Abstract: To solve the problem of not considering the selective disassembly in the current virtual
disassembly system based on the hierarchy model and relationship model, the skipping disassembly
path was introduced which developed and optimized the original hierarchy model and relationship
model. The sequence planning of the disassembly model after introducing the shipping disassembly
path was carried out. And the combination and reduction of disassembling units in the course of
disassembly decision was described. Finally, the selective disassembly algorithm was established
based on the relationship model. With the marine oil separator for example verification, the
verification results showed that the model could solve the problem of selective disassembly very well.
So this work has a certain reference value for the development of the related application system.

Key words: selective disassembly, skipping disassembly path, sequence planning, oil separator