Hi

I am trying to model a rock mass with few discontinuities in ABAQUS. I have to use "joint elements" (Goodman element or the more recent variations) to model the discontinuity. The element should model a separation in tension and a slipping governing by Coulomb friction. Is there any element in ABAQUS capable of modeling such behaviours? If not how can I add one?

Thanks,

Kazem

Dear All,

I am analyzing a steel pressure vessel with autofretage effect in ANSYS. This effect brings the vessel steel fully plastic in the first load step.After the remval of the load in the second step,a permant strain and residual stress remains in the vessel.The residual stress develops compressive stress in the vessel.

To calculate stress intensity factor ANSYS have two option:

1. Plane stress

2. Plane Strain

In a completely 3D problem, How can I use ANSYS to calculate stress intensity factor with out using J integral?

Hi,

I recently started working with piezoelectricity using ANSYS. Can anybody suggest me some tutorials and macros for ANSYS-piezoelectricity.

S. Premkumar

...But I Don't Know What to Do...

 ...So I Leave It Up to You

 by Ten Years After (http://en.wikipedia.org/wiki/Ten_Years_After or on iTunes)

We study the effects of grain boundary adhesion and grain size on the ductility of thin metal films well bonded to polymer substrates, using finite element method. It is shown that the ductility of polymer-supported metal films increases approximately linearly as the grain boundary adhesion increases, and as the grain size decreases. A rule-of-thumb estimate of the ductility of polymer-supported metal films agrees well with the simulation results.

In press, Scripta Materialia, 2008 

The Applied Mechanics Division (AMD) of the American Society of Mechanical Engineers is pleased to announce the winners of the 2008 awards.

i'm try to do a dynamic analysis by abaqus and i faced some problems.any help is appreciated.

The structure is a 3 layers plates,a viscoelastic material sandwich between 2 steels.i modeled the 2 steel as sheel 'S8R"and the rubber as contiuum  "c3d20r",rubber is not thin. Now i don't know how to set the parameters requried by the Code.I hove some parameters abuout the viscoelastic material.,includeing shear storage modulus G(f)=exp(-2.69292)*f^(0.6937),and loss factor of the material L(f)=exp(0.60503)*f^(-0.08807), Possion ratio=0.49, where f is frequency in Hz.

Dear Abaqus Users,First of all, I want to clarify that I am a beginner in Abaqus (only few months) and new in iMechanica. I have been modeling an excavation in Abaqus/CAE. I am using several layers of soils which have been modeled using Mohr-Coulomb model, the wall as an elastic material. Both the wall and the soils were modeled with 2D solid elements (plane strain).I have been facing with lots of problem with the interaction of the first layer and the wall, "UNCONVERGED MOHR-COULOMB PLASTICITY" in the GEOSTATIC STEP!!!!.