Sponsored by the National Science Foundation and the NSF Institute for Mathematics and its Applications, the University of Minnesota (Minneapolis, Minnesota, USA) is hosting a workshop on the boundary element method (BEM) April 23-26, 2012. This workshop consists of a two-day short course and a two-day colloquium on advances in the BEM with educational and industrial applications. Researchers and engineers from around the world, as well as students (both graduate and undergraduate) are invited to participate in this workshop.

i want to procedure for "how to make a ANSYS model? "

Further details:

   Tensile test

     Material: Carbon Epoxy 

     Software package: ANSYS v11.0

     Speccimen size: L=250 mm

Hi everybody,

 Can any one explain what is the physical meaning that a stiffness matrix illustrate ? I am a learner at a starting level in this Finite Element Analysis field . There are some questions which I wish to get an idea upon ...

 1. What exactly Stiffness Matrix tells about the structure ? Can you please explain with an example like "Linear Timoshenko Beam or Bernoulli beam or like 4-node plane stress element"....

 2. What is the relation between the eigen values of a stiffness matrix and the corresponding rigid body modes ? 

For those who may be interested,

 I have put together a paper describing 1D plasticity for a variety of cases of isotropic hardening.  The material is not new, but hopefully it is written with enough detail that it will help beginners learn some basics of computational plasticity.  The notation and material closely follows "Computational Inelasticity" written by Simo and Hughes.

I'm looking for a PhD student to work in the area of solid mechanics, specifically applied mathematics in linear elasticity using complex variable methods and/or boundary integral equation methods.

I'm a professor in Department of Mechanical Engineering at the University of Alberta in Edmonton, Alberta, Canada (although I am an applied mathematician by training).

You can find out more at:  www.mece.ualberta.ca/~schiavone/schiavon.htm

Please E-mail me at: P.Schiavone@ualberta.ca, if interested.

Attached is an intriguing commentary on the scientific method through an example, written by my good friend, Luc Tartar. The specific example is that of trying to understand what 'light' might be, especially from a mathematician's point of view. The mathematician in this case is an extremely talented one, who also happens to actually understand a whole lot of physics and mechanics.

I am posting it especially for our younger members on imechanica, since I think there are interesting things to learn here. If you are an engineer or a physicist, it will not necessarily be a comfortable read, both on matters technical and philosophical. But my personal point of view is that not everything worth learning has to be within one's comfort zone. Being open-minded about learning, and recognizing when there is something to be learnt, is one of the best habits we can develop. One does not have to agree with all that is said, but the greatest intellectual progress happens when a collection of sincere, talented people operate at the boundary of their individual comfort zones - not necessarily agreeing, but definitely learning from each other.

So, enjoy!

For an interesting news article about the mechanics behind Lego Man's balloon voyage to space, read the Toronto Star article by Mary Ormsby. She writes, "A 1,200-gram weather balloon, the crucial role of gravity, quiver-reducing ropes, Styrofoam’s versatility, burst altitude, a University of Wyoming website and a free software program for shutterbugs were part of the formula Mathew Ho and Asad Muhammad, both 17, used to launch, film and land the patriotic, flag-bearing Lego Man..."

Hi

how can i set failure criteria for composites when doing there impact test in ansys LS-DYNA

Many people puzzle over the nomenclature of the pure shear test. They rightly point out that 1) the Pure Shear test piece is loaded in tension by extending the specimen in the axial direction, and 2) a shearing deformation, by definition, involves the lateral motion of parallel planes. They wonder where is the "shear"? and what does it mean to say that the shear is "pure"?  Here, we review the origins of the terminology. 

I read in the Abaqus documentation that a Coupling Constraint couples the motion of a surface to the motion of a single point.  I am modeling 1/8 of a square bar using symmetry wrt 3 planes at the origin (0,0,0). The free end of the bar is a surface perpendiclar to the X global axis. I define a ref point at (L,0,0,) where L is the length of the bar. Then I use the coupling constraint to `couple' the dof U1 at the surface at X=L to the ref point. I apply a single load CF1 at the ref point. The surface should move along X without rotating. It rotates !!! What have I done wrong ???

Can anyone help me out to resolve DMAP Fatal Message 9061(IFPL) - the version requested on the restart FMS statement is not valid for restart purposes. subsequent restarts should reference a prior valid version.

What this error and why it is happening?

Thanks in Advance

Nagaraja N

It seems that it will be useful for college students training:
http://www.orlovsoft.com/mmsamples/mmpage02.htm

How to calculate the impact force at the time of impact for charpy impact test method

I am getting started with ABAQUS, and so far, I have had to assign a section property to every part of the assembly, which takes a long time for large assemblies. Often the entire assembly has the same section assignment. Is there a way to assign the same section to various instances?

I thank you all in advance.

I've recently had the opportunity to take another look at plasticity in the large deformation context.  I've avoided going into geometric and other issues involved with multiplicative deformations (points stressed in earlier blog posts by Giovanni (http://imechanica.org/node/11545), Arash (http://imechanica.org/node/11623)  and Xiabo (http://imechanica.org/node/11599).  Attached are some old notes that I'd prepared some years ago to help me with the details.  I hope they're of use to other students of mechanics.

-- Biswajit

Dear Colleagues,