自由曲面对象族研究

传统的边界表示方式导致自由曲面特征仅包含几何信息,很显然这种表达方式是很低效的。为此提出了一种有效描述自由曲面特征的新方法,该方法基于陈述式的对象族模型构建自由曲面对象族,使自由曲面具有高层次的语义信息,可以保证自由曲面特征无缝地融合到模型中去,同时满足自由曲面特征与其他特征间的约束关系。通过约束定义自由曲面特征具有的语义信息,在建模过程中功能属性被很好地维护,实现了对自由曲面特征在参数化层次上的描述,并证明了其可行性。

Research on family of blend object

The blend features contained only geometric information on conventional Breps is inefficient. This paper proposed a new method to describe blend features, which built family of blend object based on declarative family of object model. The blend features, based on high-level semantic information, could be added to a model containing relations between all features in the model. It defined constraints to specify important semantic information, and maintained the semantic information during the whole modeling process. Experiments implement describing blend features at a parameterized level and demonstrate its feasibility.