Specification of freeform features

Freeform feature modeling is an extension to feature mod-eling in which, in addition to regular-shaped features, also freeform features are possible. Due to the large variety of freeform features, a generic approach to specify such fea-tures is required. This paper describes such an approach. A freeform feature class is specied by using a prototype and constraints. The latter are used to dene intuitive parame-ters and validity conditions for the class. A new, prototype-driven constraint solving method is used to unambiguously determine a freeform feature during the specication both of a class and of an instance to be added to a model. The speci cation of freeform features and the prototype-driven constraint solving method are discussed. Several examples are given

Web-based collaborative feature modeling

Collaborative modeling systems are distributed multiple-user sys-tems that are both concurrent and synchronized, aimed at sup-porting engineering teams in coordinating their modeling activi-ties. Instead of an iterative process, asynchronously sending prod

Alex Noort Enforcing Model Validity by Automatic Adjustment

In current modeling systems, all dimensions in a mode

Persistent Naming Through Persistent Entities

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Systems

Most current modeling systems are feature modeling systems. Feature models are built from features and model constraints. Features exist at two levels of abstraction: generic feature classes, and specific feature instances. A feature class consists of a parameterize

and A Noort. Feature model visualization

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