fa سایر موضوعاتی که به مرزهای دانش در مهندسی صنایع و تولید کمک می کند Other related Industrial and production reserach subjects in which has direct relation to the state-of-the art of the IE پژوهشي Research <p> <i> Cell formation is the first and most important problem in designing cellular manufacturing systems. We have modeled the dynamic cell formation problem with respect to the minimization of the intercellular movement and cellular reconfiguration costs. Due to the nonpolynomiality of the cell formation models, a newly introduced metaheuristic namely the grenade explosion method (GEM) is applied to solve the proposed model. We have introduced some modifications to improve the performance of the standard GEM which are modifying the location of the grenade explosion in each step, modifying the correction process of the infeasible solutions and introducing free grenade as a new component of the GEM. The proposed modified GEM is compared to the standard GEM and a simulated annealing algorithm through some numerical examples. The computational results illustrate the preference of the GEM algorithms over the simulated annealing algorithm. Furthermore, the results obtained using the modified GEM are superior to those ones achieved using the standard GEM </i><i>. </i></p> Cellular manufacturing systems, Dynamic cell formation, Metaheuristics, Grenade explosion method 235 242 http://ijiepm.iust.ac.ir/browse.php?a_code=A-10-646-2&slc_lang=fa&sid=1 Jamal Arkat j.arkat@uok.ac.ir 180031947532846005279 180031947532846005279 Yes Department of Industrial Engineering, University of Kurdistan, Sanandaj, Iran Mehdi Hosseinabadi Farahani 180031947532846005280 180031947532846005280 No Department of Industrial Engineering, University of Kurdistan, Sanandaj, Iran Vahid Naseri 180031947532846005281 180031947532846005281 No Department of Industrial Engineering, University of Kurdistan, Sanandaj, Iran