Multi-objective Discrete Brainstorming Optimizer for Multiple-product Partial U-shaped Disassembly Line Balancing Problem

To promote the development of disassembly industrialization, reasonable disassembly line layout and disassembly process planning are essential. According to the concept of lean production, this paper presents a multiple-product partial U-shaped disassembly line balancing (MP-UDLB) problem. In this MP-UDLB problem, different types of end-of-life products are disassembled on the same U-shaped disassembly line at the same time. A mathematical model is constructed for the MP-UDLB problem to maximize the disassembly profit and minimize disassembly energy consumption simultaneously. A multi-objective discrete brainstorming optimizer (MDBO) is proposed to solve the MP-UDLB problem. The proposed MDBO is applied to real-world cases, i.e., a ballpoint pen and washing machine, and compared with other multi-objective algorithms. The experimental results show that the proposed MDBO outperforms peer algorithms.