{"id":165056,"date":"2021-12-22T17:03:23","date_gmt":"2021-12-22T17:03:23","guid":{"rendered":"\/forum\/forums\/topic\/imported-pressure-from-external-data-system\/"},"modified":"2023-05-16T18:42:59","modified_gmt":"2023-05-16T18:42:59","slug":"imported-pressure-from-external-data-system","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/imported-pressure-from-external-data-system\/","title":{"rendered":"Imported Pressure from External Data System"},"content":{"rendered":"
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Hello, <\/p>\n

I am working on a Transient Structural simulation and am trying to import a pressure load that varies with position and time from external csv files which are generated by another software program. There is one csv file for each time step, and each csv file contains data for a large mesh of points representing a structural surface. Data for each point is organized in a single row of the csv file in cylindrical coordinates in the format (r position, theta position, z position, corresponding pressure). <\/p>\n

I have set up an External Data system in Workbench and followed all of the steps that I thought were necessary in order to do this (changed coordinates from cartesian to cylindrical, checked units, selected how each column of each csv file will be read into ANSYS, etc…). I have also set the tree objects accordingly in Mechanical (created cylindrical coordinate system, set analysis settings to be defined by substeps which vary with the time, imported pressures for the same time steps with a ramped loading, etc…). <\/p>\n

However, when I try to view the imported pressures by changing the time step via "Active Row" under: Details of "Imported Pressure" –> Graphics Controls –> Active Row, the resulting pressures don't change position. I believe that the magnitudes of the pressures are correct, however, they seem to always stay at the same (r, theta, z) location when the location of the pressure should vary with each time step. <\/p>\n

For example, in the image attached, at active row 270 we should expect that the pressure would appear at a much different z location (where the z coordinate coincides with the length of the cylindrical structure show in in the image). Instead, we see the pressure located at the same z location (as seen in the image) no matter which active row is selected.<\/p>\n

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