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[Robert Caulk <question692918@xxxxxxxxxxxxxxxxxxxxx>]

Question #692918 on Yade changed:
https://answers.launchpad.net/yade/+question/692918

Robert Caulk proposed the following answer:
Hello,

Please stop linking to dropbox. I'll point you, once again after our
personal communications, to our posting guidelines [1].

"Please, no external links!
Launchpad will not let files be attached to questions and answers. As a workaround many users tend to provide links to external repositories. However removing the need for external files is part of creating a good MWE, hence external links on Yade launchpad are declared poor practice and should be avoided.

External links mean the potential responder will need to click multiple times just to read the question, while he/she is possibly reading it offline (via emails) and on an arbitrary device (e.g. cell phone). This potential responder might then simply move to next question (some of them even systematically do so).
The persistence of external links over time is not guaranteed, it will make the archive incomplete.
External links are not properly crawled into by search engines
How to avoid external links:

Showing a script should be possible in launchpad, since the scripts are supposed to be short (see previous section on MWE).
If the input of one script is the output of another script, then both scripts should be merged into one. That is: avoid sending multiple scripts just like you avoid sending input files to a script. If needed, the method to save and reload in one single script is illustrated here.
Error logs (be it compilation or runtime error) can be long, sometimes, yet the relevant lines are not many. If the log is very long please identify the error which comes first and paste only that one (together with user's input command).
Input files with particle coordinates or input mesh are not needed, in most cases. They can be replaced by writing coordinates directly in the script or using makeCloud or similar functions. Most problems are not due to a specific number of particles or the specific shape of an imported geometry. Instead, they can be reproduced with just a few facets and a few spheres (or clumps or whatever is in a specific situation).
Although removing external links may need a bit more work before sending the question, this extra time spent by the person asking means less time lost by the person answering. This is just fair. Moreover, by doing so you may well understand the problem by yourself in many cases."

That being said, the example now shows how to generate the packing [2].

>this or, I would like to know why there are different
coefficients(0.971, 0.915,0.943)?

These just accelerate the simulation by placing the blocks as close as
possible to the rough surface without touching. You can place them
further away and wait for them to approach the beam if you like. These
values are unique to each packing.

Cheers,

Robert


[1]https://www.yade-dem.org/wiki/Howtoask
[2]https://gitlab.com/yade-dev/trunk/-/blob/master/examples/AcousticEmissions/bendingTest.py

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