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Dear All:

Here I have a question about the physical meaning or the numerical effect of the parameter, r, in the exponential cohesive zone model. In the original papers by Xu and Needleman, the parameter, r, was defined as "r=Δ*/δn, where the Δ* is the value of the normal displacement jump after the complete tangential separation occurs under the condition of nomal traction being zero, and δn is the normal interface characteristic length parameter".

Is there a way to include Feature (eg wires) in a part merger in the Abaqus CAE assembly module.

I am trying to model a repetitive space space grid and would like to define pin connections between beams in a part which can then be arrayed, leaving only connections between arrayed parts to be defined.

dear friends

can you explain "hourglassing" and "ale" exactly?

Is there a way to define a materials damping properties in Abaqus FEA if all I know is the tan delta value? Please let me know. Thanks.  

  In abaqus/CAE how to know first cracked element in concrete?

Hi,

In have modelled a beam with a hole using LEFM and FEM, assuming a crack length, I was able to indicate the failure load of the beam with a hole. Now, I would like to find a diameter of the hole which I can claim that in this diameter, there is no effect of the hole on the total strength of the beam. Would you please give me an idea of what to do? Is there any thing that I can do withmy model to find out about this? Is there a lower band in LEFM to limit its using?

Thank you,

Hey All.

I' m M.S of petroleum engineering.

i want to simulate the cracks interactions(a propagating crack and a pre-existing crack).

But the XFEM in ABAQUS has some limitations that doesn't let me do such simulation!

I'd like to know if anyone knows any kind of subroutines(i.e cracks interactions or crack propagation related subroutines) for this kind of simulation.

Besides,that would be my pleasure to know any suggestion,idea or guidlines for my problem.

Regards.

i want assign a semirigid connection in steel frame .....can somebody tell me how to assign it....?