How to export time history temperature result at a node as a csv file in batch in Mechanical?

Rohith Patchigolla

How to export time history temperature result at a node as a csv file in batch in Mechanical?

Rohith Patchigolla

Solution: Use Python Code object (added under Solution) with Target Callback --> "After Post"

The below is the script in Python Code which exports time vs temperature data at a node (provided as an input) and exports this as a csv file in User Files directory of the workbench project.

def after_post(this, solution):# Do not edit this line
    import mech_dpf
    import Ans.DataProcessing as dpf 
    import os
    import wbjn
    mech_dpf.setExtAPI(ExtAPI)

    dpn = wbjn.ExecuteCommand(ExtAPI,"returnValue(a+Parameters.GetActiveDesignPoint().Name)",a="DP")
    projectDir = wbjn.ExecuteCommand(ExtAPI,"returnValue(GetUserFilesDirectory())")

    #Input node number
    nodeId = 10264

    #Get the data source (i.e. result file)
    dataSource = dpf.DataSources(solution.Parent.ResultFileName)

    #Create result operator
    myResName = 'Probe_Temperature'
    myRes = dpf.operators.result.temperature()

    #Get the time data corresponding to result sets
    time_provider = dpf.operators.metadata.time_freq_provider()
    time_provider.inputs.data_sources.Connect(dataSource)
    numSets = time_provider.outputs.time_freq_support.GetData().NumberSets
    timeids = time_provider.outputs.time_freq_support.GetData().TimeFreqs.Data

    result_set_ids = []
    for i in range(numSets):
        result_set_ids.append(i+1)

    #Create time scoping operator
    time_scoping = dpf.Scoping()
    time_scoping.Location = dpf.locations.time_freq_sets
    time_scoping.Ids = result_set_ids

    #Provide Inputs
    myRes.inputs.data_sources.Connect(dataSource)
    myRes.inputs.time_scoping.Connect(time_scoping)

    #Get Outputs
    myRes_fields = myRes.outputs.fields_container.GetData()
    data = []
    #Loop over all available time points to get the displacement at the node
    for i in range(numSets):
        myRes_field = myRes_fields[i]
        data.append(myRes_field.GetEntityDataById(nodeId)[0])

    filePath = os.path.join(projectDir,dpn + '_' + myResName + '.csv')
    if os.path.isfile(filePath):
        os.remove(filePath)
    ctr = 0
    with open(filePath,'w') as f:
        f.write('Time Step,' + myResName + '\n')
        for d in data:
            f.write(str(timeids[ctr]) + ',' + str(d) + '\n')
            ctr+=1