Research On Dynamic Distribution Route Planning Of Cold Chain Logistics Of Hunan Feiniao Logistics Company

With the development of economy,people's demand for fresh fruits and vegetables increased year by year.Fresh fruits and vegetables have become an indispensable necessity in people's lives.Because of the characteristics of fresh fruit and vegetable perishable,quality can not be guaranteed in the process of circulation and the damage rate of more than 10%might cause a lot of waste so as the economy does.During the process of logistics and transportation,the high requirements of refrigerated equipment and the scientific planning of distribution routes are particularly important.It is of important practical significance to study the path optimization of cold chain logistics transportation,to improve the quality of fresh fruits and vegetables,and to better service the probability of rebuying customers.In this thesis,the Hunan Feiniao Logistics Transportation Co.Ltd.is used as the background,starting from the basic concept of cold chain logistics and vehicle routing optimization problem of the basic concepts,discusses the present situation of the development of cold chain logistics transportation city and practical problems in operation.Then the model and solving algorithm of urban dynamic route planning are studied,and a feasible method is provided for solving the problem.On this basis,it firstly analyzes costs of the distribution.Then it describes four stages of refrigerator truck speed which are divided into rush-hour,daytime non-rush hour,non-rush hour and night rush hour in view of different case of urban traffic congestion in each time period.Following that,it introduces a concept of customer repurchase degree.The service time is used as the evaluation index to establish the model and the objective function is the path optimization model with the lowest total cost and the highest customer repurchase degree.According to the model,the genetic algorithm is used to design and solve the problem,and the simulation software is used for simulation analysis.This paper selects 15 green fruit supermarkets as objects of case analysis in the Kaifu District in Changsha City.The establishment of distribution network and the model with the corresponding algorithm can solve the optimal distribution scheme,which puts forward some suggestions for the distribution process of Feiniao logistics company in the future with the best service under the condition of transportation at the lowest cost in order to improve logistics cold chain delivery system of nest.