Note
Go to the end to download the full example code.
Remote & Embedding Example#
This code, which uses the same example, first demonstrates how to use a remote session and then demonstrates how to use an embedding instance.
Remote Session#
Download required files#
Download the required files. Print the file paths for the geometry file and script file.
import os
from ansys.mechanical.core import launch_mechanical
from ansys.mechanical.core.examples import download_file
geometry_path = download_file("Valve.pmdb", "pymechanical", "embedding")
print(f"Downloaded the geometry file to: {geometry_path}")
script_file_path = download_file("remote_script.py", "pymechanical", "embedding")
print(f"Downloaded the script file to: {script_file_path}")
Downloaded the geometry file to: /github/home/.local/share/ansys_mechanical_core/examples/Valve.pmdb
Downloaded the script file to: /github/home/.local/share/ansys_mechanical_core/examples/remote_script.py
Launch Mechanical#
Launch a new Mechanical session in batch, setting cleanup_on_exit to
False. To close this Mechanical session when finished, this example
must call the mechanical.exit() method.
import os
from ansys.mechanical.core import launch_mechanical
# Launch mechanical
mechanical = launch_mechanical(batch=True, loglevel="DEBUG")
print(mechanical)
Ansys Mechanical [Ansys Mechanical Enterprise]
Product Version:242
Software build date: 06/03/2024 09:35:09
Initialize variable for workflow#
Set the part_file_path variable on the server for later use.
Make this variable compatible for Windows, Linux, and Docker containers.
project_directory = mechanical.project_directory
print(f"project directory = {project_directory}")
# Upload the file to the project directory.
mechanical.upload(file_name=geometry_path, file_location_destination=project_directory)
# Build the path relative to project directory.
base_name = os.path.basename(geometry_path)
combined_path = os.path.join(project_directory, base_name)
part_file_path = combined_path.replace("\\", "\\\\")
mechanical.run_python_script(f"part_file_path='{part_file_path}'")
# Verify the path
result = mechanical.run_python_script("part_file_path")
print(f"part_file_path on server: {result}")
project directory = /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/
Uploading Valve.pmdb to dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/.: 0%| | 0.00/774k [00:00<?, ?B/s]
Uploading Valve.pmdb to dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/.: 100%|██████████| 774k/774k [00:00<00:00, 288MB/s]
part_file_path on server: /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/Valve.pmdb
Run mechanical automation script#
Run remote_script.py in the mechanical remote session.
mechanical.run_python_script_from_file(script_file_path)
''
Get list of generated files#
list_files = mechanical.list_files()
for file in list_files:
print(file)
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file.mechdb
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/.mech_lock
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/solve.out
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/MatML.xml
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/CAERepOutput.xml
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/ds.dat
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/CAERep.xml
/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/file0.err
Write the file contents to console#
Download files back to local working directory#
dest_dir = "download"
dest_dir = os.path.join(os.getcwd(), dest_dir)
for file in list_files:
downloaded = mechanical.download(file, target_dir=dest_dir)
if file.endswith(".out"):
print("contents of ", downloaded, " : ")
write_file_contents_to_console(downloaded[0], number_lines=-1)
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file.mechdb to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/file.mechdb: 0%| | 0.00/6.81M [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file.mechdb to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/file.mechdb: 100%|██████████| 6.81M/6.81M [00:00<00:00, 373MB/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/.mech_lock to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/.mech_lock: 0%| | 0.00/17.0 [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/.mech_lock to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/.mech_lock: 100%|██████████| 17.0/17.0 [00:00<00:00, 1.35kB/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/solve.out to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/solve.out: 0%| | 0.00/10.6k [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/solve.out to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/solve.out: 100%|██████████| 10.6k/10.6k [00:00<00:00, 64.7MB/s]
