中文摘要：

设计理性是对产品设计过程的解释和记录，是一类重要的设计知识，其内容和表示对于有效支持设计知识的检索和重用起着关键作用．针对设计知识检索和重用的需要，提出一种基于本体的扩展的设计理性表示模型．通过分析需要检索和重用的设计知识，给出以IBIS表示为基础，结合FBS模型、产品层次模型和产品需求的设计理性扩展表示；并据此构建设计理性本体以及相关的语义规则，以有效地支持基于语义的设计知识的检索和重用．实验结果表明，文中模型具有良好的表达能力和可用性．

英文摘要：

Design rationale is an explanation and record of product design process, being an important category of design knowledge. The content and representation of design rationale play a vital role in effectively achieving retrieval and reuse of design knowledge. According to the requirements of design knowledge retrieval and reuse, an extended design rationale representation based on ontology is proposed. By analyzing the design knowledge which needs to be retrieved and reused, an extended design rationale representation based on IBIS, combining with FBS model, artifact model and requirements is presented. A design rationale ontology and some semantic rules are constructed accordingly with the purpose of effectively supporting semantic-based retrieval and reuse of design knowledge. The experimental results show that the proposed model is expressive and feasible.