Research On The Optimization Of Purchasing Model Based On Group Enterprise In Supply Chain

With the trend of globalization of Chinese market today,the tendency of enterprises to transform into group enterprises is becoming more and more obvious,a variety of group companies continue to emerge,the research on the optimization of the purchase model based on the group enterprise in supply Chain has become the focus of attention and research.Procurement has always been the focus of logistics system research,so the research on the model of the group enterprises is of great significance.In this paper,we first introduce the procurement model of group enterprises,analyze the various costs related to the purchase of group companies,We carry on the quantitative analysis to the logistics cost,on the basis of analyzing each cost point,the overall profit optimization model is established,which is based on the cooperation and the non cooperation between the supplier and the group enterprises,through the analysis and comparison of the optimization model of the overall profit in two cases,the optimal boundary conditions between the supplier and the group enterprises are obtained.When the coordination cost between the two enterprises is greater than or equal to the amount of the order cost savings of the group enterprises,the best decision is that the two sides do not cooperate,otherwise,the two sides should choose cooperation.Then,the optimization model of purchasing quantity distribution for group enterprises is studied and analyzed,based on the characteristics of the group enterprises,a model of purchasing optimization for the characteristics of the group enterprises is established,this is a multi-objective optimization problem,with the maximum satisfaction method to solve,which introduces the membership function of fuzzy mathematics.The weight of decision preference is proposed,it makes every target to achieve the overall optimal,when the allocation of purchasing quantity,if the multiple objectives need to be optimized simultaneously,according to the actualsituation of setting up the decision preference weight and then satisfaction function can be established,the optimal allocation of purchasing quantity quota,in this way,we can get the optimal quota of purchase quantity.Secondly,the research on the model of purchasing optimization based on the internal allocation of group enterprises is carried out,based on the environment of supply chain,the optimization model is built from the characteristics of the internal allocation ability of group enterprises,the purchasing quantity and allocation of the enterprise is studied,and the numerical example is analyzed by the differential evolution algorithm.Finally this paper gives the relevant conclusions,the shortcomings and future research directions.