New question #701184 on Yade:
https://answers.launchpad.net/yade/+question/701184
Hi, All,
I want to simulate a triaxial test of two materials, firstly, I want to do
isotropic compression without friction and rolling resistance (set to zero )
for dense sample, and then I want to add the parameters of friction and
rolling resistance in the following simulation. Although I refer to the
documents or many discussion here, I still have several doubts and questions
when simulating:
1) In CohFrictPhys[2], there is a parameter maxRollPl, and there is etaRoll
in CohFrictMat[3], what is the difference, in my opinion, etaRoll represents
rolling friction of material and maxRollPl represents the rolling friction of
interactions, and maxRollPl = max(etaRoll of mat1,etaRoll of mat2), is it right?
2)In Ip2_CohFrictMat_CohFrictMat_CohFrictPhys[1], the frictAngle between two
materials can be defined by MatchMaker , but some other parameters of
CohFrictPhys[2] seems not to have this functions, such as the maxRollPl .
The materials have different etaRoll values, so I want to customize the
maxetaRoll at the interaction of different materials, is it possible?
3. For adding new properties, I know that i should loop the existing
interactions and change the material properties. maybe I can use following
method to get it?, some pseudo code as following:
#modify the interaction
for i in O.interactions:
if O.bodies[i.id1].mat==mat1 and O.bodies[i.id2].mat==mat1 #between
material 1
i.phys.maxRollPl=0.1
else if O.bodies[i.id1].mat==mat2 and O.bodies[i.id2].mat==mat2 #between
material 2
i.phys.maxRollPl=0.2
else #between two different materials
i.phys.maxRollPl=0.3
#modify the materials
O.materials[0].etaRoll=0.1
O.materials[1].etaRoll=0.2
However, how I deal with the new interaction with defining a maxRollPl
instead of default.
[1]https://yade-dem.org/doc/yade.wrapper.html?highlight=frictphys#yade.wrapper.Ip2_CohFrictMat_CohFrictMat_CohFrictPhys
[2]https://yade-dem.org/doc/yade.wrapper.html?highlight=cohfrictphys#yade.wrapper.CohFrictPhys
[3]https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.CohFrictMat
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