contents of ['/__w/pymechanical/pymechanical/examples/embedding_n_remote/download/solve.out'] :
Ansys Mechanical Enterprise
*------------------------------------------------------------------*
| |
| W E L C O M E T O T H E A N S Y S (R) P R O G R A M |
| |
*------------------------------------------------------------------*
***************************************************************
* ANSYS MAPDL 2024 R2 LEGAL NOTICES *
***************************************************************
* *
* Copyright 1971-2024 Ansys, Inc. All rights reserved. *
* Unauthorized use, distribution or duplication is *
* prohibited. *
* *
* Ansys is a registered trademark of Ansys, Inc. or its *
* subsidiaries in the United States or other countries. *
* See the Ansys, Inc. online documentation or the Ansys, Inc. *
* documentation CD or online help for the complete Legal *
* Notice. *
* *
***************************************************************
* *
* THIS ANSYS SOFTWARE PRODUCT AND PROGRAM DOCUMENTATION *
* INCLUDE TRADE SECRETS AND CONFIDENTIAL AND PROPRIETARY *
* PRODUCTS OF ANSYS, INC., ITS SUBSIDIARIES, OR LICENSORS. *
* The software products and documentation are furnished by *
* Ansys, Inc. or its subsidiaries under a software license *
* agreement that contains provisions concerning *
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* compliance with exporting laws, warranties, disclaimers, *
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* ISO 9001:2015 company. *
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***************************************************************
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* This product is subject to U.S. laws governing export and *
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* software license agreement and FAR 12.212 (for non-DOD *
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***************************************************************
*------------------------------------------------------------------*
| Ansys Product Improvement |
| |
| Ansys Product Improvement Program helps improve Ansys |
| products. Participating in this program is like filling out a |
| survey. Without interrupting your work, the software reports |
| anonymous usage information such as errors, machine and |
| solver statistics, features used, etc. to Ansys. We never |
| use the data to identify or contact you. |
| The data does NOT contain: |
| - Any personally identifiable information including names, |
| IP addresses, file names, part names, etc. |
| - Any information about your geometry or design specific |
| inputs. |
| You can stop participation at any time. To change your |
| selection go to Help >> Ansys Product Improvement Program |
| in the GUI. |
| For more information about the Ansys Privacy Policy, please |
| check: http://www.ansys.com/privacy |
| |
*------------------------------------------------------------------*
2024 R2
Point Releases and Patches installed:
Ansys, Inc. License Manager 2024 R2
LS-DYNA 2024 R2
Core WB Files 2024 R2
Mechanical Products 2024 R2
***** MAPDL COMMAND LINE ARGUMENTS *****
BATCH MODE REQUESTED (-b) = NOLIST
INPUT FILE COPY MODE (-c) = COPY
DISTRIBUTED MEMORY PARALLEL REQUESTED
4 PARALLEL PROCESSES REQUESTED WITH SINGLE THREAD PER PROCESS
TOTAL OF 4 CORES REQUESTED
INPUT FILE NAME = /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/StaticStructural/dummy.dat
OUTPUT FILE NAME = /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/StaticStructural/solve.out
START-UP FILE MODE = NOREAD
STOP FILE MODE = NOREAD
RELEASE= 2024 R2 BUILD= 24.2 UP20240603 VERSION=LINUX x64
CURRENT JOBNAME=file0 22:33:14 NOV 18, 2024 CP= 0.239
*** FATAL *** CP = 0.254 TIME= 22:33:14
The requested number of distributed-memory processes (4) exceeds the
number of physical processors that are available (2) on machine:
218b142ddeff. The use of virtual processors is not recommended. It
is required that you use a maximum of 2 distributed-memory processes
on this machine.
************************************************************************
The above error is non-recoverable by ANSYS
ANSYS run terminated by the indicated error
Current data base saved if possible.
