Ontology Expression of MBD Model and Research on Model Retrieval Technology

Abstract

An MBD model knowledge representation and management method is proposed to meet the reuse requirement of MBD history models data designed in the product full three dimensional digitalization development, and a new model retrieval algorithm is verified considering geometry and non-geometry information. Firstly, we construct ontology structure based on the normative framework of MBD dataset and the purpose of model retrieval, divide it into geometry feature layer and engineering note layer in detail. Secondly, the similarity comparison method of two layers was given based on the ontology structure. Finally, MBD model retrieval is completed based on geometry and non-geometry information. The proposed method uses the ontology theory as its basis, achieving structural and semantic expression and storage of MBD dataset, thus is capable of achieving the reuse of MBD model information by similar model retrieval based on both geometry and non-geometry information.