R. Kia - Department oflndustrial Engineering, Firoozkooh Branch, Islamic Azad University, Firoozkooh
j Khorrami - Department oflndustrial Engineering, Mazandaran University of Science and Technology, Babol
n Javadian
i Mahdavi

This paper presents a novel mixed-integer nonlinear programming model for the intra-cell layout (ICL) design of a dynamic cellular manufacturing system (DCMS).A novel aspect of this model is concurrently making the cell formation (CF) and ICL decisions in a dynamic environment. The proposed model incorporates severaldesign features including alternative process routings, operation sequence, processing time, production volume ofparts, duplicate machines, machine capacity, ICL, multirows layout of unequal-area facilities, continuous-area cells with rectangle regular shapes and machine relocation. Sincethe problem is NP-hard, an efficient simulated annealing (SA) algorithm is developed to solve the proposed model. Itis then tested using 10 test problems with different sizes and settings to verify the performance of the proposed model and the computational efficiency of the developed algorithm incompare to classical genetic algorithm (GA) and Lingo software.

Dynamic ceUular manufacturing systems; IntraceO layout; Simulated annealing; Unequal-area facilities