Ask iMechanica

I would like to know a suitable way to generate meshs for fractal surfaces and export them to be used in FEM computations.

Thank you for any help.

Hi, I am new to ABAQUS. I want to simulate the fracture toughness test to predict the behaviour of materials(brittle/ductile). Please help me how can I proceed?

If possible give me some guidelines and if you have any documents regarding this topic kindly send it to: sufian.ulsan [at] gmail.com

Thanks in advance for your valuable suggession.

Dear All,

I have problem, If I try to write to the ABAQUS COMMAND:

abaqus job=beam

then ABAQUS COMMNAD respond

input file      :

and I do not know what to do...

I know that it's a simple problem but I need it to solve..

thank you for early response

Best regard

alexander23

Dear all,

My problem:

 dear all, 

How can I model the changing
relationship of shear modulus with frequency for a passive constrained viscoelastic
damper used as part of a composite  sandwich beam which is subject to a walking
excitation using ANSYS ??

Hello to Everyone,

While Running the Job in abaqus Am getting an Statement of "Disconnecting from Licence manager" in DOS window ..But status of the job is still Running and also it is taking long time for Running the job...

Is this Beacause of the statement in DOS window job is taking  long time to Run..?

My Question is How can i avoid this and Why it will show the statement like this please give the suggestion on the same..

Hi Every Body 

I am trying to simulate compression test for an aluminum foam.

At first,I modeled a unit cell to create my final shape by repeating method(copy cell side to side).

Then I merged these cells to reach a unified shape.

As compression test is a quasi-static process,I try to run it by a dynamic explicit in Abaqus.

But it takes too much time so that each step time is less than 10^-5 for simple model and explicit analysis may take 4-5 days 

I modeled a 3D truss; About joint
defining: for joints that more than 2 beams element connect in them, is this
way correct to define pin connection between them?

If there are 3 beam element: 1, 2, 3

I defined first MPC constraint (pin)>
control point: from beam 1, and slave point: from beam 2

And for second constraint>
control point: from beam 2, and slave point: from beam 3

Is this definition result mean that
beam 1 and 3 are pin at that joint?

Normal
0

Hello friends!

I submitted my model’s job in
abaqus, it completed successfully without any warning and error, but in
visualization modulus there is no stress in elements, so what is the
problem?