yade-dev team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxxxxxx>]

Hi Gaël,

Thank you for your email. And no you are not colliding with my work 
since I have it in mind but didn't start anything yet.

I would suggest you create a gitlab account if you don't have one so we 
can add you as yade contributor.

You can then push your change to a branch. Something like (assuming you 
modified the sources directly in local master branch):

/git push origin master:PFacetFix /


I'm eager to understand which problem you found. :)


Bruno


On 23/02/2021 21:59, Gael Lorieul wrote:
> Hi 😊️
>
> It has been a long time…
>
> I have come accross thread #694548 on the "Yade-users" mailing list 
> (from January 2021), which concerned unphysical collisions between 
> PFacets (the dynamics of the rebound does not correspond to what one's 
> physical/common sense would expect).
>
> I wanted to share that I encountered a very similar issue but with 
> gridConnection objects (I work with cylinders), and that I found a 
> solution. The latter should be easily extendible both to PFacet/PFacet 
> and PFacet/gridConnection collisions (although I only tested 
> gridConnection/gridConnection collisions). I am not sure how elegant 
> or computationally efficient it is, but it has given me good results 
> on the (very few) simulations I have tested it on.
>
> I initially wanted to test my solution on full-scale simulations 
> before submiting it to the Yade code base, so as to present a code 
> that is robust and mature. But as it has been almost a full year since 
> then (the company I work for gave me assignments other than DEM), I 
> feel that perhaps I should reach out for other ways to share this 
> information…
>
> This implies that although I am quite confident of my fix, I am not 
> 100% certain either…
>
> Perhaps a first step would be for me to present what I have found, and 
> how my fix works? I am not sure as to where to present it: This 
> mailing list? Thread #694548? You tell me 😉️
>
> Gaël
>
>
> PS: I have started to re-implement my solution in yade e07e530 (26 Nov 
> 2020) (my previous implementation was based on yade 1b4ae97 (8 Feb 
> 2020)). Hopefully the work I do on e07e530 will not be difficult to 
> port to the latest yade versions… (It seems the yade project started 
> using clang-format (or similar tool) sometime between e07e530 and 
> 1b4ae97 so `diff` outputs half the file: not very helpful… 😆️)
>
> PS2: Could thread #695558 be also concerned by this same uncorrect 
> physical behavior?
>
> PS3: I hope that I am not colliding with Bruno's work on the subject 
> (according to Bruno's e-mail of Tue, 12 Jan 2021 07:50:51)
>
>
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