Keywords: manual

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## energy_data.update_dynamic -- nonbond recalculation threshold

> This sets the cumulative maximal atomic shift during optimization that triggers recalculation of the list of atom-atom non-bonded pairs. It should be set in combination with energy_data.contact_shell.

> For soft-sphere overlap, to be absolutely sure that no unaccounted contacts occur, energy_data.update_dynamic has to be equal to (energy_data.contact_shell - `maximal_overlap_distance`) / 2. `maximal_overlap_distance` is equal to the diameter of the largest atom in the model; it is 3.2 Å in the case of the all non-hydrogen atoms model. This distance is the energy_data.contact_shell value if a default is requested. Factor 2 comes from the fact that the moves of both atoms can reduce the distance between them.