  Soft cellular systems, such as foams or biological tissues, exhibit highly
complex rheological properties, even in the quasistatic regime, that numerical
modeling can help to apprehend. We present a numerical implementation of
quasistatic strain within the widely used cellular Potts model. The accuracy of
the method is tested by simulating the quasistatic strain 2D dry foams, both
ordered and disordered. The implementation of quasistatic strain in CPM allows
the investigation of sophisticated interplays between stress-strain
relationship and structural changes that take place in cellular systems.
