mmalekan's blog

Dear colleagues,

I wonder to know what topics are still under development using phase field (PF) modeling?

The PF has already applied to 2D, 3D, and shell structures, incorporating homogeneous, inhomogeneous, and heterogeneous materials. It also applied to brittle, ductile, dynamic, cohesive, finite deformation, and multi-field fractures. What else we can model using PF method?

Regards,

Malekan

Dear All,

I wonder to know what could be a challenging issue for renewable energy structural design, from solid mechanics point of view? Is there any major problem with structural design and analysis of the renewable energy structures?

Regards,

Dear All,

Dear all,

I need to calculate SIF through a FEM program by writing some line of codes. The problem is that I wasn't able to find a reference contains straightforward formulation and procedure for this. Can anybody help me please with this issue?

Cordially,

Mohammad

Dear All:

I want to update some nodal values of an existing Abaqus odb file using pyhton script. The problem is I don't know what kind of commands should I use in order to do this task?

Another question is how to delete an existing FieldOutput variable from odb file. I know by using add "addData" command, we can add user-defined field to the odb file, but how to delete an existing field output?

Thanks for your help,

Malekan

Dear All:

I want to extract stiffness matrix from my model. For this, I added these lines to my input file:

*STEP, name=exportmatrix

Dear all:

Is it possible to run Abaqus from a Java code? or is there any communication way between Abaqus and Java?

I want to simulate a simple problem and pass some info from Abaqus to Java code and vice versa.

Thanks,

M. Malekan

Dear All,

I want to change material properties (E, Nu, and alpha) through
thickness of a cylinder. How can I model this problem in Abaqus? there
is only conventional material which are homogenous in abaqus, but there
is must be a way to solve my problem. Is there anyone to help me on this
problem?

Thanks,

Dear All,

I want to model crack growth in a plate using ABAQUS XFEM method. Here is
my question about it: How to calculate Stress intensity factor in XFEM
when crack growth in ON?

At this time, when I using ABAQUS XFEM with allowing for crack growth and request for SIF through History output request,
It says that SIF could not be produced when crack growth in XFEM is ON.

Best,

Mohammad

Hi,

I have problem with using field variable in Abaqus. I was Abaqus/CAE to model my problem, but when I add field variable option in Input file, I got this error:

in keyword *FIELD, file "Job-21.inp", line 14857: Unknown assembly node set PART-1-2

in keyword *FIELD, file "Job-21.inp", line 14887: Unknown assembly node set PART-1-2

A          value has been specified on node set assembly_part-1-2. This node set is not active in the model

Hi Everyone,

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I was apply Field Variables to change material properties in simulation, but I got this error:

in keyword *FIELD, file "Job-2-Copy.inp", line 5575: Unknown assembly node set _Pickedset2

Hi everyone,

I'm M.Sc. student of mechanical eng. I was modeled crack in a cylinder
with X-FEM method in Abaqus software, but I have some problems:

1- when I want to see crack propagation in results, although some of
elements are failed (according to STATUSXFEM contour), but I can not see
crack propagation in model. What items must be activated for this
purpose?

Hi Everyone,

I must doing a project for fracture mechanics course. I'm so confused for this. Can anybody  help me?

Thanks.

M. Malekan

Hi Everyone,

 I'm a M.Sc. student of mechanical engineering. my thesis is fatigue crack closure simulation with interface element. I don't know how start with interface (cohesive) element. I need some fundamental text on interface element.

If anybody knows about these topics, I would appreciate for helping me.

Most thanks.

M. Malekan