Pymapdl composition graded material

[FreidaMing]

I created a geometry and did the mesh printed the element_ids then I assigned the hundreds of materials(with different Elastic Modulus and Poison ratio) to the element_ids, then I gave the boundary conditions. Now I want to export everything especially the information and relationship between element_ids and material_ids to workbench and go on to the topology optimization. Could I transfer all those information to .cdb file and not miss anything in the workbench?

[germa89]

Hi @FreidaMing

If you have elements, materials, etc assigned using MAPDL commands (ET, MAT, SECT, etc) when you export the model as a CDB file, those material, element configurations, sections, etc... will all be saved in that file.

Now, if you have other variables, for instance an array, where you have stored information (for instance, a mapping between elements ID and their percentage of composite material A), then those arrays I'm not sure they are exported. Pinging @mikerife and @mcMunich for infor. I know the CDB does contain some parameters definitions, but I am not sure if all the parameters are stored in the CDB file.

If they are not saved (or even if they are), you could use PARSAV and PARRES to save the parameters to a file, and read it later in workbench using Command snippets object.

[mikerife]

@FreidaMing @germa89
You can double check what the External Model system in Workbench supports with respect to importing MAPDL commands here.
Mike

[FreidaMing]

Hi all, Thanks for looking into this. I appreciate it. I assigned the material-id to element_id as the code screenshot. The excel with the information of material_id and element_id is also attached. I also attached .cdb file. When I open it in workbench, I only find one material in the material list. Even in the report, I did not find any information related to element_ids and material_ids. I am not sure which step is wrong. Could you please give me any ideas? If needed, I will also attach my original code file in the next email. Thanks agian for all your help. best, Yalan 3Dmesh.cdb <https://drive.google.com/file/d/1lZBqvwMq_jhfDxNLOzRyODecVMMm0U84/view?usp=drive_web> [image: image.png] [image: image.png]

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On Mon, Aug 5, 2024 at 8:23 AM Mike Rife ***@***.***> wrote: @ FreidaMing @germa89 You can double check what the External Model system in Workbench supports with respect to importing MAPDL commands here. Mike — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd @FreidaMing <https://urldefense.com/v3/__https://github.com/FreidaMing__;!!KwNVnqRv!CZbjBr2hj6OAAr06_b_U-mA2hlGxzqwCktPTqSz2loUFCB218CCzyegMhMLr5PyCGxys4kwP6fN-Pe0T3nOur-w$> @germa89 <https://urldefense.com/v3/__https://github.com/germa89__;!!KwNVnqRv!CZbjBr2hj6OAAr06_b_U-mA2hlGxzqwCktPTqSz2loUFCB218CCzyegMhMLr5PyCGxys4kwP6fN-Pe0TD6CXUCM$> You can double check what the External Model system in Workbench supports with respect to importing MAPDL commands here <https://urldefense.com/v3/__https://ansyshelp.ansys.com/public/account/secured?returnurl=*Views*Secured*corp*v242*en*wb2_help*wb2h_ModelLoadapp.html__;Ly8vLy8vLw!!KwNVnqRv!CZbjBr2hj6OAAr06_b_U-mA2hlGxzqwCktPTqSz2loUFCB218CCzyegMhMLr5PyCGxys4kwP6fN-Pe0T5X4yt8o$> . Mike — Reply to this email directly, view it on GitHub <https://urldefense.com/v3/__https://github.com/ansys/pymapdl/discussions/3325*discussioncomment-10243312__;Iw!!KwNVnqRv!CZbjBr2hj6OAAr06_b_U-mA2hlGxzqwCktPTqSz2loUFCB218CCzyegMhMLr5PyCGxys4kwP6fN-Pe0TWjpD3Xw$>, or unsubscribe <https://urldefense.com/v3/__https://github.com/notifications/unsubscribe-auth/BFYJOG7IG2VYB5UZMOQWZMDZP54GPAVCNFSM6AAAAABL7Q4GZKVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTAMRUGMZTCMQ__;!!KwNVnqRv!CZbjBr2hj6OAAr06_b_U-mA2hlGxzqwCktPTqSz2loUFCB218CCzyegMhMLr5PyCGxys4kwP6fN-Pe0T1HsuIco$> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[mikerife]

@FreidaMing The screen shots did not make it in your post.

Looking at the model, cdb file, there are two copies of the elements. Did you mean for that? Also the elements are only assigned either material ID 1 or 672. Though there are more material models in the cdb file. Do you mean to do that?

Using External Model to import the cdb file then link over to an WB Mechanical model, with links to the Engineering Data and the Model cells, does result in the proper importing of the model. The colors are going to look odd as there are coincident elements in the model. Hiding the copy of the mesh it does show the same model as in MAPDL.

Mike

[FreidaMing]

Hi Mike, The information you provided is very helpful. I have resolved the issue based on the information you provided. Thank you! 🙏 Best, Yalan

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On Mon, Aug 5, 2024 at 7:46 PM Mike Rife ***@***.***> wrote: @ FreidaMing The screen shots did not make it in your post. Looking at the model, cdb file, there are two copies of the elements. Did you mean for that? Also the elements are only assigned either material ID 1 or 672. Though there are more material ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd @FreidaMing <https://urldefense.com/v3/__https://github.com/FreidaMing__;!!KwNVnqRv!A5v7RgKZ9l_5v29O1MCKV_cqbFuVy2QuVOhQQmto5pcqiaahYA_Fdr1eUcAfeY7jBphH6JaXavxwHGTJDW6kTTk$> The screen shots did not make it in your post. Looking at the model, cdb file, there are two copies of the elements. Did you mean for that? Also the elements are only assigned either material ID 1 or 672. Though there are more material models in the cdb file. Do you mean to do that? Using External Model to import the cdb file then link over to an WB Mechanical model, with links to the Engineering Data and the Model cells, does result in the proper importing of the model. The colors are going to look odd as there are coincident elements in the model. Hiding the copy of the mesh it does show the same model as in MAPDL. Mike — Reply to this email directly, view it on GitHub <https://urldefense.com/v3/__https://github.com/ansys/pymapdl/discussions/3325*discussioncomment-10248129__;Iw!!KwNVnqRv!A5v7RgKZ9l_5v29O1MCKV_cqbFuVy2QuVOhQQmto5pcqiaahYA_Fdr1eUcAfeY7jBphH6JaXavxwHGTJG9Z_G2I$>, or unsubscribe <https://urldefense.com/v3/__https://github.com/notifications/unsubscribe-auth/BFYJOG2LKQLMCCBVDJ3PZVLZQAMGNAVCNFSM6AAAAABL7Q4GZKVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTAMRUHAYTEOI__;!!KwNVnqRv!A5v7RgKZ9l_5v29O1MCKV_cqbFuVy2QuVOhQQmto5pcqiaahYA_Fdr1eUcAfeY7jBphH6JaXavxwHGTJxRFeQ8M$> . You are receiving this because you were mentioned.Message ID: ***@***.***>