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Publication summary

Author(s): D. Dutta, A.D. Bhatt, Kevin Jurrens, Kevin Lyons, Mike Pratt and Ram Sriram

Publication date: November 2000

Citation: D. Dutta, A.D. Bhatt, Kevin Jurrens, Kevin Lyons, Mike Pratt and Ram Sriram: "Representation of Heterogeneous Objects in ISO 10303 (STEP)," Proceedings of the ASME Conference, Orlando, FL, November 5-11, 2000.

Key words: heterogeneous objects, layered manufacturing, material representation, rapid prototyping, solid freeform fabrication, solid modeling, STEP

Availability:

• Portable Document Format
• This document can be ordered from NTIS. The NTIS order number is G2000-2581.
• A paper copy of this document is available by contacting Kristy Thompson [web,email]

Abstract:

Solid modeling of objects forms an important task in design and manufacturing. Recent developments in the field of layered manufacturing have shown potential for the physical realization of heterogeneous (multi-material) objects. Thus, there is a need to represent material information as an integral part of the CAD model data. Information models for the representation of product data are being developed as an international standard called STEP (ISO 10303). However, the current application protocols focus on the representation of homogeneous objects only. This paper proposes an information model to represent heterogeneous objects using the information modeling methodology developed for ISO 10303. This will help in providing a uniform base in the development of heterogeneous solid modeling systems. It will also equip the solid modeler with the ability to integrate with other applications and process planning in the domain of layered manufacturing.

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