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[Jérôme Duriez <question682755@xxxxxxxxxxxxxxxxxxxxx>]

Question #682755 on Yade changed:
https://answers.launchpad.net/yade/+question/682755

Jérôme Duriez proposed the following answer:
Hi,

It seems the YADE variables you spoke about can be accessed by users in
a read-write manner, then:

1-
b.state = JCFpmState() # will assign a JCFpmState instance with default attributes to any body b. 

This being said, the expected workflow, from a user point of view, is
more to assign JCFpmMat materials to your bodies, call the appropriate
engines to apply JCF contact law, then just rely on those engines for
JCFpmState to appear in your simulation, without any further action.

3-
i.phys.jointNormal = (1,0,0) # will modify the jointNormal attribute of an existing JCF interaction "i"

However, this is again not really expected in general. What attributes
of JCFpmPhys (and why) would you like to change ?


As for 2-

Introducing a joint into one sphere does not make sense in YADE JCFpm
logic. You need to have interactions (2 spheres at least) to speak about
joint. You have (two ! gravityLoading.py is using an external
description of the joint in stl format, gravityBis.py defines within
YADE, with gts module, the joint) examples about defining joint
geometries in folder [1] in Luc's answer #1.

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