In this paper, a new virtual cellular manufacturing approach is developed considering dynamic demand arrivals. In order to obtain an efficient integrated method, agent-based modelling approach is used. Since agent-based modelling has the ability to track and evaluate real time information successfully and to model the complex systems effectively. The proposed approach enables to realise part family formation, virtual cell formation and scheduling phases simultaneously. The applicability and efficiency of the proposed approach is tested via several scenarios which are prepared considering various parameters and strategies of manufacturing. The results are discussed and it is shown that the proposed approach is promising in dynamic manufacturing environments.