{"id":382297,"date":"2024-09-11T11:33:54","date_gmt":"2024-09-11T11:33:54","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problems-with-cdb-file-from-mapdl-to-workbench-and-pressure-mapping\/"},"modified":"2024-09-11T11:33:54","modified_gmt":"2024-09-11T11:33:54","slug":"problems-with-cdb-file-from-mapdl-to-workbench-and-pressure-mapping","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problems-with-cdb-file-from-mapdl-to-workbench-and-pressure-mapping\/","title":{"rendered":"Problems with CDB file from MAPDL to Workbench and Pressure Mapping"},"content":{"rendered":"<p>&lt;p&gt;I am developing a workflow for conducting Fluid-Structure Interaction (FSI) simulations of wind and tidal rotors using Ansys and OpenFOAM software. Currently, I am using the IEA 15 MW reference wind turbine. I have extracted the aerodynamic loads on the blade from a 3D blade-resolved simulation run in OpenFOAM. Now, I am setting up a 3D FEM simulation of this blade and intend to use the aerodynamic loads as boundary conditions in my FEM simulation. Previously, I have worked with Ansys Mechanical and applied loads using the External Pressure Boundary Condition to map aerodynamic pressure to the FEM blade.&lt;br&gt;&lt;br&gt;However, I am now attempting to use MAPDL to recreate a similar setup. This is because I am using the UTD IEA 15 MW reference structural blade from this repository: https:\/\/github.com\/UTDGriffithLab\/UTD-IEA15MWBlade. From the repository, I have a .src file for use in MAPDL for my FEM simulations. Initially, I tried to open the file in Ansys Mechanical, as I have more experience with it, converting my case to CDB file following this guideline: https:\/\/simutechgroup.com\/post-processing-apdl-models-inside-ansys-workbench\/. However, I encountered two issues:&lt;br&gt;&lt;br&gt;- The material properties are not correctly transferred. The material is defined in the CDB file, but when I open the model in Ansys Mechanical, the plies of the composite blade are created without any material assigned to them. Manually assigning materials is unfeasible due to the number of plies.&lt;br&gt;&lt;br&gt;- The initial .src file contains the mesh of the blade. While I can see the mesh in Ansys Mechanical, I cannot modify it, preventing me from creating my own mesh for my study. Ideally, I would like to export only the geometry with the composite plies and correct material definition, so that I can create my own mesh for my study.&lt;br&gt;&lt;br&gt;My first question is: Is there a solution to these problems?&nbsp; For your information, I am using Ansys 2021R2 on a Linux Centos 8 platform. I read that materials can be exported from MAPDL to Engineering Data in Workbench using a CDB file, however I cannot connect the External Model with CDB to Engineering Data in my case. Is this a specific problem with Ansys on Linux? Is there a workaround? Moreover, I have tried to use MAPDL Commands in Ansys Mechanical to define the materials and assign them to the composite plies, but again this does not seem to work.&lt;br&gt;&lt;br&gt;If there is no solution to these problems, could I get some guidance on MAPDL? I have opened the .src file in MAPDL and am trying to set up my case by importing my aerodynamic pressure as a table. My loads file has six columns: the first three refer to the pressure in the x, y, and z directions (normal pressure + wall shear stresses), and the last three refer to the x, y, z locations of the cell center of the CFD cell where the specific pressure is applied. I have read my file and stored the pressures and cell center locations in two different arrays in MAPDL. I now want to apply that pressure to the specific locations given by my CFD mesh. Since the CFD mesh and the FEM mesh do not coincide (I am using the FEM mesh initially present in the reference .src file), I am unsure whether I can apply pressure with three components to a location that does not coincide with a node of the FEM mesh. Is there something similar to the External Pressure BC in MAPDL?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-382297","topic","type-topic","status-publish","hentry","topic-tag-AnsysMechanical2021R2-1","topic-tag-ansys-mechanical-apdl"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["454088","170445"],"_bbp_author_ip":["163.1.223.176"],"_btv_view_count":["1037"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["382297"],"_bbp_forum_id":["27796"],"_bbp_engagement":["170445","454088"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["387500"],"_bbp_last_active_id":["387500"],"_bbp_last_active_time":["2024-09-30 10:38:47"]},"test":"9b59aa2aeb38fb9ae5d67e1a162c372c6b38176b"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382297\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=382297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}