Geometric Modelling for Product Realization: Selected and Expanded Papers from the IFIP TC5/WG5.2 Working Conference, Rensselaerville, NY, USA, 27 September-1 October 1992(v. B-8 IFIP Transactions B: Computer Applications in Technology S.)

State-of-the-art research and development in geometric and product modelling is reflected in this publication. The papers have been organized into five main topic areas - geometry, shape modelling, feature-based modelling, applications and data interfaces - though many contributions inevitably cross the artifical boundaries implied by such partitioning. The first group of papers deal with particular aspects of the problem of curve and surface representation under constraints. The second and largest section contains papers addressing the topic of describing the shape of a product. Advances achieved are acknowledged, including the development of work on representing imprecisely defined shapes, which signifies a movement from the detailed product design stage towards the more conceptual design application. The third section continues this theme with consideration of higher levels of design abstraction beyond the traditional shape models. Specific design and manufacturing applications are discussed in the fourth chapter. The final section provides an overview of the problems and solutions related to the transfer and manipulation of geometric and product data between and within CAX systems.

Table of Contents:
Part 1 Geometry: curves with monotone curvature from Bezier curves of specified arc length, J.A. Roulier; rational B-spline approximation of multiconic surfaces, D. Hoitsma and M. Lee; integrating bounding boxes, lines of support and shadowing for intersection detection in the plane, T.J. Peters and V. Toscano. Part 2 Shape modelling: case studies in the blending of solid shapes using irregular patch topology, M.J. Pratt and S.M. Whayeb; unary shape operations, J. Heisserman and R. Woodbury; geometric modelling for shape and topology optimization, A.V. Kumar and D.C. Gossard; probabilistic solid modelling - a new approach for handling uncertain shapes, Y. Yamaguchi et al; assembly modelling on the basis of a mechanical design prototype, J.K. Gui and M. Mantyla. Part 3 Feature based modelling: Erep - an editable, high-level representation for geometric design and analysis, C.M. Hoffmann and R. Juan; automatic mesh reconstruction for feature-based sculpting of deformable surfaces, K. Shimada et al; form feature recognition by spatial decomposition and composition, H. Sakurai and C.W. Chin; a systematic approach for design-manufacturing feature mapping, J.J. Shah et al. Part 4 Applications: a computer-aided broadcloth composite layout design system, M. Aono et al; non-isoparametric three axis NC tool path generation for finish machining of sculptured surfaces, S.X. Li and R.B. Jerard. Part 5 Data interfaces: a view of step, P.R. Wilson; a topology-based approach for shell-closure, J.H. Bohn and M.J. Wozny; a note on curve equality, P.R. Wilson.