供应中断下第三方物流安全性网络设计模型与算法

MODEL AND ALGORITHM SAFETY NETWORK DESIGN OF THIRD-PARTY LOGISTICS UNDER SUPPLY DISRUPTIONS

物流网络是第三方物流(3PL)运作的基础,对3PL的有效运作起到重要作用。事实上,3PL服务网络会受到各种因素的影响而发生供应中断。为了使3PL能够提供安全、有效的物流服务,研究3PL安全性网络设计问题。建立3PL安全性网络设计优化模型,在满足供应中断水平约束的条件下,最小化物流总成本。根据问题模型的NP-hard特点,设计差分进化(DE)算法进行求解。最后,通过仿真实验对模型和算法进行测试,仿真实验结果表明模型具有合理性,并且DE算法能够对问题有效求解。

As the operation basis of the third party logistics （3PL） , the logistics network plays an important role in the efficient operation of 3PL. In reality, supply disruption may happen in 3PL service network due to the influence of various factors. In order to offer secure and efficient logistics service, we study the design problem of 3PL safety network. Therefore, an optimization model of 3PL safety network design was established, which minimized the total logistics costs subjective to the constraints of supply disruption level. And according to the NP-hard characteristic of model, a differential evolution （ DE） algorithm was developed. Through simulation experiment, the proposed model and algorithm are reasonable and the DE can solve the problem effectively.