************************************************************************
+--------------------- M A P D L S T A T I S T I C S ------------------------+
Release: 2024 R2 Build: 24.2 Update: UP20240603 Platform: LINUX x64
Date Run: 11/18/2024 Time: 22:33 Process ID: 16192
Operating System: Ubuntu 20.04.6 LTS
Processor Model: AMD EPYC 7763 64-Core Processor
Compiler: Intel(R) Fortran Compiler Classic Version 2021.9 (Build: 20230302)
Intel(R) C/C++ Compiler Classic Version 2021.9 (Build: 20230302)
AOCL-BLAS 4.2.1 Build 20240303
Number of processes requested : 4
Number of threads per process requested : 1
Total number of cores requested : 4 (Distributed Memory Parallel)
MPI Type: INTELMPI
MPI Version: Intel(R) MPI Library 2021.11 for Linux* OS
GPU Acceleration: Not Requested
Job Name: file0
Input File: dummy.dat
Core Machine Name Working Directory
-----------------------------------------------------
0 218b142ddeff /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/StaticStructural
1 218b142ddeff /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/StaticStructural
2 218b142ddeff /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/StaticStructural
3 218b142ddeff /tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/StaticStructural
Total CPU time for main thread : 0.6 seconds
Total CPU time summed for all threads : 0.3 seconds
Elapsed time spent obtaining a license : 0.5 seconds
Elapsed time spent pre-processing model (/PREP7) : 0.0 seconds
Elapsed time spent solution - preprocessing : 0.0 seconds
Elapsed time spent computing solution : 0.0 seconds
Elapsed time spent solution - postprocessing : 0.0 seconds
Elapsed time spent post-processing model (/POST1) : 0.0 seconds
+------------------ E N D M A P D L S T A T I S T I C S -------------------+
*-----------------------------------------------------------------------------*
| |
| RUN COMPLETED |
| |
|-----------------------------------------------------------------------------|
| |
| Ansys MAPDL 2024 R2 Build 24.2 UP20240603 LINUX x64 |
| |
|-----------------------------------------------------------------------------|
| |
| Database Requested(-db) 1024 MB Scratch Memory Requested 1024 MB |
| Maximum Database Used 1 MB Maximum Scratch Memory Used 1 MB |
| |
|-----------------------------------------------------------------------------|
| |
| CP Time (sec) = 0.265 Time = 22:33:14 |
| Elapsed Time (sec) = 2.000 Date = 11/18/2024 |
| |
*-----------------------------------------------------------------------------*
ERROR: Worker process(es) with rank(s) solve have encountered a FATAL error.
The information below was gathered from the file*.out output file(s).
Please review the worker process output file(s) listed below for more
details on this error.
FATAL error message: solve.out
The requested number of distributed-memory processes (4) exceeds the
number of physical processors that are available (2) on machine:
218b142ddeff. The use of virtual processors is not recommended. It
is required that you use a maximum of 2 distributed-memory processes
on this machine.
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/MatML.xml to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/MatML.xml: 0%| | 0.00/23.3k [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/MatML.xml to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/MatML.xml: 100%|██████████| 23.3k/23.3k [00:00<00:00, 138MB/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/CAERepOutput.xml to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/CAERepOutput.xml: 0%| | 0.00/862 [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/CAERepOutput.xml to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/CAERepOutput.xml: 100%|██████████| 862/862 [00:00<00:00, 3.33MB/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/ds.dat to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/ds.dat: 0%| | 0.00/4.85M [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/ds.dat to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/ds.dat: 100%|██████████| 4.85M/4.85M [00:00<00:00, 358MB/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/CAERep.xml to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/CAERep.xml: 0%| | 0.00/28.2k [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/CAERep.xml to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/CAERep.xml: 100%|██████████| 28.2k/28.2k [00:00<00:00, 181MB/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/file0.err to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/file0.err: 0%| | 0.00/896 [00:00<?, ?B/s]
Downloading dns:///127.0.0.1:10000:/tmp/ANSYS.root.1/AnsysMech257C/Project_Mech_Files/file_Mech_Files/StaticStructural/file0.err to /__w/pymechanical/pymechanical/examples/embedding_n_remote/download/file0.err: 100%|██████████| 896/896 [00:00<00:00, 3.52MB/s]
Exit remote session#
Close the Mechanical instance.
mechanical.exit()
Embedded Instance#
Download the geometry file#
Download Valve.pmdb.
import os
import ansys.mechanical.core as mech
from ansys.mechanical.core.examples import download_file
geometry_path = download_file("Valve.pmdb", "pymechanical", "embedding")
print(f"Downloaded the geometry file to: {geometry_path}")
Downloaded the geometry file to: /github/home/.local/share/ansys_mechanical_core/examples/Valve.pmdb
Embed Mechanical and set global variables#
Find the mechanical installation path & version. Open an embedded instance of Mechanical and set global variables.
app = mech.App()
app.update_globals(globals())
print(app)
Ansys Mechanical [Ansys Mechanical Enterprise]
Product Version:242
Software build date: 06/03/2024 09:35:09
Add Static Analysis#
Add static analysis to the Model.
