

Post-Doctoral Fellowship at Simon Fraser University Fuel Cell Lab

Post-Doctoral Fellow Position
Microstructural Modeling of PEM Fuel Cell Materials
Simon Fraser University Fuel Cell Laboratory
Vancouver, Canada
Starting Date: December 1, 2011

Check out our latest issue of SIMULIA Realistic Simulation News!

From spacecrafts to army helmets, the latest issue of SIMULIA Realistic Simulation News delivers customer success stories and industry strategy focused on Aerospace and Defense. 

Our feature article is an exciting and in-depth report on Dutch Space’s application of Abaqus in literal rocket science: virtual testing of a new metallic thermal protection system for hypersonic space vehicles.

Also in this issue:

Designing Safer Vehicles with Realistic Simulation of Airbag Deployment

Airbags are one of the major protection systems used in a car crash. They play one of the most important roles in preventing severe injuries and fatalities during vehicle crashes. The advancement of new technology and airbag regulations necessitates that airbags be tested for safety in all kinds of scenarios, including situations where the occupant interacts with the airbag before it is fully deployed.

Markus J. Buehler's picture

Post-­‐doctoral research fellowship: Molecular mechanics of bone

Top candidates are sought for a collaborative research project between Dr. Sandra Shefelbine (Department of Bioengineering, Imperial College London) and Dr. Markus Buehler (Department of Civil and Environmental Engineering, Massachusetts Institute of Technology).  This project will use molecular modelling techniques and associated experimental methods to explore the collagen-apatite interface in bone. 

Stress Field near a crack tip with different crack fibre orientations of an orthotropic lamina

I was going through these papers:

1.P.K. Sarkar and S.K. Maiti, 'Prediction of mode-1 fracture toughness of unidirectional fibre composites with arbitrary crack fibre orientation from its lowest or matrix fracture toughness'. int. J. Fracture, vol. 40. pp. R91-R96, (1989).

 

2.S.K. Maiti and P.K. Sarkar, 'A method of calculation of total strain energy release rate and its layer-wise distribution for an arbitrary through the thickness crack extension in a composite laminate', Engg. Fracture Mechanics, vol. 36, pp. 639-646,(1990).

 

 

Postdoc position available on atomistic simulations of water/graphene interface

A postdoc position is available next January at Research Center for Applied Sciences, Academia Sinica in Taiwan on the molecular simulation of the water/graphene interface.

For those who are interested, please contact Chun-Wei Pao (cwpao@gate.sinica.edu.tw) or Jer-Lai Kuo (jlkuo@pubs.iams.sinica.edu.tw).

 

composite slab

I am going to study the diaphragm behaviour of the composite slab under the lateral loading.

To simulate the system using FEM package (such as ANSYS or ABAQUS). the obtained results from FEM package would then be verified by experimental results that must be done by myself.

 

deformable bodies

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Applications of deformable bodies and their simulations?

Hao Meng's picture

Mechanics of porous material

Hi all,

I am going simulate a plate of porous material (SiC) to evaluate its strengh.

Would someone share some knowledge on the mechanics of the porous materials.

Thanks.

 /Hao

A question on UMAT implementation of non-local theory

 

Hi, friends,

Now, I am implementing the non-local continuum theory in ABAQUS through UMAT programming.

Unfortunately, I have been obstacled by the following question:

On one hand, in non-local continuum theory, the non-local strain of every particular integration point is determined by the global strain field all over the specimen.

looking for heat engine simulation software

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Hi!

I am wondering if anyone here knows of a generic heat engine simulator. I.e. something that can simulate the behavior of reciprocating engines, Stirling engines, and so forth.

The outputs I'm interested in include things like power and efficiency. The input variables that I would play around with include engine dimensions and material properties.

Tensile coupon test - simulation of tensile coupons (after necking)

I have carried out several coupon tests (rectangular coupons similar to
those of ASTM E8). Some of these tests have kind of weird behavior. The
problem arises when I simulate results with ABAQUS. It goes pretty well
until a few steps after necking. Test and ABAQUS results match exactly
until several steps before fracture. After this point, there is a
discrepancy between results and my attempts in capturing the observed
behavior was unsuccessful. (around 10% or more plastic strain).
The

UK Newton Post-Doc Fellowship in Computational Mechanics

 
Dear All,

A new multi-million pound initiative to fund research collaborations and improve links between UK and overseas researchers has been launched.

The Newton International Fellowships aim to attract the most promising, early stage, post-doctoral researchers working overseas, who do not hold UK citizenship, in the fields of humanities, engineering, natural
and social sciences.

NAFEMS NA 2008 Regional Summit: NAFEMS 2020 Vision of Engineering Analysis and Simulation (Hampton, VA - Oct. 29-31, 2008)

Hi everyone,

I just wanted to let everyone know about the upcoming NAFEMS North American 2008 Regional Summit: NAFEMS 2020 Vision of Engineering Analysis and Simulation. This is an excellent opportunity for academic researchers, industrial practitioners and software developers to meet for mutual benefit.

For those of who you not familiar with NAFEMS, it is a non-profit, vendor neutral, engineering analyis community.

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

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).

jcliao's picture

Call for Papers: Multiscale Modeling and Simulation: from Molecules to Cells to Organisms

Dear Colleague,

We want to draw your attention to and encourage your participation in a special session on Multiscale Modeling and Simulation of the thirteenth Pacific Symposium on Biocomputing (PSB), to be held January 4-8, 2008, on the Big Island of Hawaii. PSB is an international, multidisciplinary conference with high impact on the theory and application of computational methods in problems of biological significance. 

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