  We numerically investigate the stress distribution of a paste when an
external oscillation is applied. The paste memorizes the oscillation as plastic
deformation. Due to the plastic deformation, the residual stress remains after
the oscillation, where the residual stress distribution depends on the number
of cycles in the oscillation. As this number increases, the symmetry of the
stress distribution is enhanced, which is consistent with the crack patterns
observed in the experiments using a drying paste.
