关键词: 钢铁物流, 协同采购策略, 采购物流成本, 需求满意契合度, 模拟退火算法

Abstract: This paper focused on the optimization of inner logistics system in steel sector. Based on the detailed analysis of coordinated procurement strategy, related logistics cost of subtactics were considered, and optimal cost was then computed. To maximize the demand conformity degree and minimize the procurement logistics cost, corresponding purchasing strategy model was established, which was transformed to singleobjective model by balance index. Each sub-company’s suppliers were selected according to the evaluation result on independent purchasing. The simulated annealing algorithm used to solve the problem was designed according to the neighbourhood method in which solutions were constructed step by step. According to the computation and analysis results on typical instance, coordinated procurement strategy can save purchasing cost inside steel company and increase profit to a great degree.

Key words: steel logistics, coordinated procurement strategy, procurement logistics cost, demand conformity degree, simulated annealing algorithm