Research on product structural tree for product lifecycle

Based on analyzing the connotation of product structure model, the concept of the product lifecycle structural tree and the method of modeling is put forward, the nodes and their relationship of the product lifecycle structural subtree are analyzed, the methods of operation about the node and it\´s attribute are given. By using the extended IDEF5 schematic language, the six basic operations is described, including the "copy node", the "add node", the "delete node" operation and the "set attribute", the "add attribute", the "delete attribute" operation. Finally, the modeling process is illustrated from the product requirement structural subtree to the product full lifecycle structural tree by the instance