FEATURE-BASED DESIGN AND CONSISTENCY MANAGEMENT IN CAD APPLICATIONS - A UNIFIED APPROACH

This paper presents ongoing work dealing with design by features using the constraint satisfaction approach. Basic ideas related to the unified definition of features and constraints from an ontological point of view are clarified. Requirements for defining and administering constraints in feature-based models are presented and an architecture for consistency management in feature-based design is proposed. The two main modules of interest are the feature-based design module and the consistency management module. The first module is intended to support the design of product parts by creating and manipulating feature primitives that possess design semantics. The second module provides functionality for definition, evaluation and satisfaction of constraints in feature-based models.