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Re: periodic stress tensor with clumps


Does someone have a suggestion how to make the computation "right"? Or am I seeing an inconsistency where there is none?

You are right, it needs to adapt equations.
Simply write stress_ij = branch_i * force_j, with branch = (clumpReferencePoint - contactPoint). clumpReferencePoint could be anything, no absolute need to make it center of gravity or anything else : just the same point for all spheres in the clump. Using a point inside the clump will probably minimize the effect of non-staticity however.