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Re: [Question #206415]: getStress() applies for clumps?

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From: ceguo <question206415@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 18 Dec 2012 15:15:56 -0000
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Question #206415 on Yade changed:
https://answers.launchpad.net/yade/+question/206415

ceguo posted a new comment:
Yes, for calculating body stress per particle, the contact point position should be used. 
While for the calculation of homogenized bulk stress, the use of branch vector (connecting clumps centres) is appropriate. Actually the branch vector is defined as the connection between centroids of two particles in contact. See (H. Ouadfel, L. Rothenburg, 2001, Mech. Mater.). In their case using ellipsoidal particles, the contact points are mostly NOT aligned on the branch vector.

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