Research On Optimization Model And Application Of Enterprise Distribution Network Considering Service Level And Sustainability In The Physical Internet

At present,the enterprise’s distribution network is mainly the private distribution network(PDN).The private distribution network only serves one enterprise,and the design decision is to support the product distribution of the enterprise.The distribution network between enterprises is independent.With the changing market environment,such as increasing customer service requirements and shortened product life cycle,the current private distribution network has problems such as overstocking and order loss at the strategic and operational levels,which requires the redesign of the distribution network to improve adaptability.The Physical Internet(PI)is an open global logistics system concept proposed by Benoit Montreuil.It can realize the interconnection of logistics networks through standardization cooperation agreements,modular containers and intelligent interfaces,thereby improving the efficiency and sustainability of the network.The proposed PI provides a new direction for the design of distribution networks,enabling the interconnection of distribution networks.Compared to a private distribution network,the Physical Internet enabled interconnected distribution network can share the capacities of existing resources,including the capacities of distribution centers,vehicles and other facilities.Through the PI hub,the transportation consolidation can be achieved and the efficiency of the distribution network can be improved.At the same time,as customers’ demand for service levels continues to increase and society’s increasing focus on sustainability,it is realistic to consider service levels and sustainability in distribution network design issues.Based on the above background,the optimization problem of distribution network in the Physiacl Internet is studied,and the service level and sustainability of the distribution network are considered.The research content mainly includes the following aspects:(1)In the optimization problem of enterprise distribution network considering the service level in the Physiacl Internet,the characteristics of the Physiacl Internet enabled interconnection distribution network are introduced.The Physiacl Internet is mathematically described from the PI containerization of the product,the use of the distribution center in the Physiacl Internet,the transportation in the Physiacl Internet and the handling of PI containers at the PI hub.The service level of the distribution network is analyzed and the service level penalty function is constructed,and the private distribution network optimization model and the interconnection distribution network optimization model considering the service level are constructed.Finally,the genetic algorithm for solving the problem was designed.(2)In the optimization problem of enterprise distribution network considering the service level and sustainability in the Physiacl Internet,the sustainability of the distribution network is further considered.The sustainability was measured from the economic dimension,the environmental dimension and the social dimension respectively for private distribution network and the interconnected distribution network,and the private distribution network optimization model and the interconnected distribution network optimization model considering service level and sustainability were constructed respectively.Finally,the algorithm for solving the problem was designed.(3)Based on the background of three fast-moving consumer goods enterprises,the potential application research will be conducted on the optimization model to verify the validity of the proposed model,and a comparison of the optimization schemes of the private distribution network and the interconnected distribution network is made to analysis the performance of interconnected distribution networks in terms of total system cost,service level and sustainabilityThe research results show that the interconnected distribution network can realize the sharing of the distribution centers between enterprises and improve the service level and sustainability of the distribution network.The model and solution method constructed in this paper can provide theoretical reference and method support for the optimization of enterprise distribution network.