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Re: [Question #199514]: Periodic triaxial test example in chapter 2 does not work

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From: liucheng83 <question199514@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 07 Jun 2012 10:55:47 -0000
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Question #199514 on Yade changed:
https://answers.launchpad.net/yade/+question/199514

liucheng83 gave more information on the question:
Is there another bug? when I run the Periodic triaxial test examplein chapter 2 (Tutorial) with 
-----

	InteractionLoop(
		#[Ig2_Sphere_Sphere_L3Geom()],
		#[Ip2_FrictMat_FrictMat_FrictPhys()],
		#[Law2_L3Geom_FrictPhys_ElPerfPl()]
		[Ig2_Sphere_Sphere_ScGeom()],
		[Ip2_FrictMat_FrictMat_FrictPhys()],
		[Law2_ScGeom_FrictPhys_CundallStrack()]
	),
-------------
the stress will always greater than 0, so the "goal=(-1e5,-1e5,-1e5),stressMask=7"  can never be reached.
and I modified it with 
----

	InteractionLoop(
		#[Ig2_Sphere_Sphere_L3Geom()],
		#[Ip2_FrictMat_FrictMat_FrictPhys()],
		#[Law2_L3Geom_FrictPhys_ElPerfPl()]
		[Ig2_Sphere_Sphere_ScGeom()],
		[Ip2_FrictMat_FrictMat_FrictPhys()],
		[Law2_ScGeom_FrictPhys_CundallStrack()]
	),
-------------------
It give the stress little than 0, and It can be finished at last, Is there any bug for the "Law2_L3Geom_FrictPhys_ElPerfPl()"?
Anybody know can give me some suggestion,  thank you !

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