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This volume presents the results of research work performed within ESPRIT Project 322 "CAD Interfaces (CAD I)". It describes the concept for a methodology and guidelines to extend geometric modelling systems by modelling functions for the design of technical products. These functions are based on providing more semantics and design operations. A two-level concept for extending geometric modelling functions is presented: geometric associative functions and technical functions reflecting technical terms and technical form features are defined. For the implementation of an advanced modelling system, a specification for procedural interfaces and the description of a user interface are given as typical examples.
Dieser ESPRIT-Bericht beschreibt ein Konzept zur Erweiterung von Funktionen der Geometrischen Modellierung auf technische Anwendungen. Es wird ein Stufenkonzept vorgestellt, das aufbauend auf geometrischen Funktionen zunächst geometrisch-assoziative und sodann technische Funktionen spezifiziert.
List of contents
CAD*I Project Overview.- 1. Introduction.- 2. Methodology of Design.- 2.1 General Problem Solving Principles.- 2.2 Derivation of the Model Space of Design.- 3. Overview of the Concept for Advanced Modelling.- 3.1 The Integrated Product Model.- 3.2 Modelling Levels.- 3.3 General Principles of Associative Modelling.- 4. Geometric-Associative Modelling.- 4.1 Subject of Specification.- 4.2 Geometric-Associative Modelling Approaches.- 4.3 System Specification of the "Handsketch" Input System (HIS).- 5. Technical-Associative Modelling.- 5.1 State of the Art.- 5.2 The DTT-Modeller (Design by Technical Terms).- 5.3 Command Language for Design.- 6. Design by Features.- 7. Internal Interfaces.- 7.1 The Model Manipulation Interface.- References.
About the author
Prof. Hans Grabowski leitet das Institut für Rechneranwendung in Planung und Konstruktion (RPK) der Universität Karlsruhe (TH)
