Learning Forum

[mjmiddle]

 

 

 

 

 

Another way is to send commands from workbench that work with the native design point update process. You need to use an ACT extension. The XML can look like this:

<br><extension version=”1″ name=”My Extension”><br>  <script src=”main.py” /><br>  <interface context=”Project”><br>    <images>images</images><br>  </interface><br>  <workflow name=”dp_callbacks” context=”Project” version=”1″>       <!– context must be Project –><br>    <callbacks><br>        <onaftertaskupdate>write_avg_result_data</onaftertaskupdate><br>        <onafterdesignpointchanged>dp_after_change</onafterdesignpointchanged><br>    </callbacks><br>  </workflow><br>  <interface context=”Mechanical”><br>    <images>images</images><br>    <!– empty interface here to allow Python functions in main.py to also be used inside Mechancial –><br>  </interface><br></extension><br>

And the main.py could look like this:

setup_handled = False
def write_my_data(task):
    global setup_handled
    if not task.Name == “Setup”: return
    if setup_handled == True: return    # callback is done many times for each task. Need to block all but one attempt
    dir = GetUserFilesDirectory()
    dir = dir.replace(“\\”,”/”)
    cmdprefix = ”’ExtAPI.ExtensionManager.GetExtensionByName(“My Extension”).ScriptScope.”'
    # when this function is called automatically during DP updates, through workflow callback, Mechanical will not have an extension loaded.
    dp = Parameters.GetActiveDesignPoint()
    for system in GetAllSystems():
        comp = sys.GetComponent(Name=’Setup’)
        cmdMech = cmdprefix + “write_nastran(\”” + dir + “\”,” + dp.Name + “,\”” + comp.DirectoryName + “\”)”
        setup = system.GetContainer(ComponentName=”Setup”)
        setup.Edit(Interactive=False)
        setup.SendCommand(Language=”Python”, Command=cmdMech)
        setup.Exit()
    setup_handled = True

def dp_after_change():
    global setup_handled
    setup_handled = False

def write_nastran(dir, dp, solDir):
    # executed within Mechanical
    import os
    for analysis in ExtAPI.DataModel.Project.Model.Analyses:
        path = analysis.WorkingDir    # solution directory
        d = os.path.dirname(path)
        d2 = os.path.dirname(d)    # need to do dirname() twice since the path ends in a backslash
        sysDir = os.path.basename(d2)
        if solDir == sysDir:
            from Ansys.ACT.Automation.Mechanical import NastranExportOptions
            nas = NastranExportOptions()
            nas.NastranFilename = dir + “/” + “dp” + str(dp) + “_” + solDir + “.txt”
            analysis.ExportNastranFile(nas)
            break