A consistency maintenance method of product geometric and technical information using knowledge-enriched attributed adjacency graph

Aiming to solve the consistency maintenance problem of product information in Model based Definition (MBD) model design change process, a knowledge-enriched attributed adjacency graph (K-AAG) based consistency maintenance method of product geometry and technical information is proposed. Firstly, the product model consistency problem is decomposed into three types: geometric information consistency, geometric-technical information consistency, and technical information consistency; secondly, the structural and numerical relationship between information elements in product model are expressed by K-AAG, and the K-AAG is constructed by defining nodes and edges. Thirdly, the product information consistency maintenance process is proposed, and the MBD model change decision table is generated for the designers. Finally, a prototype system named PICMT was developed the validity of the proposed method is verified using a gearbox end cover MBD model as the example.