yade-dev team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

Forwarding Klaus reply. My answer follows.


On 28/01/14 01:14, Klaus Thoeni wrote:
> Hi Bruno,
>
> the main difference is that the contact stiffness kn and the ratio kt/kn are 
> defined in the IP2 functor as indicated in the commit massage via MatchMakers 
> (btw, I think we should use them more often, especially if you deal with 
> various materials in one simulation they become very handy). Further, it 
> provides to Ip2 functors:
> - Ip2_FrictViscoMat_FrictViscoMat_FrictViscoPhys: contact between two 
> FrictViscoMats
> - Ip2_FrictMat_FrictViscoMat_FrictViscoPhys: contact between a FrictMat and a 
> FrictViscoMat but using normal viscous damping 
>
> The Law is linear elastic-plastic (Cundall Strack) with normal viscous 
> damping. The model is very simple and avoids all the other parameters and if 
> statements as in the current viscoelastic law.
>
> IMO, there is a potential of merging FrictViscoMat with ViscElMat. However, I 
> wanted to commit this law so that we can see the advantage of using MatchMaker 
> and IP2 functors between different materials. Last but not least I think we 
> could probably split visco-elastic and capillary parameters.
>
> Anyway, I am glad you asked because I see potential of improving on both 
> sides. What do you think?
>
> BTW, any other news?
>
> Cheers
> Klaus
>  
>
> On Monday 27 January 2014 16:03:19 Bruno Chareyre wrote:
>> Hi Klaus,
>> There has been significant work recently on the older viscoelastic law,
>> now reaching a level of maturity.
>> Could you please explain how this one is different?
>>
>> Regards
>>
>> Bruno
>>
>> On 24/01/14 23:55, noreply@xxxxxxxxxxxxx wrote:
>>> ------------------------------------------------------------
>>> revno: 3804
>>> committer: Klaus Thoeni <klaus.thoeni@xxxxxxxxx>
>>> timestamp: Sat 2014-01-25 08:59:41 +1100
>>>
>>> message:
>>>   new simple contact law with normal viscose damping which allows to
>>>   specify kn and ks/kn in Ip2> 
>>> added:
>>>   pkg/dem/FrictViscoPM.cpp
>>>   pkg/dem/FrictViscoPM.hpp
>>>
>>> 0
>>> --
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>> --
>> _______________
>> Bruno Chareyre
>> Associate Professor
>> ENSE³ - Grenoble INP
>> Lab. 3SR
>> BP 53
>> 38041 Grenoble cedex 9
>> Tél : +33 4 56 52 86 21
>> Fax : +33 4 76 82 70 43
>> ________________


-- 
_______________
Bruno Chareyre
Associate Professor
ENSE³ - Grenoble INP
Lab. 3SR
BP 53
38041 Grenoble cedex 9
Tél : +33 4 56 52 86 21
Fax : +33 4 76 82 70 43
________________