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[Nna <question235307@xxxxxxxxxxxxxxxxxxxxx>]

New question #235307 on Yade:
https://answers.launchpad.net/yade/+question/235307

hello ,
i am having some difficulties in defineing a  wall on the top and bottom of my sample with some specific properties. 

O.bodies.append(utils.geom.facetBox((0.014,0.014,0.028),(0.014,0.014,0.028),wallMask=15,dynamic=1)) top is not fixed
O.bodies.append(utils.geom.facetBox((0.014,0.014,0.028),(0.014,0.014,0.028),wallMask=16,dynamic=0))#bottom is fixed

 O.bodies.append(utils.geom.facetBox((0.014,0.014,0.084),(0.014,0.014,0.028),wallMask=15))#!!!! in order to control the particles!!! after the end of the stabilization, we will remove it


i try to define the material  as below
O.bodies.append(utils.geom.facetBox((0.014,0.014,0.028),(0.014,0.014,0.028),wallMask=15,dynamic=1,material=manu)) top is not fixed
O.bodies.append(utils.geom.facetBox((0.014,0.014,0.028),(0.014,0.014,0.028),wallMask=16,dynamic=0,material=manu))#bottom is fixed

i noticed that this material is applied allover the wall, but what i want is to define the material only at the top and and bottom
Question1
is it possible to define the properties of each wall seprately(example topandbottom_walls=material_1, other_walls=material2) 
if yes, how?

Question2
is it also possible to creat a plate at the top and bottom of the walls ,making the top plate dynamic and the bottom fixed and achived thesame result(objective) as the wall, 
if yes, how?

thanks in advanced for your contribution
Nna

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