Data analysis-elastic properties computational

[louisepb]

Hi,

You shouldn't need to do this by hand in Abaqus. If you follow the steps described here: http://texgen.sourceforge.net/index.php ... and_Abaqus then this is all done for you. If you look in the .inp produced by TexGen you will see that it applies all of the equations for the boundary conditions described in Li's paper are included in the file, as are the steps which apply the loads. If you run the simulation and then use the scripts provided with TexGen to extract the values from the odb file and calculate the material properties then you shouldn't need to set any parameters in Abaqus.

In my earlier reply which asked you to send the script it was the effectiveMatPropRVE.py script that I was referring to which is short and should be fine to upload.

I would prefer to keep the conversation on the forum if possible as that means that other people can benefit and possibly contribute as well.

Best regards,
Louise

[duc hai]

hi,
where x=0,y=1..., I can't find it where is it. I do follow the steps described here http://texgen.sourceforge.net/index.php ... and_Abaqus but can't run this file apload this attachment.
I hope you can help me more and more.
thanks

[duc hai]

hi,
I saw many person ask but thay are same me, can not do it. If you can do a video for this problem and upload links in this forum. It is good way for help them and me.
thanks

[louisepb]

Hi,

I think you will find that the others who have asked questions about this have managed to run successful simulations. The instructions on the tutorial are quite explicit. As I said in my earlier reply, your problem seems to be that you are using an old version of the Python script but you haven't sent the code that you are using for me to check.

I'm afraid that at the moment I don't have time to create a video and I'm not sure that it would show anything that isn't already explained in the tutorial.

Sorry that this doesn't appear to help much. If you send exact details about what you're doing and where it fails then I will try and help.

Best regards,
Louise

[duc hai]

thanks for your help,
this is code I use for this problem.
I hope you can help me

[louisepb]

Hi,

You seem to be using an old version of these scripts. As the error that you posted suggested, the effectiveMatPropRVE script tries to use a variable ContinuumModel which has not been specified.

You could either update to the most recent version of TexGen or just download up-to-date versions of these files from GitHub here: https://github.com/louisepb/TexGen/tree ... Python/Lib

Hope that helps,
Louise

[duc hai]

hi,
Thanks for your helpful help, I very happy, I have done it successfully but currently there are two problems posed.
the fist: results have mistake show in this picture attachment.
the second: The result is not correct, I compare with the paper So when make model in Texgen and then export to Abaqus Do need to change any parameters? and the Boundary condition?
thanks so much

[louisepb]

Hi,
I don't know what is causing the error you show. I think you will have to examine your model and see if you can identify the cause of the error.

If the results are not as expected then I suggest that you check that you have set up the material properties correctly and that your model accurately represents your textile. The boundary conditions should not need changing, they should be set up correctly.

Hope that helps,
Louise

[duc hai]

hi,
thanks for your helpful, befor I have saw dyeyanie ask this problem, but It was not resolved thoroughly. I have checked my model, it is corrected. I will double check, if not correct, I hope you can help me check it.
thanks so much

[duc hai]

hi,
I double try do again, but I don't know where is the mistakes. this is the model and the materials, could you see correct or mistake?
thanks so much

[louisepb]

Hi,

Your model looks fine but it is not possible to comment on results from the information that you provide. I assume that the material properties that you give are for the fibres. There doesn't seem to be any matrix data.

Are you a student? Is there someone at your institution who could help you to understand your simulation results?

Best regards,
Louise

[duc hai]

hi,
I'm trying to simulate this problem.
http://www.sciencedirect.com/science/ar ... 5813020456
I have matrix material, I have read more and more, but I don't know where is the misktake.
Haven't got someone at my institution could help me to understand my simulation results.
if you can help me check it I very very hapy, if you don't want add email in this forum, you can send to my email: shipbuilding_dta10@yahoo.com.
I promised error issues when you help me fix, I will put those errors on the forum for everyone to consult.
thanks for your help

[duc hai]

hi,
this is my links my model, you help me repair it.
http://upfile.vn/xwGm7qjmNCBC
thanks

[louisepb]

Hi,

You don't seem to have assigned any material properties in your TexGen model. You need to do this as described here http://texgen.sourceforge.net/index.php ... Properties . If these aren't assigned then you will have incorrect material properties in your .inp file and your simulation will not be correct.

From your Abaqus file it appears that there are only 5 voxels in the z-direction. I would guess that this is not sufficient to capture the geometry accurately enough. Does the paper that you are trying to replicate give the number of voxel used in x, y and z-directions? This could affect the results if you haven't done a sensitivity study to make sure that you are using an appropriate mesh density.

Hope that helps,
Louise

[duc hai]

hi,
thank you for the good help, I followed the steps as your advice, But I have not been successful yet.
Maybe there is something wrong in my file, you can use abaqus and texgen help me check it? this links
http://upfile.vn/7kBmFVZCNqGQ
If you can help me make a correct file .inp follow the paper, I will Find out the difference. I am really sorry for trying but not successful.
thank again for your help.