> Hi all, > > Maybe I should have report a bug for that, but I do not really get > where is the issue... Hi Luc,
thanks for reporting that, it was really a bug. Next time, don't hesitate to file bug at http://bugs.launchpad.net, such things should not be forgotten. The problem was that Ig2_Facet_Sphere_Dem3DofGeom created the interaction, but the reference (initial) length was computed a little differently than displacementN() called from in Law2_.._CundallStrack; it gave displacement of something like 1e-16 (numerical residuum), which was "positive", hence the interaction was deleted immediately. It is fixed now (see attachment; r1914) and in the future, the dispatcher will detect if contact is made real and deleted at the very same step, reporting an error. (Perhaps such checks should be done only in debug build?) Cheers, Vaclav
<<attachment: fixed.png>>
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