Multi-period Location-Routing Problem for Recycling Logistics Based on the Route Reliability

In order to reduce the cost of recycling and improve the reliability of the route in a multi-period environment, the multi-period location-routing problem of recycling logistics based on the reliability of the routes is studied. The location-routing optimization model of recycling logistics is established, which minimizes the total cost of recycling logistics with satisfying the vehicle routes' reliability constraints in each period. According to the characteristics of the problem, a symbiotic organisms search (SOS) algorithm using real coding method is designed to solve the problem. Finally, the performance of SOS algorithm is tested by solving examples of different sizes through simulation experiments. Experimental results show that SOS algorithm can effectively solve problems of different sizes and keep stable performance under different reliability levels.