关键词: 模具设计, 领域本体, 语义相似度, 基于案例的推理, 汽车覆盖件, 产品设计

Abstract: To solve the problems occurred in the automobile panel die design process included strong dependency of design experience,low tacit design knowledge reuse efficiency and low retrieve accuracy,according to the multi-source,heterogeneous and dynamic characteristics of die design case knowledge,the domain ontology model was created,and the logic relationship between ontology concepts was established.The hybrid method of semantic similarity and CBR mechanism named Semantic-CRB (S-CBR) included the node depth and node density was applied to fulfill the target of knowledge reuse and reduce the lead time based on double layer retrieve mechanism.The prototype system was built and an application was given to prove the validation of the proposed methodology.

Key words: die design, domain ontology, semantic similarity, case-based reasoning, automobile panel, product design