| With the improvement of the national economy,as well as the rapid development of logistics industry,cold chain logistics,as an important branch of logistics industry,has aroused more and more attention.Moreover,the modern city facilities and people living standards rise and the demand for fresh agricultural products and frozen food increase,which requires that the cold-chain logistics industry can improve the service level and logistics distribution efficiency.Cold-chain logistics industry in China started late and the gap is bigger,compared with western developed countries,and cold chain logistics haven't formed a complete service system,distribution inefficiencies,cold-chain information management technology lags behind,which restrict the development of the whole cold chain logistics industry.This article,around the city distribution route optimization problem of cold-chain logistics,analyzes distribution costs of cold chain logistics,set up with the lowest total cost as the objective function,the mathematical model with the genetic algorithm is analyzed,and used MATLAB programming,finally verified by an example to solve the optimal distribution route combinations.In this paper,the main works were done as follows:(1)This paper studies the development of cold chain logistics and vehicle routing problem(VRPTW),summarizes research methods and research achievements of the domain;(2)The paper established the mathematical model of VRPTW for the city perishable food,and discuss the theory of Genetic Algorithm;(3)To solve the model by genetic algorithm,by an example of SH corporation to verify this model,the results show that genetic algorithm has good quality,proves the feasibility and effectiveness of this article.The paper studied the VRPTW of cold chain logistics for the city perishable food according to this routes:raise a question,theoretical research,establishment of model and algorithm,case study,and the research results of which prove the theoretical value and Practical value. |
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