analysis = Model.AddStaticStructuralAnalysis()
Import geometry#
geometry_file = geometry_path
geometry_import = Model.GeometryImportGroup.AddGeometryImport()
geometry_import_format = Ansys.Mechanical.DataModel.Enums.GeometryImportPreference.Format.Automatic
geometry_import_preferences = Ansys.ACT.Mechanical.Utilities.GeometryImportPreferences()
geometry_import_preferences.ProcessNamedSelections = True
geometry_import.Import(geometry_file, geometry_import_format, geometry_import_preferences)
Assign material#
matAssignment = Model.Materials.AddMaterialAssignment()
tempSel = ExtAPI.SelectionManager.CreateSelectionInfo(
Ansys.ACT.Interfaces.Common.SelectionTypeEnum.GeometryEntities
)
bodies = [
body
for body in ExtAPI.DataModel.Project.Model.Geometry.GetChildren(
Ansys.Mechanical.DataModel.Enums.DataModelObjectCategory.Body, True
)
]
geobodies = [body.GetGeoBody() for body in bodies]
ids = System.Collections.Generic.List[System.Int32]()
[ids.Add(item.Id) for item in geobodies]
tempSel.Ids = ids
matAssignment.Location = tempSel
matAssignment.Material = "Structural Steel"
Define mesh settings#
mesh = Model.Mesh
mesh.ElementSize = Quantity("25 [mm]")
mesh.GenerateMesh()
Define boundary conditions#
fixedSupport = analysis.AddFixedSupport()
fixedSupport.Location = ExtAPI.DataModel.GetObjectsByName("NSFixedSupportFaces")[0]
frictionlessSupport = analysis.AddFrictionlessSupport()
frictionlessSupport.Location = ExtAPI.DataModel.GetObjectsByName("NSFrictionlessSupportFaces")[0]
pressure = analysis.AddPressure()
pressure.Location = ExtAPI.DataModel.GetObjectsByName("NSInsideFaces")[0]
inputs_quantities = [Quantity("0 [s]"), Quantity("1 [s]")]
output_quantities = [Quantity("0 [Pa]"), Quantity("15 [MPa]")]
inputs_quantities_2 = System.Collections.Generic.List[Ansys.Core.Units.Quantity]()
[inputs_quantities_2.Add(item) for item in inputs_quantities]
output_quantities_2 = System.Collections.Generic.List[Ansys.Core.Units.Quantity]()
[output_quantities_2.Add(item) for item in output_quantities]
pressure.Magnitude.Inputs[0].DiscreteValues = inputs_quantities_2
pressure.Magnitude.Output.DiscreteValues = output_quantities_2
Solve model#
Model.Solve()
Add results#
solution = analysis.Solution
solution.AddTotalDeformation()
solution.AddEquivalentStress()
solution.EvaluateAllResults()
Save model#
project_directory = ExtAPI.DataModel.Project.ProjectDirectory
print(f"project directory = {project_directory}")
ExtAPI.DataModel.Project.SaveAs(os.path.join(project_directory, "file.mechdb"))
project directory = /tmp/ANSYS.root.1/AnsysMechF21F/Project_Mech_Files/
Export result values to a text file#
fileExtension = r".txt"
results = solution.GetChildren(
Ansys.Mechanical.DataModel.Enums.DataModelObjectCategory.Result, True
)
for result in results:
fileName = str(result.Name)
print(f"filename: {fileName}")
path = os.path.join(project_directory, fileName + fileExtension)
print(path)
result.ExportToTextFile(f"{path}")
print("Exported Text file Contents", path)
try:
write_file_contents_to_console(path, number_lines=20)
except:
print(os.listdir(project_directory))
app.close()
filename: Total Deformation
/tmp/ANSYS.root.1/AnsysMechF21F/Project_Mech_Files/Total Deformation.txt
Exported Text file Contents /tmp/ANSYS.root.1/AnsysMechF21F/Project_Mech_Files/Total Deformation.txt
['file.mechdb', 'file_Mech_Files']
filename: Equivalent Stress
/tmp/ANSYS.root.1/AnsysMechF21F/Project_Mech_Files/Equivalent Stress.txt
Exported Text file Contents /tmp/ANSYS.root.1/AnsysMechF21F/Project_Mech_Files/Equivalent Stress.txt
['file.mechdb', 'file_Mech_Files']
Total running time of the script: (0 minutes 59.873 seconds)