【摘要】 针对实际工程项目需求，分析了消失模铸造的特点，运用ＩＤＥＦ０方法建立了消失模设计活动模型，在此基础上，遵循面向对象方法，利用ＥＸＰＲＥＳＳ信息建模语言建立了基于特征的消失模参数化设计系统的信息模型，并阐述了其系统框架及关键技术。更多还原

【Abstract】 This paper aims at solving the problems in actual project. At first, the characteristics of lost foam casting are analyzed while the activity model of the lost foam design is established applying IDEF0 method.Then by using the EXPRESS information modeling language, the information model of the featurebased parametric design system of lost foam is established following the objectoriented paradigm.At last,the system frame as well as the relevant key technique are set forth.更多还原