how to mesh two sucessive volumes with different meshing

i've modeled a column as a volume

i need a closer or finer mesh near the junction of beam

anyone pls guide me on this issue???

Can anyone send me the paper by P A Cundall and RD Hart.Title of paper is NUMERICAL MODELLING OF
DISCONTINUA.It came in Engineering Computations journal paper (1992).I need it for my research work. thank you. rajeshpnair@gmail.com

You can see practical model of cam follower mechanism for clean energy.
Follower move little bit and help cam to rotate 6 times more peripheral
length. Cam can rotate 360 degree using two followers. You can get full
research at my blog at

http://energyefficientmechanism.blogspot.in/2009/04/mechanism-to-increas...

Special Issue on Instantaneous Angular Speed (IAS) processing and angular applications
For more information, visit the journal homepage:  http://www.journals.elsevier.com/mechanical-systems-and-signal-processing/

Amit Das, Amit Acharya, Johannes Zimmer, Karsten Matthies

A linear (hyperbolic) first-order system has to be solved using Finite Elements.

As I understand usually non-standard discretizations are used in this case (Discontinuous Galerkin for example).

What is the reason for this? Can such an equation be modeled using standard Galerkin methods (say, linear finite elements)? 

Would standard Galerkin discretization cause instability of the solution?

Thanks,

Daniel

Strength of graphenes containing randomly dispersed vacancies

Tserpes, K.I.

Once in a while I have to find the stiffness of a spring that I get from the local hardware shop.  I usually use a formula that can be found in some books on mechanics of materials.

But the assumptions bother me a bit because the springs that I used usually underwent large deformations and I wasn't sure whether the numbers I was using were correct or not.  

To check the formula I compared its predicted k to numbers from Abaqus simulations and found reasonably good results for many situations - but not for soft springs.

I've attached a write-up on that that contains a python script to generate the geometry.  Let me know if you find it useful.

A Special Issue of Engineering Fracture Mechanics

on

"Fracture and contact mechanics for interface problems", edited by Marco Paggi, Alberto Carpinteri and Peter Wriggers has just been published:

http://www.sciencedirect.com/science/journal/00137944/80

The selected articles were presented in a Minisymposium of the IV European Conference on Computational Mechanics, Paris, France, 2010.

List of contents

Far greater voltage-actuated deformation is achievable for a dielectric elastomer under equal-biaxial dead load than under rigid constraint usually employed. Areal strains of 488% are demonstrated. The dead load suppresses electric breakdown, enabling the elastomer to survive the snap-through electromechanical instability. The breakdown voltage is found to increase with the voltage ramp rate. A nonlinear model for viscoelastic dielectric elastomers is developed and shown to be consistent with the experimental observations. 

How reliable is ABAQUS 6.9 in solving STRESS INTENSITY FACTORS for plate with multiple crack

The
aim of this paper is to present a simple but comprehensive model for
the dynamical response of cracked rotor. The mechanical system is made
of two rigid bars connected with a nonlinear spring. The two bars
represent the uncracked parts of the rotor, and, the nonlinear spring
represents the cracked section. The breathing mechanism of the crack is
taken into account by considering special periodic variation of the
global stiffness of the system. The differential equations system is
soled using the harmonic balance method. Some possibilities for early
crack detection are established.

The dielectric constant of elastomeric dielectric material is an
essential physical parameter, whose value may affect the
electromechanical deformation of a dielectric elastomer actuator. Since
the dielectric constant is influenced by several external factors as
reported before, and no certain value has been confirmed to our
knowledge, in the present paper, on the basis of systematical comparison
of recent past literature, we conducted extensive works on the
measurement of dielectric properties of VHB films, involving five
influencing factors: prestretch (both equal and unequal biaxial),
electrical frequency, electrode material, stress relaxation time and
temperature. Experimental results directly show that the dielectric

i'need to  initial geometric imperfection of a localized buckling behavior of unstiffened thin plate will be analyzed. Code Abaqus finite element analysis can be used for this purpose. Since a default is not always in isolation, the interaction between s

Hi, everyone, Is there some methd for the coordinate transform from circle to square.

Thank you for your suggestion.

I'm Modelling a Beam Column Joint in ANSYS.

THe Concrete Element has been Modelled using SOLID 45 element & Steel Rebar using LINK 8 Element

The Volume has been meshed suitably

The rebar (LINK 8) is created in between the nodes, created as a result of meshing Volume.

I would like to know the procedure for copying the same elements (LINK8) at suitable intervals so as to get the desired arrangement of longitudinal reinforcement as in the real beam / column.

If there are two coulpled diffrential equations , say f1(u,e) anf f2(u,e) ?

Now i can solve these either by weak form or minimizing least square form .

Is it possible to solve f1 by least-square and f2 by weak form ? 

Hello everyone;

 I am Msc student and work on simulation of repairing the cracked steel girders using CFRP in abaqus.

I induce a geometrical crack in steel beam model and exepct it propagate in failure strain path, after increasing the load

I  have a question about crack propagation of steel girder under monotonic loading, what criterion of fracture is suitable for this case?