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Two questions related to EDEM for consultation

The first thing I found interesting is that when using millimeter length units in Motionview and coupling EDEM, the EDEM also uses millimeter units. When importing the coupling results into Hyperview, the EDEM model seems to shrink by a thousand times. However, when using meter length units in Motionview and millimeter units in EDEM, the two models become the same size（model overlap). So, I would like to ask, when Motionview couples EDEM, is it always using meter length units in Motionview and millimeter units in EDEM?Here are two comparison pictures

The second question is that I am conducting angle of repose testing in EDEM. When I open EDEM and use a script, I can obtain the results. However, when I follow the tutorial video in Hyperstudy, it seems that the script is not enabled and does not generate a CSV file

Figure 1：Figure 1: Model Reference

Figure 2: Script Settings

Figure 3: No CSV file was generated as a result

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EDEM

HyperStudy

MotionView/MotionSolve

Accepted answers

Orestis_YB

Hello @Jin1,

regarding your first question, EDEM uses SI units so results will always be in meters and therefore if MotionView is set to meters the animation will much in scale.

Here is a similar community post

Generate h3d file from EDEM results

Best regards,
Orestes

PrasadAvilala

Also, Please add below 2 lines before matplotlib.pyplot as plt should work with this change and if you're using latest version i.e 2025 please remove edempy folder in the import variables

Thanks,

Prasad A

All comments

Jin1

To add, the meaning of my first question is, if you want to view the coupling results of Motionview and EDEM in Hyperview, does Motionview have to use meters as the length unit and EDEM in millimeters?

Orestis_YB

Generate h3d file from EDEM results

Best regards,
Orestes

Stephen Cole

Hi, regarding the .csv generation it is possibly related to point 2 in the note here:

https://community.altair.com/discussion/comment/193722#Comment_193722

First I'd double check that if you run the .py script from the EDEM Analyst > File > Run EDEMpy script that it runs OK on the simulation file, without Hyperstudy. If thre is an error it maybe a mis-match between the version of the script and version of EDEM, or the values in the settings.txt file.

If it runs OK try editing the script and also removing the 'edempy' folder from the HyperStudy inputs as that isn't needed anymore and can cause version issues.

Regards

Stephen

Jin1

This is exactly what I need, thank you very much

Jin1

Hello, I have read your reply and it has confused me a bit. The file I am currently using for the angle of rest is the Static angle of repo test included in the installation package, and the script inside is also included. I learned from this video https://youtu.be/HuO91mCMmjo?si=LRdQRsSAfDDcZeF0 What you mean now is that edempy and the script name will not be modified, which is quite different from this tutorial video. In addition, I have checked the following code and found that there is a line of code that you said "import matplotlib. pyplot as plt". I have attached the source file of my Hyperstudy

hyperstudy.zip

Jin1

In addition, I have validated this script through RUN EDEMPY in EDEM, and the script has no issues. It can generate CSV files and draw images of the resting angle

Stephen Cole

The video example/tutorial for the hyperstudy connector was created a few years ago, so it doesn't represent the latest EDEM and HyperStudy versions directly. These two changes, removing the edempy folder and updating the script, should resolve the issue.

There is some work underway to make an official connector between EDEM and HyperStudy but this has not been released yet.

Regards

Stephen

Jin1

I just deleted the EDEMPY folder, changed the script inside the connector to the default name, and also changed the reference script to the default name inside the connector, but still haven't generated CSV or other files

PrasadAvilala

HI Jin,

For the second query the reason is there should not be any space on the folder and file names.

Please remove space in the folder names and file names it works.

Thanks,

Prasad A

Jin1

Sorry, I have checked my Hyperstudy folder and file names and did not find any spaces and file name and did not find any spaces

PrasadAvilala

I see there is a space between EDEM and 1, correct it's my visualization issue

Thanks,

Prasad A

Jin1

Hello, I asked my friend to help me test the 2022 version, and according to the tutorial, it was successful, so it should be a version issue. Thank you for your inspiration

PrasadAvilala

Hi Jin,

of-late i found one issue i.e in the preference file i.e "Static_angle_of_repose_analyst_settings.txt" the simulation time is 4 sec whereas in EDEM setup file simulation runs for 3 sec. As the simulation time is not same hence .csv file is not generating.

Thanks,

Prasad A

PrasadAvilala

Also, Please add below 2 lines before matplotlib.pyplot as plt should work with this change and if you're using latest version i.e 2025 please remove edempy folder in the import variables

Thanks,

Prasad A

Jin1

Thank you for your patient answer. After adding the code, this question can achieve the same effect as the video

Jin1

Excuse me, I had succeeded in following the method you mentioned before, but when I tried again after some time, the CSV file for the repose angle was not successfully generated, and instead, an ERROR file appeared

PrasadAvilala

Hi Jin,

Can you please share the EDEM files and .txt file and pythin script to test it at my end.

Also, please specify which version of EDEM is used for this case?

Thanks,

Prasad A

Jin1

Hello, I have uploaded the file, but I deleted the EDEM calculation data because it was too large. I used EDEM2025. I added the two lines of code you mentioned in the script, and I didn't modify anything else. I got an ERROR file. Below is the Hyperstudy zip file I uploaded. The EDEM file uses the repose angle test file that comes with the software.I have successfully generated CSV files before, but after a period of time, I tried again and failed

Can you try running using EDEM and Hyperstudy version 2025?

Thanks,

Prasad A

Jin1

It can run, but it cannot generate a CSV file, as if the script is not running

PrasadAvilala

Hi Jin,

Can you please let me know what time your available tomorrow to discuss and close the AoR. Please specify the time zone so that will share the meeting invite to discuss.

Thanks,

Prasad A

Jin1

Thank you again for your help. I checked and reinstalled the software later, and it has been fixed. I checked the ERROR file and found that it was caused by an automatic recognition error in the connector path of EDEM and Hyperstudy. Later, I manually corrected the software startup position in the EDEM connector, and the error disappeared. Thank you again, and according to your method, I have generated CSV format.